## Model Description

This model is a fine-tuned version of [facebook/bart-base](https://huggingface.co/facebook/bart-base) for summarization tasks using the **freeze_encoder** fine-tuning strategy.

## Training Details

### Training Data
- CNN/DailyMail dataset
- XSum dataset
- Combined training approach with data balancing

### Training Configuration

- **Learning Rate**: 5e-05
- **Batch Size**: 8
- **Epochs**: 3
- **Optimizer**: AdamW
- **Scheduler**: Cosine with warmup
- **Mixed Precision**: True
- **Gradient Checkpointing**: True

### Strategy Details
- **Total Parameters**: 139,420,416
- **Trainable Parameters**: 111,068,928
- **Trainable Ratio**: 79.66%
- **Model Size**: 531.8 MB
- **Training Time**: 27.7 minutes

## Usage

```python
from transformers import BartTokenizer, BartForConditionalGeneration

# Load model and tokenizer
tokenizer = BartTokenizer.from_pretrained("alansary/freeze_encoder-bart-summarization")
model = BartForConditionalGeneration.from_pretrained("alansary/freeze_encoder-bart-summarization")

# Example usage
text = "Your long text to summarize here..."
inputs = tokenizer.encode("summarize: " + text, return_tensors="pt", max_length=512, truncation=True)

# Generate summary
with torch.no_grad():
    summary_ids = model.generate(
        inputs, 
        max_length=128, 
        num_beams=4, 
        early_stopping=True,
        no_repeat_ngram_size=2
    )

summary = tokenizer.decode(summary_ids[0], skip_special_tokens=True)
print(summary)
```

## Model Performance

Performance metrics will be updated after evaluation completion.

## Limitations and Bias

This model inherits the limitations and biases present in the base BART model and training datasets. Users should be aware of potential biases in summarization outputs.

## Citation

If you use this model, please cite:

```bibtex
@misc{bart-finetuned-summarization-freeze_encoder,
author = {Your Name},
title = {BART Fine-tuned for Summarization (freeze_encoder)},
year = {2025},
publisher = {Hugging Face},
howpublished = {\url{https://huggingface.co/alansary/freeze_encoder-bart-summarization}}
}
```