EVE: Unveiling Encoder-Free Vision-Language Models

Official pytorch implementation of Unveiling Encoder-Free Vision-Language Models.

📜 News

[2024/07/01] We release training code and EVE-7B weights ! 🚀
[2024/06/23] We release evaluation code, EVE-7B-Pretrain, and EVE-7B-HD weights ! 🚀
[2024/06/18] The paper is released ! 💥

💡 Motivation

• Can we remove vision encoder from VLMs?

• How to transfer an LLM to an encoder-free VLM efficiently and stably?

• How to bridge the performance gap between encoder-free and encoder-based VLMs?

🛸 Architecture

• Authors: Haiwen Diao*, Yufeng Cui*, Xiaotong Li, Yueze Wang, Huchuan Lu📧, Xinlong Wang📧

• Institutes: Dalian University of Technology; Beijing Academy of Artificial Intelligence; Peking University

• Model Zoo: [🤗EVE-7B-Pretrain] [🤗EVE-7B] [🤗EVE-7B-HD]

💡 Highlights

• 🔥 Superior Capability: An originated encoder-free LVLM with arbitrary image aspect ratio, outperforming the counterpart Fuyu-8B and approaching existing modular encoder-based LVLMs.

• 🔥 Data Efficiency: Filter solely 33M publicly avaliable data from OpenImages, SAM, LAION for pre-training; Utilizing 665K LLaVA SFT data for EVE-7B, and extra 1.2M SFT data for EVE-7B (HD).

• 🔥 Training Efficiency: Trained with two 8-A100 (40G) nodes in ~9 days or four 8-A100 nodes in ~5 days

• 🔥 Pioneering Route: We attempt to provide an efficient, transparent, and practical training strategy and procedure for developing a pure decoder-only architecture across modalities.

🤖 Model Zoo

The usage of EVE checkpoints should comply with the base LLM's model license: Llama 2.

Model	LLM	Weight	VQAv2	GQA	VizWiz	SQA_I	TextVQA	POPE	MME_P	MMBench	SEED	MM_Vet
EVE_7B_Pretrain	Vicuna_7B	HF_link	--	--	--	--	--	--	--	--	--	--
EVE_7B	Vicuna_7B	HF_link	75.4	60.8	41.8	63.0	51.9	83.6	1217.3	49.5	54.3	25.6
EVE_7B_HD	Vicuna-7B	HF_link	78.6	62.6	51.1	64.9	56.8	85.0	1305.7	52.3	56.8	25.7

👨‍💻 Todo List

• Involve more modalities into the unified EVE network.
• Full EVE series trained with more data, varied sizes, and better base models.

Contents

• Install
• Quick Usage
• Demo
• Data
• Train
• Evaluation

Install

Environment

git clone https://github.com/baaivision/EVE.git
cd EVE
conda create -n eve_envs python=3.10 -y
conda activate eve_envs

pip install --upgrade pip
pip install -e .
pip install -e ".[train]"
pip install flash-attn --no-build-isolation

Preparation

Download vicuna_model and extract them into lmsys/ path:

• vicuna-7b-v1.5.

Download preprocessor and extract them into openai/ path:

• clip-vit-large-patch14-336;
• eve-patch14-anypixel-672;
• eve-patch14-anypixel-1344.

lmsys
├── vicuna-7b-v1.5
│   │── config.json
│   │── ...
openai
├── clip-vit-large-patch14-336
│   │── config.json
│   │── ...
├── eve-patch14-anypixel-672
│   │── preprocessor_config.json
│   │── ...
├── eve-patch14-anypixel-1344
│   │── preprocessor_config.json
│   │── ...

Quick Usage

Example Code

from eve.model.builder import load_pretrained_model
from eve.mm_utils import get_model_name_from_path
from eve.eval.run_eve import eval_model

model_path = "Absolute Path of BAAI/EVE-7B-HD-v1.0"

tokenizer, model, image_processor, context_len = load_pretrained_model(
    model_path=model_path,
    model_base=None,
    model_name=get_model_name_from_path(model_path)
)

Check out the details wth the load_pretrained_model function in eve/model/builder.py.

You can also use eve/eval/eval_one_sample.py to get the output easily. By doing so, you can use this code on Colab directly after downloading this repository.

# run script
CUDA_VISIBLE_DEVICES=0 python eve/eval/eval_one_sample.py

Demo

You can also build up your local demo using the following script:

# run script
python tools/app.py

Data

You should follow this instruction Data.md to manage the datasets. Currently, we provide direct download access to the web data. However, to avoid potential disputes, we plan to release URLs for these datasets rather than the raw data in the near future.

Train

(1) LLM-guided Pre-aligning Stage: we only adopt 16M of 33M image-text data (EVE-cap16/33M) to train patch embedding and aligning layers. It really does count for efficient training, as it prevents collapse and accelerates convergence throughout the entire process.

Model	Epoch	Batch_Size	Learning_Rate	LR_Schedule	Warmup_Ratio	Max_Length	Weight_decay	Optimizer	DeepSpeed
EVE_Prealign	1	512	4e-4	cosine decay	0.03	2048	0	AdamW	zero3

Training script for EVE_Prealign as follows:

bash scripts/eve/eve7b_prealign.sh ${node_rank} ${master_addr}

(2) Generative Pre-training Stage: we use all 33M image-text pairs (EVE-cap33M) to train patch embedding and aligning layers, and the full LLM modules.

Model	Epoch	Batch_Size	Learning_Rate	LR_Schedule	Warmup_Ratio	Max_Length	Weight_decay	Optimizer	DeepSpeed
EVE_Pretrain	1	512	4e-5	cosine decay	0.01	2048	0	AdamW	zero3

Training script for EVE_Pretrain as follows:

bash scripts/eve/eve7b_pretrain.sh ${node_rank} ${master_addr}

(3) Supervised Fine-tuning Stage: We finetune the entire architecture with LLaVA-mix-665K for EVE-7B and extra 1.2M SFT conversation data for EVE-7B (HD).

Model	Epoch	Batch_Size	Learning_Rate	LR_Schedule	Warmup_Ratio	Max_Length	Weight_decay	Optimizer	DeepSpeed
EVE_Finetune	1	128	2e-5	cosine decay	0.01	2048/4096	0	AdamW	zero3

Training scripts for EVE_7B and EVE_7B_HD as follows:

bash scripts/eve/eve7b_finetune.sh ${node_rank} ${master_addr}
bash scripts/eve/eve7b_finetune_hd.sh ${node_rank} ${master_addr}

[NOTE]:
To train on fewer GPUs, you can reduce the per_device_train_batch_size and increase the gradient_accumulation_steps accordingly. Always keep the global batch size the same: per_device_train_batch_size x gradient_accumulation_steps x num_gpus.

Evaluation

To ensure the reproducibility, we evaluate the models with greedy decoding. We do not evaluate using beam search to make the inference process consistent with the chat demo of real-time outputs.

See Evaluation.md.

❤️ Acknowledgments

• LLaVA, ShareGPT: Thanks for their wonderful works and code!
• Vicuna: The amazing open-sourced large language model series!

✒️ Citation

If EVE is helpful for your research, please consider star ⭐ and citation 📝 :

@article{diao2024EVE,
  title={Unveiling Encoder-Free Vision-Language Models},
  author={Diao, Haiwen and Cui, Yufeng and Li, Xiaotong and Wang, Yueze and Lu, Huchuan and Wang, Xinlong},
  journal={arXiv:2406.11832},
  year={2024}
}

📄 License

The content of this project itself is licensed under LICENSE.