Yichen Guo, Tinghao Wang, Qizhe Zhang, Lingbei Meng, Yuan Zhang, Jiajun Cao, Hao Jiang, Chenwei Wu, Jixian Wu, Sixiang Chen, Tao Luo, Hongyang Cheng, Kai Tang, Chenxi Li, Renyuan Li, Xiande Huang, Wenya Wang, Shanghang Zhang

Training-free visual token reduction that preserves feature coverage, then progressively refines retained tokens as language and vision interact.

Co-first author

As a co-first author, I contributed to the design of adaptive-to-progressive token pruning and its evaluation across vision-language architectures.

Tinghao Wang, Yichen Guo, Qizhe Zhang, Yuan Zhang, Weimin Ouyang, Rui Huang, Jiajun Cao, Sixiang Chen, Hao Jiang, Jixian Wu, Zheng Lu, Bofan Zhu, Renyuan Li, Shanghang Zhang

Training-free, two-stage visual token pruning that maximizes mutual information coverage: select a representative visual pool, then refine it with task-aware signals.

Co-first author

Hao Jiang*, Zhanyu Guo*, Chenwei Wu†, Yichen Guo†, Qizhe Zhang, Junchi Yao, Jixian Wu, Jinhao You, Kai Tang, Jiajun Cao, Tinghao Wang, Mengyu Wang, Leo Anthony Celi, Shanghang Zhang

* Equal contribution · † Project leaders

Global and local latent visual memories restore visual grounding during reasoning; a reinforcement-learning policy decides when to retrieve each type of evidence.

Project Leader

Project leader, working on latent visual memory and learned memory-access policies for multimodal reasoning.

Sixiang Chen, Jiaming Liu, Jixian Wu, Yichen Guo, Tinghao Wang, Siyuan Qian, Hao Chen, Jiajun Cao, Jian Tang, Shanghang Zhang

WorldEcho diagnoses action-following failures; WorldSync aligns generation with robot dynamics to support policy learning.

Core contributor

As a core contributor, I work on understanding and improving action following in robotic world models.

Paper CodeComing soon Project page Hugging FacePrivate dataset

Dataset access is currently restricted; data upload is pending.

Jinhao You, Shuo Lyu, Zhuohang Lyu, Tanxuan Li, Zibo Zhao, Jiaxiang Hu, Kai Tang, Yichen Guo

Training-free acceleration of visual geometry transformers with layer-wise token merging and spatially preserving K/V downsampling.

Co-author

Kai Tang, Peidong Jia, Zhong Chu, Jixian Wu, Rui Ma, Jiajun Cao, Fangyuan Zhao, Sixiang Chen, Yichen Guo, Xiaowei Chi, Chun-Kai Fan, Kevin Zhang, Jinchang Xu, Fubing Yang, Weishi Mi, Xiaozhu Ju, Jian Tang, Shanghang Zhang

Safe reinforcement learning for VLA policies through imagined rollouts in an interactive world model, balancing task progress and safety.

Co-author