---
library_name: peft
base_model: microsoft/phi-2
tags:
- biomedical
- summarization
- lay-summary
- healthcare
- nlp
- fine-tuned
- lora
- peft
- elife
- plos
- medical-text
language:
- en
license: mit
metrics:
- rouge
- bertscore
- readability
datasets:
- elife
- plos
pipeline_tag: text2text-generation
---

# Phi-2 BioLaySum: Biomedical Lay Summarization Model 🏆

## 📖 Model Overview

**Phi-2 BioLaySum** is a **champion model** that emerged as the most efficient and highest-performing solution for generating lay summaries of biomedical articles. This model converts complex medical research into easily understandable summaries for the general public, significantly enhancing accessibility to scientific literature.

**🥇 Key Achievement**: This model **outperformed** T5-Base, T5-Large, FlanT5-Base, BioGPT, and Falconsi-Medical_summarisation across all evaluation dimensions (relevance, readability, and factuality) while maintaining optimal computational efficiency.

## 🎯 Model Purpose

This model addresses the critical need to bridge the gap between complex biomedical research and public health literacy by:
- Converting medical articles into patient-friendly summaries
- Supporting healthcare communication between professionals and patients
- Enhancing public access to biomedical research findings
- Enabling better-informed health decisions by the general public

## 🏗️ Model Architecture

- **Base Model**: microsoft/phi-2
- **Fine-tuning Technique**: LoRA (Low-Rank Adaptation) + PEFT (Parameter Efficient Fine-tuning)
- **Model Type**: Text-to-Text Generation (Summarization)
- **Language**: English
- **Domain**: Biomedical/Healthcare

## 📊 Performance Highlights

### Why Phi-2 is the Champion Model:
- ✅ **Superior Performance**: Best scores across relevance, readability, and factuality metrics
- ✅ **Resource Efficiency**: Optimal performance-to-resource ratio
- ✅ **Compact Size**: Most efficient in terms of model size and computational requirements
- ✅ **Cost-Effective**: Best balance of quality and computational cost

### Evaluation Results:
- **Relevance**: Measured using ROUGE (1, 2, L) and BERTScore
- **Readability**: Assessed via Flesch-Kincaid Grade Level (FKGL) and Dale-Chall Readability Score (DCRS)
- **Factuality**: Verified using BARTScore and factual consistency checks

## 🚀 Quick Start

### Loading the Model

```python
from peft import PeftModel, PeftConfig
from transformers import AutoModelForCausalLM, AutoTokenizer
import torch

# Load the base model and tokenizer
base_model_name = "microsoft/phi-2"
model = AutoModelForCausalLM.from_pretrained(
    base_model_name,
    torch_dtype=torch.float16,
    device_map="auto"
)
tokenizer = AutoTokenizer.from_pretrained(base_model_name)

# Load the fine-tuned adapter
model = PeftModel.from_pretrained(model, "sank29mane/phi-2-biolaysum")

# Set padding token
if tokenizer.pad_token is None:
    tokenizer.pad_token = tokenizer.eos_token
```

### Generating Lay Summaries

```python
def generate_lay_summary(medical_text, max_length=150):
    # Prepare input
    prompt = f"Summarize the following medical text for a general audience: {medical_text}"
    inputs = tokenizer(prompt, return_tensors="pt", truncation=True, max_length=512)
    
    # Generate summary
    with torch.no_grad():
        outputs = model.generate(
            **inputs,
            max_length=max_length,
            temperature=0.7,
            do_sample=True,
            pad_token_id=tokenizer.eos_token_id
        )
    
    # Decode and return
    summary = tokenizer.decode(outputs[0], skip_special_tokens=True)
    return summary.split(":")[-1].strip()  # Extract generated part

# Example usage
medical_text = """
The study investigated the efficacy of novel therapeutic interventions 
in cardiovascular disease management through randomized controlled trials...
"""

lay_summary = generate_lay_summary(medical_text)
print(f"Lay Summary: {lay_summary}")
```

## 📚 Training Details

### Training Data
- **eLife Dataset**: Open-access biomedical research articles with lay summaries
- **PLOS Dataset**: Public Library of Science biomedical publications
- **Data Processing**: Advanced preprocessing for optimal model performance

### Training Configuration
- **Fine-tuning Method**: LoRA (Low-Rank Adaptation) with PEFT
- **Base Model**: microsoft/phi-2
- **Training Framework**: PyTorch + Hugging Face Transformers
- **Optimization**: Parameter-efficient approach reducing computational requirements

### Training Advantages
- **Efficiency**: LoRA reduces trainable parameters while maintaining performance
- **Resource-Friendly**: PEFT enables high-quality fine-tuning with limited resources
- **Stability**: Advanced techniques ensure robust model behavior

