Much like during the regular ultimate season, a lot of this is relying on people having good spirit and reporting in good faith. It would be extremely hard to verify that you’re not cheating and ain’t nobody got time for that. Be reasonable about how you do your rounding. If you feel justified in reporting a stat a certain way, then go ahead and do so. If you’re uncertain, feel free to contact me to verify/clarify. The punishment for playing with bad spirit is relentless heckling. Oh, and don’t be taking steroids or blood doping.
Each week you will be pitted against another player. There is no draft or substituting; you play for yourself and you play to win. Games run from Monday morning to Sunday evening. there will be a downtime on Sundays from 8 P.M. to midnight where I will be tallying scores and other maintenance. You can earn points during this time, even if your opponent hasn’t been determined yet, but it will be for the following week and you will have to wait until I activate the form again. You’ll be adding your movement counts/activity hours to a google form where the calculations will be done for you and displayed on a read only scoreboard spreadsheet.
It is HIGHLY suggested that you log your workouts daily instead of trying to do it all on Sunday. If you can’t remember how you scored on something, then you should forfeit those points instead of guessing.
We will be running with a normal league play for simplicity sake. Future iterations of this may include more sophisticated match ups.
There are no prizes or punishments for participating in this. I don’t feel like handling people’s money for this nor do I want to tempt people to cheat since this is such an honor based competition. I have no idea how I would enforce any punishments anyhow.
These should help you pad your score for some quick points. While you can create your own workout routine based on these movements, you will likely find that points can be earned faster through other means.
Distances can be calculated to the decimal point if you so desire. (i.e. If you run for 2.6 miles, you earn 2600 points.)
Discrete movements can be accumulated throughout the day. (i.e. every time you go to the bathroom, do 10 push ups (Also known as “piss ups”))
Chest to ground push ups. At the very least, your shirt (or chest hair) should make contact.
Handstand push ups may be done with a wall for balance or free standing if you have the balance for it. “Kipping” HPU/PUs are worth ⅓ the value, i.e.:
6 pull ups + 2 kipping pull ups = [6 + 3* ⅓]*50 = [6+.6]*50 = 6.6*50 = 350 points
Hip crease below knee crease
Treadmill is useful since it will tell you how far you ran. Otherwise, use a route tracking app or fitbit-like technology to track distance ran.
 You don’t get to count the steps you take walking around the office.
No bonuses awarded for inclined running, trail running or otherwise. Highly encouraged to do so anyway for bragging rights.
Cross-country skiing and other variations fall under this category as well. Downhill skiing does not.
Figure out the length of your pool and determine how far you swam based on laps.
Stationary bike counts. No bonuses are applied for using resistance. Track using a route tracking app to figure out distances if not using a stationary, don’t just estimate it. Commuting/transportation counts. You don’t have to keep tracking the route if you do the same route frequently (i.e. commuting to work from home or going to your favorite bar from your home). Use common sense and have good spirit with this one guys.
Use a rowing machine to track distance. I have no idea how to calculate in-water rowing. Don’t question why this one is using the metric system.
This is meant to encompass what cannot be discretely measured. No double counting; you can’t accumulate points from your movements and your activities simultaneously. (i.e. if you do a spin class, you can either get the points per hour of class, OR by distance biked, but not both.  You are likely to earn more points at the hourly rate than you are at the discrete counting rate. This is likely where you will earn the majority of your points.
Be reasonable and have good spirit here. Most training regimens are based on an hour long session. If you take 90 minutes because you’re gabbing with your lifting buddy, you should only count it as 1 hour. Alternatively, if you beast mode your way through the workout and complete it in 45 minutes, you can still count it as an hour. If the lifting regimen is supposed to take 90 minutes, then go ahead and enter it as 1.5 hours. Basically, count it based on your program’s suggested time. If you’re making it up yourself, be fair.
This is meant to encapsulate things that are high cardio exercises like circuit classes, crossfit, spin class, sprints, high intensity interval training, core exercises.
This is meant to encapsulate things that are low cardio exercises like weightlifting and yoga.
Some yoga classes are labeled along the lines of “Power Up” and are actually more like a high intensity circuit or fitness class. Feel free to count them as such instead. Use discretion wisely. Please ask me clarifying questions about this if you need to. I feel like it’s pretty self-explanatory but I may be wrong.
If you are playing a sport (indoor ultimate, goaltie, indoor soccer) or anything that doesn’t fit into the previously mentioned categories then you should count it by the hours played (to the quarter hour if possible).
The point value is low because you will likely spend much time on the sideline and this is also not “focused” exercise either; you gain more from 20 minutes of intense conditioning than an hour of play.
If it’s something that has a set time (like a soccer game) count it by how long the game was: two 45 minutes halves means you played for 90 minutes/1.5 hours.
If it’s something that plays until you finish, be reasonable and make your best guess for how long you played.
If you are bored on the sideline and feel like boosting your points, you are encouraged to do push ups. The double counting exclusion rule doesn’t apply here like it would in the other activity categories.
You can only complete the tabata challenge once per day. It is meant to be a good way to top off your exercise for the day since it only takes 4 minutes. There will be a set of approved Tabata challenges to choose from linked out from the form. There should be multiple to choose from since you probably don’t want to do the same challenge 7 days in a row and destroy one muscle group. I encourage you to submit challenges yourself if you would like to see them and I will incorporate them in future games. Tabata challenges consist of 8 rounds of 20 seconds on and 10 seconds recovery.
This is probably a new concept for many of you. I highly encourage you to google the tabata methodology for yourselves to learn the procedure, theory, and benefits. It is a form of HIIT (high intensity interval training) which helps with recovery (very useful in ultimate since we do lots of sprinting).  EPOC basically means your metabolism shoots through the roof because your muscles are still trying to gather oxygen hours after you have finished exercising.
You can only do this once per day generally, try to do this after your workout. You must stretch for at least 10 minutes to earn this bonus If yoga is part of your workout that day, then you can count this bonus for the day without spending an extra 10 minutes stretching just to earn the bonus.
Each week there will be a different challenge against your opponent. These will be explained each week. Examples: Most push ups, most miles ran, scored higher on tabata challenges. These will be added manually during the downtime period when I’m doing weekly maintenance. Sometimes these will require you to fill in data yourself (such as tabata challenge scores) and sometimes these will happen automatically based on other fields (such as push ups and miles ran).


UoN Scraps Parallel Programmes' Centre
by Eddy MwanzaThe University of Nairobi announced that it had shut down the self-sponsored programmes department.
In a statement issued on Monday, November 25, the university's council chair, Julia Ojiambo, explained that move to do away with the Centre for Self Sponsored Programmes (CESSP) centre was to take effect immediately.
"That statute which establishes the Center for Self-Sponsored Programmes is revoked with immediate effect," the statement read in part.
In line with the new directive, the university chair recommended that members of staff previously serving under various CESSP programs be re-assigned into the mainstream services of the university.
The move came with a backdrop of the lowering of cut-off points for university government sponsorship to a minimum of C+ reducing the number of students enrolling for a self-sponsored study.
Speaking to Kenyans.co.ke, a Master's student at the university who declined to be named, clarified that the university administration had assured them that the decision would not affect programmes offered by the institution.
The highly-ranked university made headlines on October 31, 2019, after Embakasi East Member of Parliament Paul Ongili, popularly known as Babu Owino called a truce with the acting Vice-Chancellor Professor Isaac Mbeche.
According to Babu's Facebook post, his brief talks with the VC yielded fruits after Mbeche agreed to take back students who had been suspended or expelled from the institution.
"All comrades who were suspended/expelled from the University of Nairobi to write a letter addressed to the Vice-Chancellor requesting to proceed with their studies," he posted.


Miami is part of a vast metropolitan area. Without many breaks, the city stretches nearly 100 miles up the coast of Florida. The cities of Fort Lauderdale, Boca Raton, and West Palm Beach are part of this cityscape. There are few areas in the entire world with as many maritime services as Miami or Fort Lauderdale. If it cannot be done here, it very likely cannot be done at all.
The Atlantic Intracoastal Waterway (ICW) begins approximately at Miami. The ICW is a clearly-defined system of canals and inland rivers that parallel the coast. In other words, you can motor up the entire Atlantic coast of Florida without ever going to sea outside the barrier islands. Nearly every significant marina in Florida will be located within a short distance from the ICW.
Miami is a popular landing point for yachts arriving from foreign ports; however, due to the fact that the Miami Seaport is incredibly busy at almost all hours, arriving yachtsmen may want to opt for a more quiet Port of Entry. Be aware that yachts arriving from abroad must make contact with the US Customs and Border Protection office immediately upon landing and may not disembark before receiving instructions from the CBP.
This is a Port of Entry.
Last updated November 2014.


Illustrations
I come from a fine art background, painting and drawing alot. After finishing sixth form college I completed a foundation degree at the Chelsea School of Art and Design, specialising in visual communication. During this time the main focus was producing a portfolio that focused on my ability to create visual solutions to visual problems using illustration and typography. For our final self initiated project, I made a website and havent stop since.
-
Related work
See what else I've done >>
-
Six Ways to Make People Like You


snippage
`Prev `__
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`Next `__
--------------
**snippage**: n.
Synonym for `*deletia* <../D/deletia.html>`__; the fact that something
has been snipped when quoting is often indicated with the pseudo-HTML
.
--------------
+--------------------------+----------------------------+-----------------------+
| `Prev `__ | `Up <../S.html>`__ | `Next `__ |
+--------------------------+----------------------------+-----------------------+
| sniff | `Home <../index.html>`__ | SO |
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Parent Control Configuration
Type in the website you want to block, you can also block any device in your home from get internet access, you only need to type in the device's ip address
Type in the website you want to block, you can also block any device in your home from get internet access, you only need to type in the device's ip address


Edit with Friends
Tweet
Firepad is an open source collaborative text editor you can add to
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own website.
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A node.js, jQuery, and MySQL web application that allows nurses and facility supervisors to easily manage the lifecycle of wheelchair cushions based on their respective use cases.
A Javascript, node.js, and MySQL application that stores customer orders and allows hungry users to "devour" their burger.
A Javascript application that matches users with a new best friend based on their survey responses.
A Super Smash Brothers themed hangman game using Javascript, jQuery, and Twitter-Bootstrap.
A time based Javascript trivia game featuring questions about North Carolina's history.


