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README.md
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# Text-to-Text Transfer Transformer (T5) Quantized Model for Medical Chatbot
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This repository hosts a quantized version of the T5 model, fine-tuned for Medical Chatbot tasks. The model has been optimized for efficient deployment while maintaining high accuracy, making it suitable for resource-constrained environments.
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## Model Details
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- **Model Architecture:** T5
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- **Task:** Medical Chatbot
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- **Dataset:** Hugging Face's ‘medical-qa-datasets’
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- **Quantization:** Float16
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- **Fine-tuning Framework:** Hugging Face Transformers
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## Usage
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### Installation
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```sh
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pip install transformers torch
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```
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### Loading the Model
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```python
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from transformers import T5Tokenizer, T5ForConditionalGeneration
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import torch
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device = "cuda" if torch.cuda.is_available() else "cpu"
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model_name = "AventIQ-AI/t5-medical-chatbot”
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tokenizer = T5Tokenizer.from_pretrained(model_name)
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model = T5ForConditionalGeneration.from_pretrained(model_name).to(device)
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def test_medical_t5(instruction, input_text, model, tokenizer):
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"""Format input like the training dataset and test the quantized model."""
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formatted_input = f"Instruction: {instruction} Input: {input_text}"
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# ✅ Tokenize input & move to correct device
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inputs = tokenizer(
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formatted_input, return_tensors="pt", padding=True, truncation=True, max_length=512
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).to(device)
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# ✅ Generate response with optimized settings
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with torch.no_grad():
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outputs = model.generate(
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input_ids=inputs["input_ids"], # Explicitly specify input tensor
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attention_mask=inputs["attention_mask"],
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max_length=200,
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num_return_sequences=1,
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temperature=0.6,
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top_k=40,
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top_p=0.85,
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repetition_penalty=2.0,
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no_repeat_ngram_size=3,
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early_stopping=True
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)
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# ✅ Decode output
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response = tokenizer.decode(outputs[0], skip_special_tokens=True)
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return response
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# Test Example
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instruction = "As a medical expert, provide a detailed and accurate diagnosis based on the patient's symptoms."
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input_text = "A patient is experiencing persistent hair fall, dizziness, and nausea. What could be the underlying cause and recommended next steps?"
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```
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## 📊 ROUGE Evaluation Results
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After fine-tuning the T5-Small model for Medical Chatbot, we obtained the following ROUGE scores:
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| **Metric** | **Score** | **Meaning** |
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|------------|---------|--------------------------------------------------------------|
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| **ROUGE-1** | 1.0 (~100%) | Measures overlap of unigrams (single words) between the reference and generated text. |
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| **ROUGE-2** | 0.5 (~50%) | Measures overlap of bigrams (two-word phrases), indicating coherence and fluency. |
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| **ROUGE-L** | 1.0 (~100%) | Measures longest matching word sequences, testing sentence structure preservation. |
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| **ROUGE-Lsum** | 0.95 (~95%) | Similar to ROUGE-L but optimized for summarization tasks. |
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## Fine-Tuning Details
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### Dataset
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The Hugging Face's `medical-qa-datasets’ dataset was used, containing different types of Patient and Doctor Questions and respective Answers.
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### Training
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- **Number of epochs:** 3
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- **Batch size:** 8
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- **Evaluation strategy:** epoch
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### Quantization
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Post-training quantization was applied using PyTorch's built-in quantization framework to reduce the model size and improve inference efficiency.
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## Repository Structure
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```
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.
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├── model/ # Contains the quantized model files
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├── tokenizer_config/ # Tokenizer configuration and vocabulary files
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├── model.safetensors/ # Quantized Model
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├── README.md # Model documentation
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```
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## Limitations
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- The model may not generalize well to domains outside the fine-tuning dataset.
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- Currently, it only supports English to French translations.
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- Quantization may result in minor accuracy degradation compared to full-precision models.
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## Contributing
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Contributions are welcome! Feel free to open an issue or submit a pull request if you have suggestions or improvements.
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