Aranya31/gpt2-medqa-ft

GPT-2 Fine-tuned on MedQA (Medical Question Answering)

This model is a GPT-2 language model fine-tuned on the MedQA dataset for medical multiple-choice question answering. It is trained to generate relevant medical answers conditioned on clinical questions, suitable for downstream applications in automated medical education or QA systems.

Model Details

• Developed by: Aranya Saha
• Finetuned from model: gpt2
• Language(s): English
• License: Apache 2.0
• Model type: Causal Language Model
• Library: 🤗 Transformers

Model Sources

• Original base model: GPT-2
• Training dataset: truehealth/medqa

Uses

Direct Use

• Clinical education and training (QA-based learning)
• Generating answers for medical board-style questions

Downstream Use

• Integrate into medical tutoring tools
• Fine-tune further on other medical NLP tasks

Out-of-Scope Use

• Should not be used as a real-time diagnostic system
• Not suitable for clinical decision-making or advice without expert validation

Bias, Risks, and Limitations

• GPT-2 and MedQA may reflect biases present in training sources
• Misinterpretation or hallucinated content can be harmful in sensitive domains like healthcare
• Model may generate plausible-sounding but incorrect medical information

Recommendations

This model should be used by professionals or in educational contexts only. Always verify generated information against trusted medical sources.

How to Get Started

from transformers import AutoTokenizer, AutoModelForCausalLM

model = AutoModelForCausalLM.from_pretrained("Aranya31/gpt2-medqa-ft")
tokenizer = AutoTokenizer.from_pretrained("Aranya31/gpt2-medqa-ft")

prompt = "What is the recommended treatment for acute asthma?\nAnswer:"
inputs = tokenizer(prompt, return_tensors="pt")
outputs = model.generate(**inputs, max_length=100, do_sample=True, temperature=0.7)
print(tokenizer.decode(outputs[0], skip_special_tokens=True))

Training Details

Training Data

• Used truehealth/medqa, containing USMLE-style medical multiple-choice questions
• Preprocessed to create instruction-output pairs (question + correct answer)

Training Procedure

• Epochs: 3
• Batch size: 4
• Max sequence length: 1024 tokens
• Precision: fp16 when CUDA is available
• Optimizer: AdamW via 🤗 Trainer API
• Learning rate: 5e-5 (standard for GPT-2 fine-tuning)

Evaluation

• Evaluated on a validation split from MedQA
• Manual qualitative checks confirmed model coherence and answer relevance
• Formal metrics like accuracy were not computed due to generative nature of the task

Environmental Impact

• Hardware: Colab/consumer GPU (NVIDIA Tesla T4/A100)
• Training time: ~1-2 hours
• Carbon emissions: Estimated under 1 kg CO2 using ML CO2 calculator

Technical Specifications

• Model Architecture: GPT-2 small (124M parameters)
• Objective: Next-token prediction using causal language modeling
• Framework: PyTorch, Hugging Face Transformers

Citation

@misc{gpt2-medqa-finetuned,
  title={GPT-2 Fine-tuned on MedQA},
  author={Aranya Saha},
  year={2025},
  howpublished={\url{https://huggingface.co/Aranya31/gpt2-medqa-ft}}
}

Contact

For questions or issues, contact: aranyasaha932@gmail.com