Building a Release
In the discussion below, we use $VERSION to represent the release version in
question (e.g., 110.82), $ARCH to represent the host
architecture (e.g., x86), and $OS to represent the host
operating system (e.g., unix).
The main steps in building a release are as follows:
-
Create the directory to contain the release. E.g. in a working copy
of the pages project, svn add directory dist/working/$VERSION, where n is
the release number. Then commit the change, and update the web-site
copy of the pages project at /stages/web_static/smlnj/htdocs.
-
Write the $VERSION-README.html file and commit it.
Also update the HISTORY file.
-
Run the allcross script in base/system to build boot directories for
all the architectures and create tarballs from them.
Copy these tarballs to the dist/working/$VERSION directory created in the first step.
-
Export source directories and create tarballs and transfer them to
the distribution directory.
-
Create .dmg file for Mac OS X installation, and a Windows .zip file.
(Details?). Add these to the distribution directory.
-
Add a link to dist/working/$VERSION/$VERSION-README.html to
dist/index.html.
Following are specific instructions for building a SML/NJ release,
organized by operating system (Unix/Linux, macOS, Windows).
Building on Unix (including Linux)
Note: the script admin/prepare-release.sh will do steps 1–10.
-
Update current copy, or check out a fresh copy:
-
Compile to fixed point:
- $ cd base/system
- $ ./fixpt
This script will produce two directories: sml.boot.$ARCH-$OS
and sml.bin.$ARCH-$OS.
Note: prior to 110.79, the fixpt script left the result in directories
that were indexed by iteration (e.g., sml2.bin.x86-unix).
Use the "-save" option to the fixpt command to force the old
behavior.
-
Generate new library and heap files.
-
Test the build.
-
Install the new code (the "-clean flag removes the old libraies and heap images).
- $ ./installml -clean
- (To check everything — make sure everything is enabled in config/targets.)
-
Build a working installation.
- $ cd ../..
- $ ./config/install.sh
-
Update the version and releasedate files in the config directory.
- $ cd config
- $ echo $VERSION > version
- $ echo $DATE > releasedate
- $ svn commit -m "updating version number to $VERSION"
- $ cd ..
-
Build to another fixed point in base/system.
- $ cd base/system
- $ ./fixpt
-
Repeat steps 3 through 6 above.
- Can omit step involving testml. (Which seems broken in my notes anyway.)
-
Cross compile and generate tarballs for the bin files:
- $ cd base/system
- $ ./allcross
The allcross script will cross compile for all targets and produce gzipped tar files
(e.g., boot.x86-uniz.tgz).
-
Edit/update the history file.
-
../doc/src/changelog/HISTORY.txt: Add a new version section header.
-
../doc/src/releasenotes/: Copy previous version's README and edit; older
versions give examples of format expectations.
- Cut and paste relevant entries from HISTORY.txt and format them.
-
Also check the SML/NJ Library's change log (smlnj-lib/CHANGES), since
those changes often do not make it into the HISTORY file.
Note that since version 110.86, the README file is in
AsciiDoc format. The HTML file
will be generated by the build-tar-files.sh
command below.
-
Tag the release.
-
$ ./admin/make-release.sh $VERSION
Note that each major directory under smlnj has its own trunk and
release branches, e.g., $smlnj/sml/trunk,
$smlnj/sml/releases/release-$VERSION, except for ml-lpt,
which does not have release branches.
-
Update web pages.
-
Go to the relevant SML/NJ web server directory.
-
On the UChicago CS cluster at: /stage/web_static/smlnj/htdocs/dist/working.
Ideally this all under Subversion control, but this convention isn't being
followed 100%.
- Add a directory for $VERSION in dist/working.
- Create $VERSION/index.html by copying the file from the previous
release and then updating it with the correct links.
-
Define an alias for the distribution directory.
$ release_dir=linux.cs.uchicago.edu:/stage/web_static/smlnj/htdocs/dist/working/$VERSION
-
Create source tarballs:
- $ mkdir tmp
- $ cd tmp
- $ svn export https://smlnj-gforge.cs.uchicago.edu/svn/smlnj/admin
- $ ./admin/build-tar-files.sh
-
Copy documentation into the release directory.
- $ scp doc/doc/html/install-notes/cygwin.html $release_dir
- $ scp doc/doc/html/install-notes/install.html $release_dir
- $ scp doc/doc/html/install-notes/macos.html $release_dir
- $ scp doc/doc/html/install-notes/windows.html $release_dir
- $ scp doc/doc/html/HISTORY.html $release_dir
- $ scp doc/doc/html/readme/$VERSION-README.html $release_dir
Note: an alternative approach is to copy these files into a working copy
of the web-pages svn repository, add and commit them, and then do an svn update
on linux.cs.uchicago.edu.
-
Copy source tarballs into the release directory.
- $ scp *.tgz $release_dir
- $ cd ..
- $ scp base/system/*.tgz $release_dir
Once the files have been copied, you should ssh into linux.cs.uchicago.edu
and check the file permissions, which should be "rw-rw-r--."
-
Create DMG files for Mac (See below).
-
Create MSI files for Windows (See below).
-
Sanity checks:
- Download, install, and run tests.
-
Update links:
- Symbolic link at /stage/web_static/smlnj/htdocs/dist/working/current
- Table at /stage/web_static/smlnj/htdocs/dist/working/index.html
- What's new and links in /stage/web_static/smlnj/htdocs/index.html
Building a OS X package and dmg
There is an automated script for building a signed installer for macOS (née Mac OS X).
First check out from svn:
$ svn co https://smlnj-gforge.cs.uchicago.edu/svn/smlnj/osx-dist
$ cd osx-dist
The command
$ ./build-pkg.sh $VERSION
will build the signed installer package file
smlnj-x86-$VERSION.pkg.
To build the AMD64 installer (smlnj-amd64-$VERSION.pkg), use the
-64 option when running build-pkg.sh.
This script assumes that the distribution files have already been uploaded
to the standard distribution site (Step 15 above) and that the targets file is
initialized correctly.
The signing of the package depends on the user having the correct developer
certificate. The script currently knows about John Reppy's cert, but the
script can be generalized by adding other user IDs.
Instructions for older versions of the installation process can be found
in the document osx-package-build.txt.
Once the installer is built, it needs to be copied to the release directory
(do not forget to check permissions once the file is copied!).
- $ scp smlnj-$ARCH-$VERSION.pkg $release_dir
where $ARCH is either x86 or amd64.
Building a Windows installer (MSI)
Steps preceded by [cygwin] are performed in the cygwin shell.
Steps preceded by [vc++] are performed in the Visual C++ command
prompt.
- Install cygwin (32-bit version)
- Install Visual Studio (or Visual Studio Community)
- [cygwin] create a directory to build a release. This directory path
must not contain a number or spaces.
(in my case: /home/jhr/Work/smlnj/release or c:\cygwin\home\jhr\Work\smlnj\release)
- [cygwin] in /home/jhr/Work/smlnj directory,
- $ mkdir gf
- $ export gf=https://smlnj-gforge.cs.uchicago.edu/svn
- $ export smlnj=$gf/smlnj
- $ export VERSION=xxx.yy
- $ export release_dir=linux.cs.uchicago.edu:/stage/web_static/smlnj/htdocs/dist/working/$VERSION
- [cygwin] Fetch and unbundle the config.tgz file.
- $ curl -O https://smlnj.org/dist/working/$VERSION/config.tgz
- $ tar -xzf config.tgz
- [cygwin] Prepare the files for building the Windows version.
- $ config/prepare-win-install.sh
- [vs] set SMLNJ_HOME=C:\cygwin\home\jhr\Work\smlnj\release
Define SMLNJ_HOME variable.
- [vs] chdir %SMLNJ_HOME%
- [vs] config\install.bat
- [vs] config\WinSetup\buildSetup.bat
The file smlnj.msi produced is the final installer for Windows.
This script uses the WiX Toolset
for building the installer.
- [cygwin] $ scp smlnj.msi $release_dir/smlnj-$VERSION.msi
Copy the MSI file to the distribution directory; we add a $VERSION
tag so that folks can keep multiple downloads distinct.
Remember to check the file permissions on the server after you copy the file.
Last modified: March 31, 2020


