Effective Training Data Synthesis for Improving MLLM Chart Understanding
Paper • 2508.06492 • Published • 3
How to use ChartFoundation/ECD_Finetuned_MLLMs with Transformers:
# Use a pipeline as a high-level helper
from transformers import pipeline
pipe = pipeline("image-text-to-text", model="ChartFoundation/ECD_Finetuned_MLLMs") # Load model directly
from transformers import AutoModel
model = AutoModel.from_pretrained("ChartFoundation/ECD_Finetuned_MLLMs", dtype="auto")How to use ChartFoundation/ECD_Finetuned_MLLMs with vLLM:
# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "ChartFoundation/ECD_Finetuned_MLLMs"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/completions" \
-H "Content-Type: application/json" \
--data '{
"model": "ChartFoundation/ECD_Finetuned_MLLMs",
"prompt": "Once upon a time,",
"max_tokens": 512,
"temperature": 0.5
}'docker model run hf.co/ChartFoundation/ECD_Finetuned_MLLMs
How to use ChartFoundation/ECD_Finetuned_MLLMs with SGLang:
# Install SGLang from pip:
pip install sglang
# Start the SGLang server:
python3 -m sglang.launch_server \
--model-path "ChartFoundation/ECD_Finetuned_MLLMs" \
--host 0.0.0.0 \
--port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/completions" \
-H "Content-Type: application/json" \
--data '{
"model": "ChartFoundation/ECD_Finetuned_MLLMs",
"prompt": "Once upon a time,",
"max_tokens": 512,
"temperature": 0.5
}'docker run --gpus all \
--shm-size 32g \
-p 30000:30000 \
-v ~/.cache/huggingface:/root/.cache/huggingface \
--env "HF_TOKEN=<secret>" \
--ipc=host \
lmsysorg/sglang:latest \
python3 -m sglang.launch_server \
--model-path "ChartFoundation/ECD_Finetuned_MLLMs" \
--host 0.0.0.0 \
--port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/completions" \
-H "Content-Type: application/json" \
--data '{
"model": "ChartFoundation/ECD_Finetuned_MLLMs",
"prompt": "Once upon a time,",
"max_tokens": 512,
"temperature": 0.5
}'How to use ChartFoundation/ECD_Finetuned_MLLMs with Docker Model Runner:
docker model run hf.co/ChartFoundation/ECD_Finetuned_MLLMs
The following models are obtained via supervised fine-tuning (SFT) using the ECD-10k-Images dataset (URL) proposed in our ICCV 2025 paper, "Effective Training Data Synthesis for Improving MLLM Chart Understanding" (Code).
Comparing 4 MLLMs on six test sets: (CharXiv, ChartQA, ReachQA, ChartBench, ChartX, ECDBench)

Citation:
If it is helpful to your research, please cite our paper as follows:
@inproceedings{yang2025effective,
title={Effective Training Data Synthesis for Improving MLLM Chart Understanding},
author={Yang, Yuwei and Zhang, Zeyu and Hou, Yunzhong and Li, Zhuowan and Liu, Gaowen and Payani, Ali and Ting, Yuan-Sen and Zheng, Liang},
booktitle={Proceedings of the IEEE/CVF International Conference on Computer Vision (ICCV)},
year={2025}
}
Base model
Qwen/Qwen2.5-VL-7B-Instruct
docker model run hf.co/ChartFoundation/ECD_Finetuned_MLLMs