Generated by GLIGEN using the grounded inpainting mode, with three boxes: white doctor coat, stethoscope, white doctor hat with a red cross sign.

LLaVA-Med was initialized with the general-domain LLaVA and then continuously trained in a curriculum learning fashion (first biomedical concept alignment then full-blown instruction-tuning). We evaluated LLaVA-Med on standard visual conversation and question answering tasks.

Data License

Usage and License Notices: The data, code, and model checkpoints are intended and licensed for research use only. They are also subject to additional restrictions dictated by the Terms of Use: LLaMA, Vicuna and GPT-4 respectively. The data is made available under CC BY NC 4.0. The data, code, and model checkpoints may be used for non-commercial purposes and any models trained using the dataset should be used only for research purposes. It is expressly prohibited for models trained on this data to be used in clinical care or for any clinical decision making purposes.

Model Description

Large Language and Vision Assistant for bioMedicine (i.e., “LLaVA-Med”) is a large language and vision model trained using a curriculum learning method for adapting LLaVA to the biomedical domain. It is an open-source release intended for research use only to facilitate reproducibility of the corresponding paper which claims improved performance for open-ended biomedical questions answering tasks, including common visual question answering (VQA) benchmark datasets such as PathVQA and VQA-RAD.

Model Uses

Intended Use

The data, code, and model checkpoints are intended to be used solely for (I) future research on visual-language processing and (II) reproducibility of the experimental results reported in the reference paper. The data, code, and model checkpoints are not intended to be used in clinical care or for any clinical decision making purposes.

Primary Intended Use

The primary intended use is to support AI researchers reproducing and building on top of this work. LLaVA-Med and its associated models should be helpful for exploring various biomedical vision-language processing (VLP ) and vision question answering (VQA) research questions.

Out-of-Scope Use

Any deployed use case of the model --- commercial or otherwise --- is out of scope. Although we evaluated the models using a broad set of publicly-available research benchmarks, the models and evaluations are intended for research use only and not intended for deployed use cases. Please refer to the associated paper for more details.

Data

This model builds upon PMC-15M dataset, which is a large-scale parallel image-text dataset for biomedical vision-language processing. It contains 15 million figure-caption pairs extracted from biomedical research articles in PubMed Central. It covers a diverse range of biomedical image types, such as microscopy, radiography, histology, and more.

Limitations

This model was developed using English corpora, and thus may be considered English-only. This model is evaluated on a narrow set of biomedical benchmark tasks, described in LLaVA-Med paper. As such, it is not suitable for use in any clinical setting. Under some conditions, the model may make inaccurate predictions and display limitations, which may require additional mitigation strategies. In particular, this model is likely to carry many of the limitations of the model from which it is derived, LLaVA.

Further, this model was developed in part using the PMC-15M dataset. The figure-caption pairs that make up this dataset may contain biases reflecting the current practice of academic publication. For example, the corresponding papers may be enriched for positive findings, contain examples of extreme cases, and otherwise reflect distributions that are not representative of other sources of biomedical data.

Install

Clone the LLaVA-Med Github repository and navigate to LLaVA-Med folder

bash

https://github.com/microsoft/LLaVA-Med.git
cd LLaVA-Med

Install Package: Create conda environment

Shell

conda create -n llava-med python=3.10 -y
conda activate llava-med
pip install --upgrade pip  # enable PEP 660 support

Install additional packages for training cases

Shell

pip uninstall torch torchvision -y
pip install torch==2.0.0+cu117 torchvision==0.15.1+cu117 torchaudio==2.0.1 --index-url https://download.pytorch.org/whl/cu117
pip install openai==0.27.8
pip uninstall transformers -y
pip install git+https://github.com/huggingface/transformers@cae78c46
pip install -e .

pip install einops ninja open-clip-torch
pip install flash-attn --no-build-isolation

Serving

The model weights above are delta weights. The usage of LLaVA-Med checkpoints should comply with the base LLM's model license: LLaMA.

Instructions:

Download the delta weights.
Get the original LLaMA weights in the huggingface format by following the instructions here.
Use the following scripts to get LLaVA-Med weights by applying our delta. In the script below, set the --delta argument to the path of the unzipped llava_med_in_text_60k_delta directory. It can be adapted for other delta weights by changing the --delta argument (and base/target accordingly).

bash

python3 -m llava.model.apply_delta \
    --base /path/to/llama-7b \
    --target /output/path/to/llava_med_in_text_60k \
    --delta path/to/llava_med_in_text_60k_delta

Evaluation

Medical Visual Chat (GPT-assisted Evaluation)

Our GPT-assisted evaluation pipeline for multimodal modeling is provided for a comprehensive understanding of the capabilities of vision-language models. Please see our paper for more details.

Generate LLaVA-Med responses

Shell

python model_vqa.py \
    --model-name ./checkpoints/LLaVA-7B-v0 \
    --question-file data/eval/llava_med_eval_qa50_qa.jsonl \
    --image-folder data/images/ \
    --answers-file /path/to/answer-file.jsonl

Evaluate the generated responses. In our case, llava_med_eval_qa50_qa.jsonl contains the questions, context (captions and inline-mentions) and responses generated by text-only GPT-4 (0314), which we treat as ground truth.

Shell

python llava/eval/eval_multimodal_chat_gpt_score.py \
    --question_input_path data/eval/llava_med_eval_qa50_qa.jsonl \
    --input_path /path/to/answer-file.jsonl \
    --output_path /path/to/save/gpt4-eval-for-individual-answers.jsonl

Summarize the evaluation results

python summarize_gpt_review.py

Medical VQA

Three Medical VQA datasets are considered in our experiments, including VQA-Rad, SLAKE, Pathology-VQA. We use VQA-Rad as the running example to illustrate how LLaVA-Med is applied to a downstream scenario.