Class: Aws::SageMaker::Types::S3DataSource
| Relationships & Source Files | |
| Super Chains via Extension / Inclusion / Inheritance | |
|
Class Chain:
self,
Struct
|
|
|
Instance Chain:
self,
::Aws::Structure ,
Struct
|
|
| Inherits: |
Struct
|
| Defined in: | gems/aws-sdk-sagemaker/lib/aws-sdk-sagemaker/types.rb |
Overview
Describes the ::Aws::S3
data source.
Your input bucket must be in the same Amazon Web Services region as your training job.
Constant Summary
Instance Attribute Summary
-
#attribute_names ⇒ Array<String>
rw
A list of one or more attribute names to use that are found in a specified augmented manifest file.
-
#instance_group_names ⇒ Array<String>
rw
A list of names of instance groups that get data from the
::Aws::S3
data source. -
#s3_data_distribution_type ⇒ String
rw
If you want
::Aws::SageMaker
to replicate the entire dataset on each ML compute instance that is launched for model training, specifyFullyReplicated
. -
#s3_data_type ⇒ String
rw
If you choose
S3Prefix
,S3Uri
identifies a key name prefix. -
#s3_uri ⇒ String
rw
Depending on the value specified for the
S3DataType
, identifies either a key name prefix or a manifest.
Instance Method Summary
::Aws::Structure
- Included
| #to_hash | Alias for Aws::Structure#to_h. |
Instance Attribute Details
#attribute_names ⇒ Array
<String
> (rw)
A list of one or more attribute names to use that are found in a specified augmented manifest file.
# File 'gems/aws-sdk-sagemaker/lib/aws-sdk-sagemaker/types.rb', line 35539
class S3DataSource < Struct.new( :s3_data_type, :s3_uri, :s3_data_distribution_type, :attribute_names, :instance_group_names) SENSITIVE = [] include Aws::Structure end
#instance_group_names ⇒ Array
<String
> (rw)
A list of names of instance groups that get data from the ::Aws::S3
data
source.
# File 'gems/aws-sdk-sagemaker/lib/aws-sdk-sagemaker/types.rb', line 35539
class S3DataSource < Struct.new( :s3_data_type, :s3_uri, :s3_data_distribution_type, :attribute_names, :instance_group_names) SENSITIVE = [] include Aws::Structure end
#s3_data_distribution_type ⇒ String
(rw)
If you want ::Aws::SageMaker
to replicate the entire dataset on each ML
compute instance that is launched for model training, specify
FullyReplicated
.
If you want ::Aws::SageMaker
to replicate a subset of data on each ML
compute instance that is launched for model training, specify
ShardedByS3Key
. If there are n ML compute instances launched for
a training job, each instance gets approximately 1/n of the number
of ::Aws::S3
objects. In this case, model training on each machine uses
only the subset of training data.
Don't choose more ML compute instances for training than available
::Aws::S3
objects. If you do, some nodes won't get any data and you will
pay for nodes that aren't getting any training data. This applies
in both File and Pipe modes. Keep this in mind when developing
algorithms.
In distributed training, where you use multiple ML compute ::Aws::EC2
instances, you might choose ShardedByS3Key
. If the algorithm
requires copying training data to the ML storage volume (when
TrainingInputMode
is set to File
), this copies 1/n of the
number of objects.
# File 'gems/aws-sdk-sagemaker/lib/aws-sdk-sagemaker/types.rb', line 35539
class S3DataSource < Struct.new( :s3_data_type, :s3_uri, :s3_data_distribution_type, :attribute_names, :instance_group_names) SENSITIVE = [] include Aws::Structure end
#s3_data_type ⇒ String
(rw)
If you choose S3Prefix
, S3Uri
identifies a key name prefix.
::Aws::SageMaker
uses all objects that match the specified key name prefix
for model training.
If you choose ManifestFile
, S3Uri
identifies an object that is a
manifest file containing a list of object keys that you want
::Aws::SageMaker
to use for model training.
If you choose AugmentedManifestFile
, S3Uri identifies an object
that is an augmented manifest file in JSON lines format. This file
contains the data you want to use for model training.
AugmentedManifestFile
can only be used if the Channel's input
mode is Pipe
.
# File 'gems/aws-sdk-sagemaker/lib/aws-sdk-sagemaker/types.rb', line 35539
class S3DataSource < Struct.new( :s3_data_type, :s3_uri, :s3_data_distribution_type, :attribute_names, :instance_group_names) SENSITIVE = [] include Aws::Structure end
#s3_uri ⇒ String
(rw)
Depending on the value specified for the S3DataType
, identifies
either a key name prefix or a manifest. For example:
A key name prefix might look like this:
s3://bucketname/exampleprefix
A manifest might look like this:
s3://bucketname/example.manifest
A manifest is an S3 object which is a JSON file consisting of an
array of elements. The first element is a prefix which is followed
by one or more suffixes. SageMaker appends the suffix elements to
the prefix to get a full set of S3Uri
. Note that the prefix must
be a valid non-empty S3Uri
that precludes users from specifying
a manifest whose individual S3Uri
is sourced from different S3
buckets.
The following code example shows a valid manifest format:
[ \{"prefix": "s3://customer_bucket/some/prefix/"\},
"relative/path/to/custdata-1",
"relative/path/custdata-2",
...
"relative/path/custdata-N"
]
This JSON is equivalent to the following S3Uri
list:
s3://customer_bucket/some/prefix/relative/path/to/custdata-1
s3://customer_bucket/some/prefix/relative/path/custdata-2
...
s3://customer_bucket/some/prefix/relative/path/custdata-N
The complete set of S3Uri
in this manifest is the input data for
the channel for this data source. The object that each S3Uri
points to must be readable by the IAM role that SageMaker uses to
perform tasks on your behalf.

# File 'gems/aws-sdk-sagemaker/lib/aws-sdk-sagemaker/types.rb', line 35539
class S3DataSource < Struct.new( :s3_data_type, :s3_uri, :s3_data_distribution_type, :attribute_names, :instance_group_names) SENSITIVE = [] include Aws::Structure end


@import models.client._ @(newMailForm: Form[web.client.ClientActions.NewEmail])(text:String) @clientmain("Affiliate Program"){
With our affiliate program, you become partner. Earn $10 for every successful referral. Your friend also gets a 16% discount when he/she places his/her first order.
@if(models.client.Client.getClient(session.get("email")).referralCode==null){Request a coupon code}else{Your coupon code is @models.client.Client.getClient(session.get("email")).referralCode.code}
There are two ways of inviting your friends to try out our service.
The first is by sending them an invitation email. We will send them the email with your a unique coupon code .
The second is by giving them your unique coupon code. If they use it while placing an order, you earn $10 and they get a 16% on their first order.
Note that you qualify for this benefits if your referals place an order worthy $60 or more.
You can use your earnings to place new orders or withdraw your cash when your total reaches $200


|
| | RigidBody (const SpatialInertia< double > &M_BBo_B) |
| | Constructs a RigidBody with the given default SpatialInertia. More...
|
| |
| | RigidBody (const std::string &body_name, const SpatialInertia< double > &M_BBo_B) |
| | Constructs a RigidBody named body_name with the given default SpatialInertia. More...
|
| |
| | RigidBody (const std::string &body_name, ModelInstanceIndex model_instance, const SpatialInertia< double > &M_BBo_B) |
| | Constructs a RigidBody named body_name with the given default SpatialInertia. More...
|
| |
| int | get_num_flexible_positions () const final |
| | There are no flexible degrees of freedom associated with a rigid body and therefore this method returns zero. More...
|
| |
| int | get_num_flexible_velocities () const final |
| | There are no flexible degrees of freedom associated with a rigid body and therefore this method returns zero. More...
|
| |
| double | default_mass () const |
| | Returns the default value of this body's mass. More...
|
| |
| const Vector3< double > & | default_com () const |
| | Returns the default value of this rigid body's center of mass as measured and expressed in this body's frame. More...
|
| |
| const UnitInertia< double > & | default_unit_inertia () const |
| | Returns the default value of this body B's unit inertia about Bo (body B's origin), expressed in B (this body's frame). More...
|
| |
| RotationalInertia< double > | default_rotational_inertia () const |
| | Gets the default value of this body B's rotational inertia about Bo (B's origin), expressed in B (this body's frame). More...
|
| |
| const SpatialInertia< double > & | default_spatial_inertia () const |
| | Gets the default value of this body B's spatial inertia about Bo (B's origin) and expressed in B (this body's frame). More...
|
| |
| T | get_mass (const MultibodyTreeContext< T > &) const final |
| | Returns the mass of this body stored in context . More...
|
| |
| const Vector3< T > | CalcCenterOfMassInBodyFrame (const MultibodyTreeContext< T > &) const final |
| | Computes the center of mass p_BoBcm_B (or p_Bcm for short) of this body measured from this body's frame origin Bo and expressed in the body frame B. More...
|
| |
| SpatialInertia< T > | CalcSpatialInertiaInBodyFrame (const MultibodyTreeContext< T > &) const override |
| | Computes the SpatialInertia I_BBo_B of this body about its frame origin Bo (not necessarily its center of mass) and expressed in its body frame B . More...
|
| |
|
| | RigidBody (const RigidBody &)=delete |
| |
| RigidBody & | operator= (const RigidBody &)=delete |
| |
| | RigidBody (RigidBody &&)=delete |
| |
| RigidBody & | operator= (RigidBody &&)=delete |
| |
|
The input PositionKinematicsCache to these methods must be in sync with context.
These method's APIs will be deprecated when caching arrives.
|
| const Isometry3< T > & | get_pose_in_world (const PositionKinematicsCache< T > &pc) const |
| | Extract this body's pose in world (from the position kinematics). More...
|
| |
| const Matrix3< T > | get_body_orientation_in_world (const PositionKinematicsCache< T > &pc) const |
| | Extract the rotation matrix relating the world frame to this body's frame. More...
|
| |
| const Vector3< T > | get_origin_position_in_world (const PositionKinematicsCache< T > &pc) const |
| | Extract the position vector from world origin to this body's origin, expressed in world. More...
|
| |
|
The input VelocityKinematicsCache to these methods must be in sync with context.
These method's APIs will be deprecated when caching arrives.
|
| const SpatialVelocity< T > & | get_spatial_velocity_in_world (const VelocityKinematicsCache< T > &vc) const |
| | Extract this body spatial velocity in world, expressed in world. More...
|
| |
| const Vector3< T > & | get_angular_velocity_in_world (const VelocityKinematicsCache< T > &vc) const |
| | Extract this body angular velocity in world, expressed in world. More...
|
| |
| const Vector3< T > & | get_origin_velocity_in_world (const VelocityKinematicsCache< T > &vc) const |
| | Extract the velocity of this body's origin in world, expressed in world. More...
|
| |
|
The input AccelerationKinematicsCache to these methods must be in sync with context.
These method APIs will be deprecated when caching arrives.
|
| const SpatialAcceleration< T > & | get_spatial_acceleration_in_world (const AccelerationKinematicsCache< T > &ac) const |
| | Extract this body spatial acceleration in world, expressed in world. More...
|
| |
| const Vector3< T > & | get_angular_acceleration_in_world (const AccelerationKinematicsCache< T > &ac) const |
| | Extract this body's angular acceleration in world, expressed in world. More...
|
| |
| const Vector3< T > & | get_origin_acceleration_in_world (const AccelerationKinematicsCache< T > &ac) const |
| | Extract acceleration of this body's origin in world, expressed in world. More...
|
| |
| Public Member Functions inherited from Body< T > |
| | Body (const std::string &name, ModelInstanceIndex model_instance, double default_mass) |
| | Creates a Body named name in model instance model_instance with a given default_mass and a BodyFrame associated with it. More...
|
| |
| const std::string & | name () const |
| | Gets the name associated with this body. More...
|
| |
| const BodyFrame< T > & | body_frame () const |
| | Returns a const reference to the associated BodyFrame. More...
|
| |
| BodyNodeIndex | node_index () const |
| | Returns the index of the node in the underlying tree structure of the parent MultibodyTree to which this body belongs. More...
|
| |
| double | get_default_mass () const |
| | Returns the default mass (not Context dependent) for this body. More...
|
| |
| const Isometry3< T > & | EvalPoseInWorld (const systems::Context< T > &context) const |
| | Returns the pose X_WB of this body B in the world frame W as a function of the state of the model stored in context . More...
|
| |
| const SpatialVelocity< T > & | EvalSpatialVelocityInWorld (const systems::Context< T > &context) const |
| | Returns the spatial velocity V_WB of this body B in the world frame W as a function of the state of the model stored in context . More...
|
| |
| void | AddInForceInWorld (const systems::Context< T > &context, const SpatialForce< T > &F_Bo_W, MultibodyForces< T > *forces) const |
| | Adds the spatial force on this body B, applied at body B's origin Bo and expressed in the world frame W into forces . More...
|
| |
| void | AddInForce (const systems::Context< T > &context, const Vector3< T > &p_BP_E, const SpatialForce< T > &F_Bp_E, const Frame< T > &frame_E, MultibodyForces< T > *forces) const |
| | Adds the spatial force on this body B, applied at point P and expressed in a frame E into forces . More...
|
| |
| template<typename ToScalar > |
| std::unique_ptr< Body< ToScalar > > | CloneToScalar (const MultibodyTree< ToScalar > &tree_clone) const |
| | NVI (Non-Virtual Interface) to DoCloneToScalar() templated on the scalar type of the new clone to be created. More...
|
| |
| | Body (const Body &)=delete |
| |
| Body & | operator= (const Body &)=delete |
| |
| | Body (Body &&)=delete |
| |
| Body & | operator= (Body &&)=delete |
| |
template<typename T>
class drake::multibody::RigidBody< T >
The term rigid body implies that the deformations of the body under consideration are so small that they have no significant effect on the overall motions of the body and therefore deformations can be neglected.
If deformations are neglected, the distance between any two points on the rigid body remains constant at all times. This invariance of the distance between two arbitrary points is often taken as the definition of a rigid body in classical treatments of multibody mechanics [Goldstein 2001]. It can be demonstrated that the unconstrained three-dimensional motions of a rigid body can be described by six coordinates and thus it is often said that a free body in space has six degrees of freedom. These degrees of freedom obey the Newton-Euler equations of motion. However, within a MultibodyTree, a RigidBody is not free in space; instead, it is assigned a limited number of degrees of freedom (0-6) with respect to its parent body in the multibody tree by its Mobilizer (also called a "tree joint" or "inboard joint"). Additional constraints on permissible motion can be added using Constraint objects to remove more degrees of freedom.
- [Goldstein 2001] H Goldstein, CP Poole, JL Safko, Classical Mechanics (3rd Edition), Addison-Wesley, 2001.
- Template Parameters
-
| T | The scalar type. Must be a valid Eigen scalar. |
Instantiated templates for the following kinds of T's are provided:
They are already available to link against in the containing library. No other values for T are currently supported.


