SpatialAct: Probing Spatial Reasoning-to-Action Capabilities of VLM Agents in 3D Scenes

Tianhui Liu, Jie Feng, Zhiheng Zheng, Shengyuan Wang, Yiming Guo, Yanxin Xi, Hangyu Fan, Yong Li, Pan Hui

Preprint

CityRiSE: Reasoning Urban Socio-Economic Status in Vision-Language Models via Reinforcement Learning

Tianhui Liu, Hetian Pang, Xin Zhang, Jie Feng, Pan Hui, Yong Li

Preprint

AI Agent Behavioral Science

Lin Chen, Yunke Zhang, Jie Feng, Haoye Chai, Honglin Zhang, Bingbing Fan, Yibo Ma, Shiyuan Zhang, Nian Li, Tianhui Liu, Nicholas Sukiennik, Keyu Zhao, Yu Li, Ziyi Liu, Fengli Xu, Yong Li

Humanities and Social Sciences Communications 2026

CityLens: Evaluating Large Vision-Language Models for Urban Socioeconomic Sensing

Tianhui Liu, Jie Feng, Hetian Pang, Xin Zhang, Tianjian Ouyang, Zhiyuan Zhang, Yong Li, Pan Hui

ICLR 2026 (CCF-A)

Mitigating Geospatial Knowledge Hallucination in Large Language Models: Benchmarking and Dynamic Factuality Aligning

Shengyuan Wang, Jie Feng, Tianhui Liu, Dan Pei, Yong Li

EMNLP 2025 Findings (CCF-B)

UrbanLLaVA: A Multi-modal Large Language Model for Urban Intelligence

Jie Feng, Shengyuan Wang, Tianhui Liu, Yanxin Xi, Yong Li

ICCV 2025 (CCF-A)

CityBench: Evaluating the Capabilities of Large Language Models for Urban Tasks

Jie Feng*, Jun Zhang*, Tianhui Liu*, Xin Zhang, Tianjian Ouyang, Junbo Yan, Yuwei Du, Siqi Guo, Yong Li

KDD 2025 (CCF-A)

CityGPT: Empowering Urban Spatial Cognition of Large Language Models

Jie Feng*, Tianhui Liu*, Yuwei Du, Siqi Guo, Yuming Lin, Yong Li

KDD 2025 (CCF-A)

Encoded Marker Clusters for Auto-Labeling in Optical Motion Capture

Hao Wang, Taogang Hou, Tianhui Liu, Jiaxin Li, Tianmiao Wang

ACM Transactions on Graphics (TOG) 2025

A Spiral Coverage Path Planning Algorithm for Nonomnidirectional Robots

Taogang Hou, Jiaxin Li, Xuan Pei, Hao Wang, Tianhui Liu

Journal of Field Robotics 2025