Dongyang Hou

GeoAgentbench: a dynamic execution benchmark for tool-augmented agents in spatial analysis

The integration of Large Language Models (LLMs) into Geographic Information Systems (GIS) marks a paradigm shift toward autonomous spatial analysis. However, evaluating these LLM-based agents remains challenging due to the complex, multi-step nature of geospatial workflows. Exist...

Land-use specific spatiotemporal scaling laws of urban vitality dynamics: Evidence from 30 Chinese cities

Urban vitality is a core attribute of livable, attractive, and sustainable cities. Studies have explored the spatiotemporal patterns of urban vitality and scaling laws in urban systems. However, whether scale-invariant vitality dynamics vary systematically across land-use categor...

KG-MS-ResNet: A Knowledge-Guided Multi-Scale Attention Residual Network for Cultivated Land Change Monitoring

Abstract. Cultivated land conversion to built-up area is the core form of farmland non-agriculturalization and the main threat to farmland protection. China has strict requirements for safeguarding farmland security and holding the 1.8-billion-mu farmland red line. However, curre...