In this article I describe the steps I use to regain control of big ball of mud Ruby on Rails applications. The objective is defining the application operational boundaries by iteratively transition its procedural code to modular using a Gem based dependency structure.
I will guide you trough a preparation to make sure this technique is what you need and highlight the challenges ahead, after that there is a critical section to understand what the application does, then we move on the technical part where I explain how to identify and iteratively transition code in to a library encapsulating its operational contexts and the last section is about drawbacks and what else can be done.
In this article I will use a simplified example adapted from a combination of real life projects I worked on. Some of the practices I describe assume a colocated team and product owner but could be adapted to distributed teams.
This is an advanced article that assume you’re familiar with component based architecture, and know how to create and work with Ruby gems and Rails engines. I recommend reading a component based Rails architecture primer or visit CBRA for an introduction.
Preparation
Right now your team is struggling to deliver business value because adding any new functionality to the code is a daunting experience. You have several god objects–models,services,controllers–causing cognitive overload by tangling responsibilities that belong to different application operational contexts.
This article doesn’t document the challenges of reengineering application context built with a heavily customized Rails plugins foundation. The Rails plugins functionality usually pollute the global namespace and foster the creation or expansion of god objects forcing the components to depend on the main application functionality and reducing the effectiveness of a dependency structure.
If you follow this article you will re-engineer your application to have a directory structure stating its operational contexts and defining a dependency structure allowing developers to add functionality to a dedicated section of the code confident it’ll only affect that component. Local Ruby Gems and Rails engines are the technical tool to create those components.
Eventually the Rails application will have no functionality and just load the Engine high level entry points.
Before you start
Re-engineering software will feel like bringing up walls in a sea of mud–only a very diligent development team can prevent the mud from getting in. Make sure all the developers express their opinion on this and they are ok to try it for a period of time or in a certain application context. Do not start this if the team is against it–instead ask them to formulate a different plan to let the application deliver business value again.
Select a few measurable results to monitor progress ie. feature delivered, bug reports, team mood, code metrics. Collect this every week and display it on your whiteboard. Do your best job but don’t be afraid to call the codebase not salvageable if you don’t see measurable progress.
No naming no blaming but incrementally improving
The application is in the state it is today for different reasons. Some of the initial team might not be around anymore some might be and their feelings on the application are probably mixed. Everyone has surely made mistakes and learned lessons on the project–make sure there is no blaming or naming individuals over code quality or the current state of the project. Remember Kerth’s prime directive:
Regardless of what we discover, we understand and truly believe that everyone did the best job they could, given what they knew at the time, their skills and abilities, the resources available, and the situation at hand.
Also remember this popular quote:
Errare humanum est, sed in errare perseverare diabolicum
which translates to To err is human, but to persist in error is diabolical.
Understand what the application does
Let’s start by stating the obvious: you can’t re-engineer an application without understanding what it does and gather the contexts it operates on–your product owner or stakeholders should be able to help with that. If there is no product owner or if the product owner doesn’t know perhaps the maintenance team knows.
The absence of a dedicated product owner transforms reengineering in merely technical task that will only deliver technical results and not necessarily business value.
Start by getting a 5 minutes summary of what the application does from a tech lead or product owner and then schedule a timeboxed session to sketch the application high level moving parts and contexts on a whiteboard in front of the whole development team–everybody regardless of their title or experience should be allowed to pitch in.
Applications usually operate in a few different contexts and looking at them everyday on a whiteboard can help developers organize code that way.
The example application for this article is a car sharing service. A registered member can go on the website or app and book a car (booking). The member uses a key fob to open the car, the car fob reader contacts the API to notify the system about ongoing trips and when the car was picked up/dropped off (trip). The car sharing company run monthly payments based on member car usages (payment).
Identify and set application boundaries
Retrofitting components in an existing Rails application requires a different strategy then when introducing them incrementally in a brand new application.
Your product owner must decide which functionality is the most valuable and that’s usually the one you should start re engineering on. If you’re not feeling confident just pick a less critical functionality.
Now gather this functionality entrypoints meaning Rails routes and controllers. In our example that could be the reservation booking and payments APIs or the trip API used to track car returns.
A single controller handling multiple business workflows is an anomaly that will complicate the creation of clear boundaries. A ReservationController should not handle a reservation booking and a reservation payment so you have two options:
- refactor to separate the logic in two controllers
ReservationBookingController
andReservationPaymentController
- duplicate the entrypoint controller code
You can do a combination of the two if you have shared private controller methods like:
class ReservationController < ApplicationController
def book
# booking code
# private_method_call
# using instance variable
# more booking code
end
def pay
# payment code
# private_method_call
# using instance variable
# more payment code
end
end
inside the BookingApi
engine:
module BookingApi
class ReservationController < ApplicationController
def create
# booking code
# private_method_call
# using instance variable
# more booking code
end
end
end
and inside the PaymentApi
engine:
module PaymentApi
class ReservationController < ApplicationController
def create
# payment code
# private_method_call
# using instance variable
# more payment code
end
end
end
I am not an advocate of duplication but if refactoring is an endeavour that exceed the allocated time I consider duplication a valid temporary option–be sure to leave a contextual commit message in version control to describe the reasoning behind your strategy.
Rotting routes
Sometime the thousand line long routes.rb
has unused entries indicating unused code. Monitor the production logs to ensure which entry points are used and flag the rest for deprecation and removal. If it was indeed used version control will allow you to roll back.
Integration tests are critical
The behaviour that’s moving from the main application in to a entry point component must be exercised by acceptance tests or you risk to spawn bugs hard to detect.
When the application has a complete lack of automated tests introduce just enough to be comfortable about the workflow you are moving.
If the project has a high defect rates and low deliverables and your organization is completely ignoring TDD you need to first introduce that and some agile methodologies or any reengineering effort will be futile.
When a component is introduced incrementally in an application with a dependency structure those integration test would live within the component to exercise it in isolation. Big ball of mud applications have a tangle of dependencies be pretty hard to fix in one step so it’s ok to leave the component integration tests in the main application and initially just move route or controller tests.
Creating a Ruby gem or Rails engine is not the focus of this article–I explained that in a component based Rails architecture primer.
At this stage your new components payment_api
and booking_api
implements the entry points of the payment and booking context. Some entrypoint–the trip API in our example–remain in the main application which is fine. The objective is to restructure in small steps focusing on what the product owner wants delivered and it’s ok to leave some never changing code in the main application.
Move related classes in the components
Once all the entry points of a context live in high level entry point component you can start focusing on moving code only used there–these could be service objects, presenters, ActiveRecord models. Remember not to follow the application directories named as architectural patterns antipattern.
If you encounter classes used in more then one context timebox a refactoring and fallback to duplicate the code. Using duplication everywhere is not sustainable–if that’s what’s happening increase the refactoring time or involve the whole team on a retrospective on why refactoring never yield results. Make sure this task has the most experienced developer anchoring the task and pairing to share the work done with the rest of the team.
Sometime a Rails engine component is sufficient to encapsulate all the logic of one context but more often I’ve seen part of its behaviour split in a separate Ruby Gem component. In this example the payment might need a fair amount of logic to recalculate the booking quote and that section of the payment could be moved to a separate component Gem quote_recalculator
only used by the payment_api
Engine component.
The advantage of that is an intention revealing dependency structure that reduce the cognitive load. The danger is to split in too fine grained components creating a dependency structure that is purely technical and doesn’t follow any business rule.
My guideline is to map business operational areas in to objects names and namespaces. When more then two or three concepts are living in a single namespace I ask the business owner if this is a different context. As a baseline use Conway’s law:
organizations which design systems … are constrained to produce designs which are copies of the communication structures of these organizations
What to do next
Once the code is in a recognizable state keeping it that way will require diligence.
When the main Rails application loads all the Engine and Gem components Ruby will not enforce their dependency structure.
In a Rails application a component can access any component breaking encapsulation. This is not a Rails problem but a limitation–or design choice–of Ruby that you should be very aware of.
Automated tests exercising the components in isolation is the only warning for a broken dependency structure.
Make sure when you’re onboarding new developers they know about the business context and the components responsibilities. I like to create a one sentence README in each component root directory explaining its responsibility and its intended boundary of operation.
As you gather more information from your product owner and better understand the domain those boundaries will inevitably shift and so will your Engine and Gems components names and responsibility.
Once you’re here a secondary objective can be to migrate certain contexts to a brand new technology in the so called strangler pattern.
Once you encapsulate portions of your Rails application in to a high level component you can deploy it in isolation, reducing the whole application memory footprint.
Conclusion
Re-engineering is hard work and inside a Ruby application there is a lot of freedom that makes automated refactoring harder then in compiled languages.
Applications using a lot of meta programming or conventional Rails plugins and practices might be impractical to re-engineer.
Don’t be fooled in to switching to a service oriented architecture for code organization. A modular monolithic application is better then an overengineered service oriented application.


