Model Card for gpt-sw3-6.7b-v2-translator

The gpt-sw3-6.7b-v2-translator is a finetuned version of gpt-sw3-6.7b-v2-instruct on a carefully selected translation pair dataset that was gathered by AI Sweden.

Intended usage:

Translate text data from English to Swedish, or Swedish to English.

How to use:

import torch
from transformers import pipeline, StoppingCriteriaList, StoppingCriteria

device = "cuda" if torch.cuda.is_available() else "cpu"


# (Optional) - define a stopping criteria
# We ideally want the model to stop generate once the response from the Bot is generated
class StopOnTokenCriteria(StoppingCriteria):
    def __init__(self, stop_token_id):
        self.stop_token_id = stop_token_id

    def __call__(self, input_ids, scores, **kwargs):
        return input_ids[0, -1] == self.stop_token_id


pipe = pipeline(
    task="text-generation",
    model="AI-Sweden-Models/gpt-sw3-6.7b-v2-translator",
    device=device
)

stop_on_token_criteria = StopOnTokenCriteria(stop_token_id=pipe.tokenizer.bos_token_id)
text = "I like to eat ice cream in the summer."

# This will translate English to Swedish
# To translate from Swedish to English the prompt would be:
# prompt = f"<|endoftext|><s>User: Översätt till Engelska från Svenska\n{text}<s>Bot:"

prompt = f"<|endoftext|><s>User: Översätt till Svenska från Engelska\n{text}<s>Bot:"

input_tokens = pipe.tokenizer(prompt, return_tensors="pt").input_ids.to(device)
max_model_length = 2048
dynamic_max_length = max_model_length - input_tokens.shape[1]

response = pipe(
    prompt,
    max_length=dynamic_max_length,
    truncation=True,
    stopping_criteria=StoppingCriteriaList([stop_on_token_criteria])
)

print(response[0]["generated_text"].split("<s>Bot: ")[-1])

>>> "Jag tycker om att äta glass på sommaren."

Training & Data:

The training was done on 1 NVIDIA DGX using DeepSpeed ZeRO 3 for three epochs on roughly 4GB of carefully selected translation data. It is a full finetune of all of the model parameters.

Epoch	Training Loss	Evaluation Loss
1	1.309	1.281
2	1.161	1.242
3	1.053	1.219