ymoslem/ModernBERT-large-qe-v1

Quality Estimation for Machine Translation

This model is a fine-tuned version of answerdotai/ModernBERT-large on the ymoslem/wmt-da-human-evaluation dataset.

It achieves the following results on the evaluation set:

• Loss: 0.0564

Model description

This model is for reference-free quality estimation (QE) of machine translation (MT) systems.

Training procedure

Training hyperparameters

This model uses the full maximum length of the tokenizer, which is 8192. The version with 512 maximum length can be found here ymoslem/ModernBERT-large-qe-maxlen512-v1

The following hyperparameters were used during training:

• learning_rate: 8e-05
• train_batch_size: 128
• eval_batch_size: 128
• seed: 42
• optimizer: Use OptimizerNames.ADAMW_TORCH_FUSED with betas=(0.9,0.999) and epsilon=1e-08 and optimizer_args=No additional optimizer arguments
• lr_scheduler_type: linear
• training_steps: 10000

Training results

Training Loss	Epoch	Step	Validation Loss
0.0631	0.1004	1000	0.0674
0.0614	0.2007	2000	0.0599
0.0578	0.3011	3000	0.0585
0.0585	0.4015	4000	0.0579
0.0568	0.5019	5000	0.0570
0.057	0.6022	6000	0.0568
0.0579	0.7026	7000	0.0567
0.0573	0.8030	8000	0.0565
0.0568	0.9033	9000	0.0564
0.0571	1.0037	10000	0.0564

Framework versions

• Transformers 4.48.0
• Pytorch 2.4.1+cu124
• Datasets 3.2.0
• Tokenizers 0.21.0

Inference

1. Install the required libraries.

pip3 install --upgrade datasets accelerate transformers
pip3 install --upgrade flash_attn triton

2. Load the test dataset.

from datasets import load_dataset

test_dataset = load_dataset("ymoslem/wmt-da-human-evaluation",
                             split="test",
                             trust_remote_code=True
                            )
print(test_dataset)

3. Load the model and tokenizer:

from transformers import AutoModelForSequenceClassification, AutoTokenizer
import torch

# Load the fine-tuned model and tokenizer
model_name = "ymoslem/ModernBERT-large-qe-v1"
model = AutoModelForSequenceClassification.from_pretrained(
    model_name,
    device_map="auto",
    torch_dtype=torch.bfloat16,
    attn_implementation="flash_attention_2",
)
tokenizer = AutoTokenizer.from_pretrained(model_name)

# Move model to GPU if available
device = "cuda" if torch.cuda.is_available() else "cpu"
model.to(device)
model.eval()

4. Prepare the dataset. Each source segment src and target segment tgt are separated by the sep_token, which is '</s>' for ModernBERT.

sep_token = tokenizer.sep_token
input_test_texts = [f"{src} {sep_token} {tgt}" for src, tgt in zip(test_dataset["src"], test_dataset["mt"])]

5. Generate predictions.

If you print model.config.problem_type, the output is regression. Still, you can use the "text-classification" pipeline as follows (cf. pipeline documentation):

from transformers import pipeline

classifier = pipeline("text-classification",
                      model=model_name,
                      tokenizer=tokenizer,
                      device=0,
                     )

predictions = classifier(input_test_texts,
                         batch_size=128,
                         truncation=True,
                         padding="max_length",
                         max_length=tokenizer.model_max_length,
                       )
predictions = [prediction["score"] for prediction in predictions]

Alternatively, you can use an elaborate version of the code, which is slightly faster and provides more control.

from torch.utils.data import DataLoader
import torch
from tqdm.auto import tqdm

# Tokenization function
def process_batch(batch, tokenizer, device):
    sep_token = tokenizer.sep_token
    input_texts = [f"{src} {sep_token} {tgt}" for src, tgt in zip(batch["src"], batch["mt"])]
    tokens = tokenizer(input_texts,
                       truncation=True,
                       padding="max_length",
                       max_length=tokenizer.model_max_length,
                       return_tensors="pt",
                      ).to(device)
    return tokens
    


# Create a DataLoader for batching
test_dataloader = DataLoader(test_dataset, 
                             batch_size=128,   # Adjust batch size as needed
                             shuffle=False)


# List to store all predictions
predictions = []

with torch.no_grad():
    for batch in tqdm(test_dataloader, desc="Inference Progress", unit="batch"):

        tokens = process_batch(batch, tokenizer, device)
        
        # Forward pass: Generate model's logits
        outputs = model(**tokens)

        # Get logits (predictions)
        logits = outputs.logits

        # Extract the regression predicted values
        batch_predictions = logits.squeeze()

        # Extend the list with the predictions
        predictions.extend(batch_predictions.tolist())