This pages configures TagEnvy to simulate the behavior of this gist.
The body has the following attributes:


How it works
Blook is a book swapping platform. At Blook you can
join a community
where you can explore a vast range
of books. Blook allows you to pick
a book to
request or send to a fellow Blooker.
Established in 2019, we wanted to make countless
books accessible
through this online community
of users all of over the city.
Blook makes book swapping easy. Simply select
the profile of the
book. Here you can engage
in reviews, online forum or request
the book.
Alternatively enter the book you have to give away
and
we will notify you once it has been requested.


Bookmark Search
Extension - Searching Test
Try here:
Bookmark Search
Chrome built-in search
Please enter keyword to search in Bookmarks
Bookmark Search version 2
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{% comment %} ** We should really rename this HTML file (it's not really navigation) ** Display the previous, next section links {% endcomment %} {% if navigation %}


public enum LockMode extends java.lang.Enum<LockMode>
Locking Rules
Together with CursorConfig
, TransactionConfig
and EnvironmentConfig
settings, lock mode parameters determine how records are
locked during read operations. Record locking is used to enforce the
isolation modes that are configured. Record locking is summarized below for
read and write operations. For more information on isolation levels and
transactions, see Writing Transactional Applications.
With one exception, a record lock is always acquired when a record is
read or written, and a cursor will always hold the lock as long as it is
positioned on the record. The exception is when READ_UNCOMMITTED
is specified, which allows a record to be read without any locking.
Both read (shared) and write (exclusive) locks are used. Read locks are
normally acquired on read (get
method) operations and write locks on
write (put
method) operations. The only exception is that a write
lock will be acquired on a read operation if RMW
is specified.
Because read locks are shared, multiple accessors may read the same record. Because write locks are exclusive, if a record is written by one accessor it may not be read or written by another accessor. An accessor is either a transaction or a thread (for non-transactional operations).
Whether additional locking is performed and how locks are released depend on whether the operation is transactional and other configuration settings.
Transactional Locking
Transactional operations include all write operations for a transactional
database, and read operations when a non-null Transaction
parameter
is passed. When a null transaction parameter is passed for a write
operation for a transactional database, an auto-commit transaction is
automatically used.
With transactions, read and write locks are normally held until the end
of the transaction (commit or abort). Write locks are always held until the
end of the transaction. However, if READ_COMMITTED
is configured,
then read locks for cursor operations are only held during the operation and
while the cursor is positioned on the record. The read lock is released
when the cursor is moved to a different record or closed. When READ_COMMITTED
is used for a database (non-cursor) operation, the read
lock is released before the method returns.
When neither READ_UNCOMMITTED
nor READ_COMMITTED
is
specified, read and write locking as described above provide Repeatable Read
isolation, which is the default transactional isolation level. If
Serializable isolation is configured, additional "next key" locking is
performed to prevent "phantoms" -- records that are not visible at one point
in a transaction but that become visible at a later point after being
inserted by another transaction. Serializable isolation is configured via
TransactionConfig.setSerializableIsolation(boolean)
or EnvironmentConfig.setTxnSerializableIsolation(boolean)
.
Non-Transactional Locking
Non-transactional operations include all operations for a
non-transactional database (including a Deferred Write database), and read
operations for a transactional database when a null Transaction
parameter is passed.
For non-transactional operations, both read and write locks are only held while a cursor is positioned on the record, and are released when the cursor is moved to a different record or closed. For database (non-cursor) operations, the read or write lock is released before the method returns.
This behavior is similar to READ_COMMITTED
, except that both
read and write locks are released. Configuring READ_COMMITTED
for
a non-transactional database cursor has no effect.
Because the current thread is the accessor (locker) for non-transactional operations, a single thread may have multiple cursors open without locking conflicts. Two non-transactional cursors in the same thread may access the same record via write or read operations without conflicts, and the changes make by one cursor will be visible to the other cursor.
However, a non-transactional operation will conflict with a transactional
operation for the same record even when performed in the same thread. When
using a transaction in a particular thread for a particular database, to
avoid conflicts you should use that transaction for all access to that
database in that thread. In other words, to avoid conflicts always pass the
transaction parameter, not null, for all operations. If you don't wish to
hold the read lock for the duration of the transaction, specify READ_COMMITTED
.
Read Uncommitted (Dirty-Read)
When READ_UNCOMMITTED
is configured, no locking is performed
by a read operation. READ_UNCOMMITTED
does not apply to write
operations.
READ_UNCOMMITTED
is sometimes called dirty-read because records
are visible to the caller in their current state in the Btree at the time of
the read, even when that state is due to operations performed using a
transaction that has not yet committed. In addition, because no lock is
acquired by the dirty read operation, the record's state may change at any
time, even while a cursor used to do the dirty-read is still positioned on
the record.
To illustrate this, let's say a record is read with dirty-read
(READ_UNCOMMITTED
) by calling Cursor.getNext
with a cursor C, and changes to the record are also being made in another
thread using transaction T. When a locking (non-dirty-read) call to Cursor.getCurrent
is subsequently made to read the same
record again with C at the current position, a result may be returned that
is different than the result returned by the earlier call to getNext
. For example:
getNext
call, and T is committed, a subsequent call to getCurrent
will
return the data updated by T.getNext
call, the getNext
will returned the data updated by T. But if
call, the getNext
will return the data updated by T. But if
T is then aborted, a subsequent call to getCurrent
will return
the version of the data before it was updated by T.getNext
call, the getNext
call will return the inserted record.
But if T is aborted, a subsequent call to getCurrent
will return
OperationStatus.KEYEMPTY
.getNext
call, and T is committed, a subsequent call to getCurrent
will
return OperationStatus.KEYEMPTY
.Note that deleted records are handled specially in JE. Deleted records
remain in the Btree until after the deleting transaction is committed, and
they are removed from the Btree asynchronously (not immediately at commit
time). When using #READ_UNCOMMITTED
, any record encountered in the
Btree that was previously deleted, whether or not the deleting transaction
has been committed, will be ignored (skipped over) by the read operation.
Of course, if the deleting transaction is aborted, the record will no longer
be deleted. If the application is scanning records, for example, this means
that such records may be skipped by the scan. If this behavior is not
desirable, READ_UNCOMMITTED_ALL
may be used instead. This mode
ensures that records deleted by a transaction that is later aborted will not
be skipped by a read operation. This is accomplished in two different ways
depending on the type of database and whether the record's data is requested
by the operation.
By "record data" we mean both the data
parameter for a regular or
primary DB, and the pKey
parameter for a secondary DB. By "record
data requested" we mean that all or part of the DatabaseEntry
will
be returned by the read operation. Unless explicitly not
requested, the complete DatabaseEntry
is returned. See
Using Partial DatabaseEntry
Parameters for more information.
Because of this difference in behavior, although #READ_UNCOMMITTED
is fully non-blocking, #READ_UNCOMMITTED_ALL
is
not (under the conditions described). As a result, when using #READ_UNCOMMITTED_ALL
under these conditions, a LockConflictException
will be thrown when blocking results in a deadlock or
lock timeout.
To summarize, callers that use READ_UNCOMMITTED
or #READ_UNCOMMITTED_ALL
should be prepared for the following behaviors.
OperationStatus.KEYEMPTY
will be returned by the following
methods if they are called while C is still positioned on the deleted
record: Cursor.getCurrent
, Cursor.putCurrent
and Cursor.delete
.READ_UNCOMMITTED
, deleted records will be skipped
even when the deleting transaction is still open. No blocking will occur
and LockConflictException
is never thrown when using this
mode.#READ_UNCOMMITTED_ALL
, deleted records will not
be skipped even when the deleting transaction is open. If the DB is a
duplicates DB or the record's data is not requested, the deleted record
will be returned. If the DB is not a duplicates DB and the record's
data is requested, blocking will occur until the deleting transaction is
closed. In the latter case, LockConflictException
will be thrown
when this blocking results in a deadlock or a lock timeout.| Enum Constant and Description |
|---|
DEFAULT
Uses the default lock mode and is equivalent to passing
null for
the lock mode parameter. |
READ_COMMITTED
Read committed isolation provides for cursor stability but not
repeatable reads.
|
READ_UNCOMMITTED
Reads modified but not yet committed data.
|
READ_UNCOMMITTED_ALL
Reads modified but not yet committed data, ensuring that records are not
skipped due to transaction aborts.
|
RMW
Acquire write locks instead of read locks when doing the retrieval.
|
| Modifier and Type | Method and Description |
|---|---|
ReadOptions |
toReadOptions()
Returns a ReadOptions with this LockMode property, and default values
for all other properties.
|
java.lang.String |
toString() |
static LockMode |
valueOf(java.lang.String name)
Returns the enum constant of this type with the specified name.
|
static LockMode[] |
values()
Returns an array containing the constants of this enum type, in
the order they are declared.
|
public static final LockMode DEFAULT
null
for
the lock mode parameter.
The default lock mode is READ_UNCOMMITTED
when this lock
mode is configured via CursorConfig.setReadUncommitted(boolean)
or TransactionConfig.setReadUncommitted(boolean)
, or when using a DiskOrderedCursor
. The Read Uncommitted mode overrides any other
configuration settings.
Otherwise, the default lock mode is READ_COMMITTED
when this
lock mode is configured via CursorConfig.setReadCommitted(boolean)
or
TransactionConfig.setReadCommitted(boolean)
. The Read Committed mode
overrides other configuration settings except for READ_UNCOMMITTED
.
Otherwise, the default lock mode is to acquire read locks and release
them according to the default locking rules
for
transactional and non-transactional operations.
public static final LockMode READ_UNCOMMITTED
The Read Uncommitted mode is used if this lock mode is explicitly
passed for the lock mode parameter, or if null or DEFAULT
is
passed and Read Uncommitted is the default -- see DEFAULT
for
details.
Unlike READ_UNCOMMITTED_ALL
, deleted records will be skipped
even when the deleting transaction is still open. No blocking will occur
and LockConflictException
is never thrown when using this
mode.
See the locking rules
for information on how Read
Uncommitted impacts transactional and non-transactional locking.
public static final LockMode READ_UNCOMMITTED_ALL
The Read Uncommitted mode is used only when this lock mode is explicitly passed for the lock mode parameter.
Unlike READ_UNCOMMITTED
, deleted records will not be skipped
even when the deleting transaction is open. If the DB is a duplicates DB
or the record's data is not requested, the deleted record will be
returned. If the DB is not a duplicates DB and the record's data is
requested, blocking will occur until the deleting transaction is closed.
In the latter case, LockConflictException
will be thrown when
this blocking results in a deadlock or a lock timeout.
See the locking rules
for information on how Read
Uncommitted impacts transactional and non-transactional locking.
public static final LockMode READ_COMMITTED
Note that this LockMode may only be passed to Database
get
methods, not to Cursor
methods. To configure a cursor for Read
Committed isolation, use CursorConfig.setReadCommitted(boolean)
.
See the locking rules
for information on how Read
Committed impacts transactional and non-transactional locking.
public static final LockMode RMW
Because it causes a write lock to be acquired, specifying this lock
mode as a Cursor
or Database
get
(read) method
parameter will override the Read Committed or Read Uncommitted isolation
mode that is configured using CursorConfig
or TransactionConfig
. The write lock will acquired and held until the end
of the transaction. For non-transactional use, the write lock will be
released when the cursor is moved to a new position or closed.
Setting this flag can eliminate deadlock during a read-modify-write cycle by acquiring the write lock during the read part of the cycle so that another thread of control acquiring a read lock for the same item, in its own read-modify-write cycle, will not result in deadlock.
public static LockMode[] values()
for (LockMode c : LockMode.values()) System.out.println(c);
public static LockMode valueOf(java.lang.String name)
name
- the name of the enum constant to be returned.java.lang.IllegalArgumentException
- if this enum type has no constant with the specified namejava.lang.NullPointerException
- if the argument is nullpublic ReadOptions toReadOptions()
WARNING: Do not modify the returned object, since it is a singleton.
public java.lang.String toString()
toString
in class java.lang.Enum<LockMode>
Copyright (c) 2002, 2017 Oracle and/or its affiliates. All rights reserved.