- Prepare Data

Please see VQA-Rad repo for setting up the dataset.
Generate VQA-Rad dataset for LLaVA-Med conversation-style format (the same format with instruct tuning). For each dataset, we process it into three components: train.json, test.json, images.

- Fine-tuning

To achieve the higher performance for given a downstream dataset, the same full-model tuning script with instruct tuning is used to continue train LLaVA-Med.

Detailed script to fine-tune to downstream datasets: LLaVA-Med-7B, 8x A100 (40G). Time: ~1 hour.

Shell

torchrun --nnodes=1 --nproc_per_node=8 --master_port=25001 \
    llava/train/train_mem.py \
    --model_name_or_path /path/to/checkpoint_llava_med_instruct_60k_inline_mention \
    --data_path /path/to/eval/vqa_rad/train.json \
    --image_folder /path/to/eval/vqa_rad/images \
    --vision_tower openai/clip-vit-large-patch14 \
    --mm_vision_select_layer -2 \
    --mm_use_im_start_end True \
    --bf16 True \
    --output_dir /path/to/checkpoint_llava_med_instruct_60k_inline_mention/eval/fine_tuned/vqa_rad \
    --num_train_epochs 3 \
    --per_device_train_batch_size 1 \
    --per_device_eval_batch_size 4 \
    --gradient_accumulation_steps 8 \
    --evaluation_strategy "no" \
    --save_strategy "steps" \
    --save_steps 5000 \
    --save_total_limit 3 \
    --learning_rate 2e-5 \
    --weight_decay 0. \
    --warmup_ratio 0.03 \
    --lr_scheduler_type "cosine" \
    --logging_steps 1 \
    --tf32 True \
    --fsdp "full_shard auto_wrap" \
    --fsdp_transformer_layer_cls_to_wrap 'LlamaDecoderLayer' \
    --model_max_length 2048 \
    --gradient_checkpointing True \
    --lazy_preprocess True \
    --report_to wandb

- Evaluation

Depending on which checkpoint is employed in evaluation, zero-shot performance is reported on medical instruct tuned checkpoint (eg, LLaVA-Med-7B), and fine-tuned performance is reported on checkpoint that has been further tuned on training set of the downstream datasets (eg, LLaVA-Med-7B-VQA-Rad ).

(a) Generate LLaVA responses on ScienceQA dataset

(a.1). [Option 1] Multiple-GPU inference You may evaluate this with multiple GPUs, and concatenate the generated jsonl files. Please refer to our script for batch evaluation.

Shell

python llava/eval/run_med_datasets_eval_batch.py --num-chunks 8  --model-name /path/to/checkpoint_llava_med_instruct_60k_inline_mention/eval/fine_tuned/vqa_rad \
    --question-file path/to/eval/vqa_rad/test.json \
    --image-folder path/to/eval/vqa_rad/images \
    --answers-file /path/to/checkpoint_llava_med_instruct_60k_inline_mention/eval/fine_tuned/vqa_rad/test-answer-file.jsonl

(a.2). [Option 2] Single-GPU inference

Shell

python llava/eval/model_vqa_med.py --model-name /path/to/checkpoint_llava_med_instruct_60k_inline_mention/eval/fine_tuned/vqa_rad \
    --question-file path/to/eval/vqa_rad/test.json \
    --image-folder path/to/eval/vqa_rad/images \
    --answers-file /path/to/checkpoint_llava_med_instruct_60k_inline_mention/eval/fine_tuned/vqa_rad/test-answer-file.jsonl

(b) Evaluate the generated responses

(b.1). [Option 1] Evaluation for all three VQA datasets

Shell

python llava/eval/run_eval_batch.py \
    --pred_file_parent_path /path/to/llava-med \
    --target_test_type test-answer-file

It collects the decoding results of all predictions files under the project path, computes the corresponding evaluation metrics, and outputs the results in "eval_results_med_datasets.jsonl". To analyze the score, we provdie ipython notebook run_eval_metrics.ipynb.

(b.2). [Option 2] Evaluation for on one specific VQA dataset

Shell

python llava/eval/run_eval.py \
    --gt /path/to/eval/vqa_rad/test.json \
    --pred /path/to/checkpoint_llava_med_instruct_60k_inline_mention/eval/fine_tuned/vqa_rad/test-answer-file.jsonl

Please find the LLaVA-Med performance in llava_med_performance.md or in the paper.

Acknowledgement

Our project is built upon LLaVA and Vicuna: They provide our base models with the amazing multimodal and langauge capabilities, respectively!

If you find LLaVA-Med useful for your your research and applications, please cite using this BibTeX:

bibtex

@article{li2023llavamed,
  title={Llava-med: Training a large language-and-vision assistant for biomedicine in one day},
  author={Li, Chunyuan and Wong, Cliff and Zhang, Sheng and Usuyama, Naoto and Liu, Haotian and Yang, Jianwei and Naumann, Tristan and Poon, Hoifung and Gao, Jianfeng},
  journal={arXiv preprint arXiv:2306.00890},
  year={2023}
}

katielink/llava-med-7b-pathvqa-delta

LLaVA-Med: Fine-tuned on PathVQA

Model Description

Model Uses

Intended Use

Primary Intended Use

Out-of-Scope Use

Data

Limitations

Install

Serving

Evaluation

Medical Visual Chat (GPT-assisted Evaluation)

Medical VQA

- Prepare Data

- Fine-tuning

- Evaluation

Acknowledgement

Related Projects

katielink/
llava-med-7b-pathvqa-delta