Haodong Duan is a research scientist with eight years of experience bridging academic excellence and production-grade open-source engineering in multimodal AI. He holds a Ph.D. from CUHK and a B.S. from Peking University, has published 30+ papers with 6,500+ citations, and led the creation of MMBench and the Open VLM Leaderboard—now key fixtures in multimodal evaluation. At Shanghai AI Lab he led the multi-modal evaluation team and contributed core components to widely used toolkits like MMAction2, PySkl, MMCV and OpenCompass, reflecting deep expertise in video understanding and evaluation infrastructure. His work combines rigorous benchmarking, dataset and feature-pipeline engineering (e.g., flow/gen tools and skeleton-based action modules), and practical improvements to LLM evaluation tooling. Now at ByteDance, he continues to translate cutting-edge research into widely adopted open-source systems and authoritative leaderboards.
8 years of coding experience
High School Diploma, High School Diploma at No.2 High School of East China Normal University
Bachelor of Science - BS, Computer Science, Bachelor of Science - BS, Computer Science at Peking University
Contributions:1 release, 5 reviews, 91 commits in 9 months
Contributions summary:Haodong primarily worked on the core functionality of the `pyskl` repository, focusing on skeleton-based action recognition. The commits demonstrate modifications to the `smp.py` file, likely involving updates to the skeleton processing or model training pipeline. Several commits involve adding and modifying the `custom_2d_skeleton.py` file, suggesting contributions to a custom 2D skeleton extraction tool. Moreover, the user added configurations and examples related to action recognition tasks, including support for the Diving48 dataset.
OpenMMLab's Next Generation Video Understanding Toolbox and Benchmark
Role in this project:
Back-end Developer & ML Engineer
Contributions:12 releases, 426 reviews, 367 commits in 1 year 11 months
Contributions summary:Haodong's commits primarily focused on implementing and modifying functionality related to flow estimation and processing within the mmaction2 repository. They added a `gen_flow` tool with support for different algorithms, which suggests involvement in developing or integrating features for video analysis. Further modifications to existing code, including changes to data loading pipelines and models for various action recognition tasks (TSN, SlowFast, etc.), demonstrate their role as an engineer contributing to the project's core functionality. Additionally, the introduction of a feature extraction tool indicates a focus on preparing or processing data for training or analysis.
avax3dvisual-recognitionbenchmarkvideo
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