<glossStatus>
The <glossStatus>
element identifies the usage status of a preferred or
alternate term. If the status isn't specified, the <glossterm>
provides
a preferred term and an alternate term provides an allowed term.
Category: Glossentry elements


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Multitenant Hands-On Lab
Oracle Multitenant Product Management
Note: Read the Before you begin section and then please make your selection on the sidebar for each lab in order to see the lab instructions.
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I am a highly motivated multi-media director with over three years of experience across multiple industries, including radio, freelance graphic design, freelance web design and video games. Major tasks include: website design, filming and video editing, 3D modeling, digital graphics, social media management and market research and strategy building.
My work in the gaming industry involved developing for virtual reality, multiple platforms including mobile and PC, developing for the Kennedy Space Center and Epic Games, managing a successful Kickstarter campaign and supporting Orlando start-up companies such as Indiebox and IndieCade.
As a media director in broadcasting, I completed a variety of tasks for major radio stations iHeartRadio and Beasley Media. Specific duties included: website development, podcast production, guest starring onair, managing social media, digital and print graphics for events, newsletters and market research and strategy building.


Released around March 2013
A: Devs
Docker will eventually be able to target FreeBSD, Solaris and maybe OS X.
A: Server Ops
1 as long as it's Ubuntu, Debain, others are on the way (Centos, RHEL, Arch, Fedora, etc)
2 as long as they don't ship with a custom kernel
3 at least 3.8; support for RHEL 2.6.32 is coming
Units of software delivery (ship it!)
*Unless you emulate CPU with qemu and binfmt
From 10,000 feet
Its a lightweight VM
Looking closer
Its chroot on steroids
For Developers
For Server Ops
Isolation with namespaces
Isolation with cgroups
Copy-on-write storage


Genesis 36:20
These are the sons of Seir the Horite, who inhabited the land; Lotan, and Shobal, and Zibeon, and Anah,


Links
Link is text that users can click or tap to access websites or subsequent pages.
Types
Internal links
Internal links leads to another page or section inside application. These link are usually opened in same tab.
internal linkExternal links
External links leads user to pages from other website or application. They are ussualy opened in new tab and then we apped them with particual icon.
Gihub


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CHIKV mAbs virus CHKVmab antibody J., mAb antibodies plants infection {border-style efficacy Lai, px;} #ffffff;} H., plant�?produced production Chen, benthamiana mice produced M., activity expression cells human monoclonal using ∆XFpCHKVmab CHKVmabs S., WTpCHKVmab mouse neutralizing plant protein anti�?CHIKV leaves previously therapeutics vivo viral (Pal DENV Plant effector mammalian neutralization potency studies A., Biotechnol. chikungunya glycosylation potential results used ∆XFT (Figure N�?glycans described glycoforms incubated performed plant�?made px; {font-family C., D., IgG Lai Zika dpi font-size infection. plant�?derived proteins purified therapeutic vitro (Lai Dis., Figure Lane Nicotiana SDS�?PAGE Steinkellner, Sun, anti�?WNV assembled demonstrated developed development double; envelope glycoengineered heavy immune light manufacturing virus. (Chen (Dent ADE Acad. CHIKV. Chikungunya He, Hurtado, N., Negl. Nile N�?glycosylation N�?linked Proc. Trop University Yang, analysed analysis arthritis blood border-color border-width chain copy domain enhancement example, exhibited extracted functions highly lethal level mice. plaque potent purification recombinant showed similar solid; treated viraemia {font-style {font-weight %–% (ATCC, (Acharya (Jefferis, CBL/ Dent, F., GnGn Gorlatov, Lanes PBS Plant�?produced R., RNA Sci. Vero activities antiviral anti�?human bold cell cell�?produced chain, control courier; culture current debilitating delivery determined developing effective efficacious efficacy. efficiently em; gamma humans including indicate indicated kappa low mAb) mixture model models pCHKVmab particles plants. process produce protective pt;} reducing significantly single specific transient typical vaccine variants work °C.


| products | earnings | comission | company | rating | |
|---|---|---|---|---|---|
|
Brad Simmons
HTML, JS, ReactJS
|
$8,000,000 In Proccess | $520 Paid | Intertico Web, UI/UX Design | Best Rated | View Offer |
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Jessie Clarcson
C#, ASP.NET, MS SQL
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$23,000,000 Pending | $1,600 Rejected | Agoda Houses & Hotels | Above Avarage | View Offer |
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Lebron Wayde
PHP, Laravel, VueJS
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$34,000,000 Paid | $6,700 Paid | RoadGee Paid | Best Rated | View Offer |
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Natali Trump
Python, PostgreSQL, ReactJS
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$2,600,000 Paid | $14,000 Pending | The Hill Insurance | Avarage | View Offer |


Hardware requirements: Android
The minimum Android SDK version is 11, meaning Android 3.0 (Honeycomb;
released in 2011). For development, we have used:
- Asus Transformer Prime TF201 (Android 4.1.1) — nice keyboard with an
extra battery in it, though WiFi only with no 3G connection.
- Sony Xperia Z2 tablet (available in WiFi and 3G versions).
Hardware requirements: iOS
- We suggest an iPad or iPad mini; iPhones are probably just too
small. CamCOPS has been tested on an iPad 2 and works fine.
- A physical (Bluetooth) keyboard is useful if you plan on using the
clinical clerking aspects or other tasks requiring significant typing.
- Not much information is stored on the tablet (it’s shipped periodically
to the server) so we think any model of iPad will do.
Hardware requirements: server
Any computer capable of running Linux/Apache/MySQL should work.