## 📈 Comparative Analysis

### Models Compared:
1. **T5-Base** - Text-to-Text Transfer Transformer (Base)
2. **T5-Large** - Text-to-Text Transfer Transformer (Large)
3. **FlanT5-Base** - Instruction-tuned T5 model
4. **BioGPT** - Biomedical domain-specific GPT
5. **Phi-2** - Microsoft's efficient language model (**Winner**)
6. **Falconsi-Medical_summarisation** - Specialized medical summarization model

### Key Findings:
- **Phi-2 outperformed all competitors** in comprehensive evaluation
- **Domain-specific models** (BioGPT, Falconsi) showed advantages over general T5 models
- **Parameter efficiency** of Phi-2 provided superior cost-effectiveness
- **Smaller models** can achieve better performance with proper fine-tuning

## 🎯 Use Cases

### Healthcare Applications:
- **Patient Education**: Convert research findings into understandable format
- **Medical Communication**: Support doctor-patient conversations
- **Health Journalism**: Assist science writers and health reporters
- **Educational Materials**: Create teaching resources for health education
- **Policy Support**: Provide accessible summaries for health policy decisions

### Target Audiences:
- Healthcare professionals seeking patient communication tools
- Patients and families researching medical conditions
- Health educators and trainers
- Medical journalists and science communicators
- Public health policy makers

## ⚡ Performance Metrics

### Evaluation Framework:
- **ROUGE Scores**: Overlap-based relevance assessment
- **BERTScore**: Semantic similarity evaluation
- **Readability Metrics**: FKGL and DCRS for accessibility
- **Factual Consistency**: BARTScore for accuracy verification

### Resource Efficiency:
- **Model Size**: Compact and deployment-friendly
- **Inference Speed**: Fast generation suitable for real-time applications
- **Memory Usage**: Optimized for various computational environments
- **Cost Effectiveness**: Best performance per computational dollar

## 🔧 Technical Specifications

### Model Details:
- **Architecture**: Transformer-based with LoRA adaptation
- **Parameters**: Base Phi-2 + efficient LoRA adapters
- **Precision**: Mixed precision training for efficiency
- **Framework**: PyTorch with Hugging Face ecosystem

### System Requirements:
- **Minimum GPU**: 4GB VRAM for inference
- **Recommended**: 8GB+ VRAM for optimal performance
- **CPU**: Compatible with CPU inference (slower)
- **Dependencies**: transformers, peft, torch

## 📖 Research Impact

This model contributes to:
- **Democratizing Medical Knowledge**: Making research accessible to all
- **Advancing Healthcare NLP**: Pushing boundaries of medical text processing
- **Resource-Efficient AI**: Demonstrating effective use of LoRA and PEFT
- **Evaluation Methodology**: Comprehensive framework for summarization assessment

## 📄 License & Citation

### License
This model is released under the **MIT License**, promoting open research and development.

### Citation
If you use this model in your research, please cite:

```bibtex
@misc{mane2024phi2biolaysum,
  title={Phi-2 BioLaySum: Resource-Efficient Biomedical Lay Summarization using LoRA and PEFT},
  author={Mane, Sanket},
  year={2024},
  publisher={Hugging Face},
  url={https://huggingface.co/sank29mane/phi-2-biolaysum}
}
```

## 🔗 Related Resources

- **GitHub Repository**: [lays-bio-summery](https://github.com/sank29mane/lays-bio-summery) - Complete training code and evaluation
- **Base Model**: [microsoft/phi-2](https://huggingface.co/microsoft/phi-2)
- **Research Paper**: [Detailed methodology and results](https://github.com/sank29mane/lays-bio-summery)

## 👨‍💻 Author

**Sanket Mane** - [@sank29mane](https://github.com/sank29mane)  
*Researcher in Biomedical NLP and Efficient Language Models*

## 📞 Contact & Support

- **GitHub Issues**: [Create an issue](https://github.com/sank29mane/lays-bio-summery/issues)
- **Model Issues**: Use the Community tab above
- **Research Collaborations**: Through GitHub profile

## 🚨 Limitations & Considerations

### Current Limitations:
- **Language**: Currently optimized for English biomedical text
- **Domain**: Focused on general biomedical research (not clinical notes)
- **Length**: Optimized for article-length inputs, may vary with very short/long texts

### Recommended Use:
- Use for biomedical research article summarization
- Validate outputs for critical healthcare decisions
- Consider human review for patient-facing applications

## 🔄 Model Updates

- **v1.0**: Initial release with LoRA+PEFT fine-tuning
- **Future**: Planned improvements for multi-language support and clinical text adaptation

---

### Framework Versions
- **PEFT**: 0.7.2.dev0
- **Transformers**: Compatible with latest versions
- **PyTorch**: 1.12+

⭐ **Star this model if you find it useful for your biomedical NLP research!** ⭐