from __future__ import print_function
import math
import torch.nn as nn
import numpy as np
[docs]class Loss(object):
""" Base class for encapsulation of the loss functions.
This class defines interfaces that are commonly used with loss functions
in training and inferencing. For information regarding individual loss
functions, please refer to http://pytorch.org/docs/master/nn.html#loss-functions
Note:
Do not use this class directly, use one of the sub classes.
Args:
name (str): name of the loss function used by logging messages.
criterion (torch.nn._Loss): one of PyTorch's loss function. Refer
to http://pytorch.org/docs/master/nn.html#loss-functions for
a list of them.
Attributes:
name (str): name of the loss function used by logging messages.
criterion (torch.nn._Loss): one of PyTorch's loss function. Refer
to http://pytorch.org/docs/master/nn.html#loss-functions for
a list of them. Implementation depends on individual
sub-classes.
acc_loss (int or torcn.nn.Tensor): variable that stores accumulated loss.
norm_term (float): normalization term that can be used to calculate
the loss of multiple batches. Implementation depends on individual
sub-classes.
"""
def __init__(self, name, criterion):
self.name = name
self.criterion = criterion
if not issubclass(type(self.criterion), nn.modules.loss._Loss):
raise ValueError("Criterion has to be a subclass of torch.nn._Loss")
# accumulated loss
self.acc_loss = 0
# normalization term
self.norm_term = 0
[docs] def reset(self):
""" Reset the accumulated loss. """
self.acc_loss = 0
self.norm_term = 0
[docs] def get_loss(self):
""" Get the loss.
This method defines how to calculate the averaged loss given the
accumulated loss and the normalization term. Override to define your
own logic.
Returns:
loss (float): value of the loss.
"""
raise NotImplementedError
[docs] def eval_batch(self, outputs, target):
""" Evaluate and accumulate loss given outputs and expected results.
This method is called after each batch with the batch outputs and
the target (expected) results. The loss and normalization term are
accumulated in this method. Override it to define your own accumulation
method.
Args:
outputs (torch.Tensor): outputs of a batch.
target (torch.Tensor): expected output of a batch.
"""
raise NotImplementedError
def cuda(self):
self.criterion.cuda()
def backward(self):
if type(self.acc_loss) is int:
raise ValueError("No loss to back propagate.")
self.acc_loss.backward()
[docs]class NLLLoss(Loss):
""" Batch averaged negative log-likelihood loss.
Args:
weight (torch.Tensor, optional): refer to http://pytorch.org/docs/master/nn.html#nllloss
mask (int, optional): index of masked token, i.e. weight[mask] = 0.
size_average (bool, optional): refer to http://pytorch.org/docs/master/nn.html#nllloss
"""
_NAME = "Avg NLLLoss"
def __init__(self, weight=None, mask=None, size_average=True):
self.mask = mask
if mask is not None:
if weight is None:
raise ValueError("Must provide weight with a mask.")
weight[mask] = 0
super(NLLLoss, self).__init__(
self._NAME,
nn.NLLLoss(weight=weight, size_average=size_average))
def get_loss(self):
if type(self.acc_loss) is int:
return 0
return self.acc_loss.data[0] / self.norm_term
def eval_batch(self, outputs, target):
self.acc_loss += self.criterion(outputs, target)
self.norm_term += 1
[docs]class Perplexity(NLLLoss):
""" Language model perplexity loss.
Perplexity is the token averaged likelihood. When the averaging options are the
same, it is the exponential of negative log-likelihood.
Args:
weight (torch.Tensor, optional): refer to http://pytorch.org/docs/master/nn.html#nllloss
mask (int, optional): index of masked token, i.e. weight[mask] = 0.
"""
_NAME = "Perplexity"
_MAX_EXP = 100
def __init__(self, weight=None, mask=None):
super(Perplexity, self).__init__(weight=weight, mask=mask, size_average=False)
def eval_batch(self, outputs, target):
self.acc_loss += self.criterion(outputs, target)
if self.mask is None:
self.norm_term += np.prod(target.size())
else:
self.norm_term += target.data.ne(self.mask).sum()
def get_loss(self):
nll = super(Perplexity, self).get_loss()
if nll > Perplexity._MAX_EXP:
print("WARNING: Loss exceeded maximum value, capping to e^100")
return math.exp(Perplexity._MAX_EXP)
return math.exp(nll)


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ansible-bender¶
Tool which bends containers using Ansible playbooks and turns them into container images. It has a pluggable builder selection — it is up to you to pick the tool which will be used to construct your container image. Right now the only supported builder is buildah. More to come in the future. Ansible-bender (ab) relies on Ansible connection plugins for performing builds.
Features¶
You can build your container images with buildah as a backend.
Ansible playbook is your build recipe.
You are able to set various image metadata via CLI or as specific Ansible vars:
working directory
environment variables
labels
user
default command
exposed ports
You can do volume mounts during build.
Caching mechanism:
Every task result is cached as a container image layer.
You can turn this off with
--no-cache
.You can disable caching from a certain point by adding a tag
no-cache
to a task.
You can stop creating new image layers by adding tag
stop-layering
to a task.If an image build fails, it’s committed and named with a suffix
-[TIMESTAMP]-failed
(so you can take a look inside and resolve the issue).The tool tries to find python interpreter inside the base image.
You can push images you built to remote locations such as:
a registry, a tarball, docker daemon, …
podman push is used to perform the push.


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After a bit of back and forth, we are getting closer to deciding which exchange we will do our IEO with. We will have a decision and announcement tomorrow. We are very excited and blessed to have so many options. Our whitepaper will be available tomorrow and seed will comm...


Shenmue 3 fails to crack top 10 in latest UK sales chart
Despite the decades long wait Shenmue 3 has failed to attract a wider audience, as it’s outsold in the new charts by Football Manager 2020.
It’s very easy for more hardcore gamers to get entirely the wrong idea about what games are and are not popular. Shenmue 3 has been dreamt about for years, but now that it’s actually out it’s made barely a ripple in the UK physical sales charts.
The best it could manage was a debut at number 17, selling only half as much as last year’s Shenmue 1 & 2 remaster. Although that was multiformat, whereas Shenmue 3 is a PlayStation 4 and PC exclusive.
A percentage of sales will also have been digital, which aren’t counted on this chart, but that’s the same for any game. Indeed, being a PC exclusive the sales for Football Manager 2020 would be expected to be almost entirely digital, but it still managed to come in ahead of Shenmue 3 at number 16.
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Of course, Shenmue 3 was a Kickstarter project, and so the 70,000 or so that backed it will have got their copies already – which also aren’t counted in this chart – but it suggests that interest from the wider public is minimal.
In the end, and since Chart-Track count Pokémon Sword and Shield (and its double pack) as separate games, Call Of Duty: Modern Warfare floated back up to the number one spot, for its fourth non-consecutive number one of the year.
Pokémon did well in its second week though, with a 58% drop for Sword and 65% for Shield, which compares well to the 70%+ drop of Pokémon Sun and Moon.
Star Wars Jedi: Fallen Order did even better though, with a fall in sales of just 47%, which is very good for the second week of a blockbuster title. Although it’s hard to tell whether that’s due to the rising Star Wars fever ahead of the new film or simply good word of mouth.
Since it’s Black Friday this week the next set of charts will be completely different, but it’s hard to guess how they’ll settle down after that, as there are no more big name retail releases left this year.
That means either FIFA 20 or Call Of Duty: Modern Warfare are likely to end up as the Christmas number one, or simply whatever game is discounted the most closer to the big day.
UK all formats retail chart - 23 November
1 (4) Call Of Duty: Modern Warfare (PS4/XO)
2 (2) Star Wars Jedi: Fallen Order (PS4/XO/PC)
3 (1) Pokémon Sword (NS)
4 (5) FIFA 20 (PS4/XO/NS)
5 (3) Pokémon Shield (NS)
6 (6) Luigi’s Mansion 3 (NS)
7 (9) Mario Kart 8 Deluxe (NS)
8 (12)Minecraft (NS)
9(10)Mario & Sonic At The Olympic Games Tokyo 2020 (NS)
10(13)Fortnite: Darkfire Bundle (XO/PS4/NS)
Ukie Games Charts©, compiled by GfK Chart-Track
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Bygone, A Soldier's Tale is a concept simulated for the purposes of an academic project.
STAB Inc does NOT guarantee, and accepts no legal liability for, the accuracy, reliability, currency or completeness of any material contained on this domain and linked websites.
War is a constant threat to humanity. Titled as one of the “four horsemen”, it is capable of great suffering and destruction. In this day and age, in a country with little experience of the tragedy of wartime, STAB Inc. believes that it is important for the new generations to have a realistic view on the concept of war and to be aware of the true scale of death, not simply as a statistic but also on a personal level. With exception, a large portion of popular media has portrayed war as heroic, glorified and masochistic especially in a historic scenario, when the reality is, you are more likely to die in war, meaninglessly, alone and forgotten by most.


{% extends "layout_internal.html" %} {% block page_title %} {% endblock %} {% block content %} Staff guides The new digital application, setting up and how to deal with evidence, appeals, and fraud. Process application Evidence checks Part payments Appeals Suspected fraud {% endblock %}
The new digital application, setting up and how to deal with evidence, appeals, and fraud.


|
My Project
|
#include <alien.h>
Public Member Functions | |
| Alien (QPixmap *pm, float nx, float ny, int nwidth, int nheight, double nvx, double nvy, int nxmaxWindow, int nymaxwindow) | |
| void | move () |
| void | moveBack (int nx, int ny) |
| int | getX () |
| int | getY () |
| int | getOrigX () |
| int | getOrigY () |
| long | getDifferenceX () |
| long | getDifferenceY () |
Public Attributes | |
| int | lives |
| bool | isMaster |
Protected Attributes | |
| int | originalX |
| int | originalY |
this class is used to create aliens in gameplay
| Alien::Alien | ( | QPixmap * | pm, |
| float | nx, | ||
| float | ny, | ||
| int | nwidth, | ||
| int | nheight, | ||
| double | nvx, | ||
| double | nvy, | ||
| int | nxmaxWindow, | ||
| int | nymaxWindow | ||
| ) |
constructor for aliens which initializes the picture, x coordinate, y coordinate, width of the picture , the height of the picture, the velocity of the alien bullet in the xdirection, the velocity of the alien bullet in the ydirection, and the maxWindow size in the x direction and the maxWindow size of the y direction in which it can move. Also stores the original x coordinate and the original y coordinate, the lives that the alien
| long Alien::getDifferenceX | ( | ) |
returns the difference of the original x coordinate of the alien to current x coordinate of the alien. Used to move the aliens back to formation
| long Alien::getDifferenceY | ( | ) |
returns the difference of the original y coordinate of the laien to the curren y coordinate of the alien. Used to move the aliens back to formation
| int Alien::getOrigX | ( | ) |
returns the original x coordinate of the alien
| int Alien::getOrigY | ( | ) |
returns the originial y coordinate of the alien
| int Alien::getX | ( | ) |
returns the x coordinate of the alien
| int Alien::getY | ( | ) |
returns the y coordinate of the alien
| void Alien::move | ( | ) | [virtual] |
this function makes alien move like a boucing rectangle. Velocity is determined by constructor
Implements Thing.
Reimplemented in MasterAlien.
| void Alien::moveBack | ( | int | nx, |
| int | ny | ||
| ) |
moves the aliens back to formation according to the difference of the original to current coordinates


Adding HTML5 Local Storage to Your Web App
One of the things we’re working on in the Developer Relations group at LinkedIn is creating tools to help our developers work through issues and questions quickly and easily. The OAuth authentication piece is frequently tricky, so we put together an OAuth Test Console, based on a similar tool from JR Conlin.
It’s a handy tool, and certainly makes OAuth debugging much easier, but as a frequent user of the console myself, I found myself quickly getting tired of copying and pasting my consumer key, secret, oauth token, token secret into the fields every time I wanted to use the console. As a developer/user of the console, though, I certainly didn’t want to have that informations saved in a cookie which would go across the wire every time I used the tool, sharing my secret unencrypted keys.
HTML5 local storage to the rescue! This, my friends, is just the kind of thing you can do with the new HTML5 local (browser) storage functionality. Store the information in the user’s browser, and check for/use it when you find it there. The functions are easy to use and implement, so I’ll go over the pieces I used to add this to our console.
Step 1: Don’t tease the IE6 users
All of the major browsers support this functionality in their newest release. However, not everyone has a fancy, shiny new browser to work with, and telling them you have functionality they can’t have is just mean. The first thing you should do is make sure that the buttons only show up if they’re going to actually do something.
So, I added a <div> with the store/clear buttons, but set the display to none by default:
<style> #storetokens { display: none; } </style>
<div id="storetokens"> <button id="store" onclick="storeTokens(); return false;">Store Token Info</button> <button id="store" onclick="clearTokens(); return false;">Clear Token Info</button> </div>
Now that we’ve got that in place, let’s check to see if the browser knows how to store things:
<script> if (supportsHTML5Storage()) {$("#storetokens").show();} </script>
Now we have buttons for storing and clearing the tokens from the browser storage, but only users who can use it will see it.
Step 2: Store the Tokens
We’re calling a storeTokens() function when the button is clicked – let’s see what that should look like.
Once we ask the user to confirm the action, we just set the values in localStorage based on the values of the fields in the form. Note that I’m using JQuery here to make it easier to grab the selectors, but this works just as well with raw Javascript.
function storeTokens() { var storeConfirm = confirm("Do you want to store your tokens and secrets in your browser's local storage?") if (!storeConfirm) { return; } localStorage["apiKey"] = $("#apiKey").val(); localStorage["apiSecret"] = $("#apiSecret").val(); localStorage["memberToken"] = $("#memberToken").val(); localStorage["memberSecret"] = $("#memberSecret").val(); }
Step 3: Clear the Tokens
Anytime you give the user the chance to store some sensitive information, you want to give them the ability to get it back out. There are various reasons for this, but just trust me – it’s only polite.
So we have a clearTokens() function which is very similar to the storeTokens() function
function clearTokens() { var clearConfirm = confirm("Do you want to clear your tokens and secrets from your browser's local storage?") if (!clearConfirm) { return; } localStorage.removeItem("apiKey") localStorage.removeItem("apiSecret") localStorage.removeItem("memberToken") localStorage.removeItem("memberSecret") }
Step 4: Retrieve the Stored Data
Great. Now the user can store and clear the token information. There’s something missing, though. Until the form actually takes advantage of the stored data, we’re engaging in a purely academic exercise. So, when the browser loads, we should populate the fields.
function populateFields() { if (localStorage.getItem("apiKey")) { $("#apiKey").val(localStorage.getItem("apiKey")) $("#apiSecret").val(localStorage.getItem("apiSecret")); $("#memberToken").val(localStorage.getItem("memberToken")); $("#memberSecret").val(localStorage.getItem("memberSecret")); } }
That’s It
That’s pretty much all there is to getting HTML5 storage working in modern browsers. Storing secret information that a user never needs to send across the wire is a great reason to use this functionality. For users who can use it, we’ve given them a way to save themselves some extra work when they want to use the tool. As you can see, the functionality is really quite easy to implement. You can see the code in action (and take it to use for your own) – OAuth Test Console.
UNCATEGORIZED
browser storage html5


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Add a new project and give it a name. For example, if this is for your personal portfolio, name it as Portfolio... When someone submits a form in your portfolio, you will get an email with the project name in the heading.
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Insert that URL as the "action" attribute of the form tag and also add "method" attribute as "POST", and you are done!
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Welcome To NEDB Datatables
An application designed to manage and use datatables, powered by Node.js and NEDB.
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Dataset¶
dataset¶
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class
seq2seq.dataset.dataset.
Dataset
(src_max_len, tgt_max_len)[source]¶ A class that encapsulates a dataset.
Warning
Do not use this constructor directly, use one of the class methods to initialize.
Note
Source or target sequences that are longer than the respective max length will be filtered.
Parameters: -
classmethod
from_file
(path, src_max_len, tgt_max_len, src_vocab=None, tgt_vocab=None, src_max_vocab=50000, tgt_max_vocab=50000)[source]¶ Initialize a dataset from the file at given path. The file must contains a list of TAB-separated pairs of sequences.
Note
Source or target sequences that are longer than the respective max length will be filtered. As specified by maximum vocabulary size, source and target vocabularies will be sorted in descending token frequency and cutoff. Tokens that are in the dataset but not retained in the vocabulary will be dropped in the sequences.
Parameters: - path (str) – path to the dataset file
- src_max_len (int) – maximum source sequence length
- tgt_max_len (int) – maximum target sequence length
- src_vocab (Vocabulary) – pre-populated Vocabulary object or a path of a file containing words for the source language,
- None. If a pre-populated Vocabulary object, src_max_vocab wouldn't be used. (default) –
- tgt_vocab (Vocabulary) – pre-populated Vocabulary object or a path of a file containing words for the target language,
- None. If a pre-populated Vocabulary object, tgt_max_vocab wouldn't be used. (default) –
- src_max_vocab (int) – maximum source vocabulary size
- tgt_max_vocab (int) – maximum target vocabulary size
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classmethod
from_list
(src_data, tgt_data, src_max_len, tgt_max_len, src_vocab=None, tgt_vocab=None, src_max_vocab=50000, tgt_max_vocab=50000)[source]¶ Initialize a dataset from the source and target lists of sequences.
Note
Source or target sequences that are longer than the respective max length will be filtered. As specified by maximum vocabulary size, source and target vocabularies will be sorted in descending token frequency and cutoff. Tokens that are in the dataset but not retained in the vocabulary will be dropped in the sequences.
Parameters: - src_data (list) – list of source sequences
- tgt_data (list) – list of target sequences
- src_max_len (int) – maximum source sequence length
- tgt_max_len (int) – maximum target sequence length
- src_vocab (Vocabulary) – pre-populated Vocabulary object or a path of a file containing words for the source language,
- None. If a pre-populated Vocabulary object, src_max_vocab wouldn't be used. (default) –
- tgt_vocab (Vocabulary) – pre-populated Vocabulary object or a path of a file containing words for the target language,
- None. If a pre-populated Vocabulary object, tgt_max_vocab wouldn't be used. (default) –
- src_max_vocab (int) – maximum source vocabulary size
- tgt_max_vocab (int) – maximum target vocabulary size
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make_batches
(batch_size)[source]¶ Create a generator that generates batches in batch_size over data.
Parameters: batch_size (int) – number of pairs in a mini-batch Yields: (list(str), list(str)) – next pair of source and target variable in a batch
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classmethod
utils¶
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seq2seq.dataset.utils.
filter_pair
(pair, src_max_len, tgt_max_len)[source]¶ Returns true if a sentence pair meets the length requirements, false otherwise.
Parameters: Returns: true if the pair is shorter than the length cutoffs, false otherwise
Return type:
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seq2seq.dataset.utils.
prepare_data
(path, src_max_len, tgt_max_len, tokenize_func=<function space_tokenize>)[source]¶ Reads a tab-separated data file where each line contains a source sentence and a target sentence. Pairs containing a sentence that exceeds the maximum length allowed for its language are not added.
Parameters: Returns: list of (source, target) string pairs
Return type:
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seq2seq.dataset.utils.
prepare_data_from_list
(src_list, tgt_list, src_max_len, tgt_max_len, tokenize_func=<function space_tokenize>)[source]¶ Reads a tab-separated data file where each line contains a source sentence and a target sentence. Pairs containing a sentence that exceeds the maximum length allowed for its language are not added.
Parameters: - src_list (list) – list of source sequences
- tgt_list (list) – list of target sequences
- src_max_len (int) – maximum length cutoff for sentences in the source language
- tgt_max_len (int) – maximum length cutoff for sentences in the target language
- tokenize_func (func) – function for splitting words in a sentence (default is single-space-delimited)
Returns: list of (source, target) string pairs
Return type:
vocabulary¶
-
class
seq2seq.dataset.vocabulary.
Vocabulary
(size)[source]¶ A Vocabulary stores a set of words belonging to a particular language. Words in the source vocabulary are mapped to unique integer IDs during encoding. Words in the target vocabulary are recovered from the model’s output during decoding.
In addition to the words in the actual language, a Vocabulary includes three reserved tokens (and IDs) for the start-of-sentence and end-of-sentence markers, and for a special ‘mask’ marker used to handle rare/unknown words.
The Vocabulary is sorted in descending order based on frequency. If the number of words seen is greater than the maximum size of the Vocabulary, the remaining least-frequent words are ignored.
Parameters: size (int) – maximum number of words allowed in this vocabulary -
add_sequence
(sequence)[source]¶ Adds a sequence of words to the vocabulary.
Parameters: sequence (list(str)) – list of words, e.g. representing a sentence.
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add_token
(token)[source]¶ Adds an occurrence of a token to the vocabulary, incrementing its observed frequency if the word already exists.
Parameters: token (int) – word to add
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indices_from_sequence
(sequence)[source]¶ Maps a list of words to their token IDs, or else the ‘mask’ token if the word is rare/unknown.
Parameters: sequence (list(str)) – list of words to map Returns: list of mapped IDs Return type: list(int)
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classmethod
load
(file_name)[source]¶ Loads a Vocabulary from a pickle file on disk.
Parameters: file_name (str) – path to the pickle file Returns: loaded Vocabulary Return type: Vocabulary
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save
(file_name)[source]¶ Writes this Vocabulary to disk in a pickle file.
Parameters: file_name (str) – path to the target pickle file
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