5 papers
Bus-Conditioned Zero-Shot Trajectory Generation via Task Arithmetic
Shuai Liu, Ning Cao, Yile Chen +2
Mobility trajectory data provide essential support for smart city applications. However, such data are often difficult to obtain. Meanwhile, most existing trajectory generation met…
NextLocLLM: Location Semantics Modeling and Coordinate-Based Next Location Prediction with LLMs
Shuai Liu, Ning Cao, Yile Chen +3
Next location prediction is a critical task in human mobility analysis.Existing methods typically formulate it as a classification task based on discrete location IDs, which hinder…
STRATA-TS: Selective Knowledge Transfer for Urban Time Series Forecasting with Retrieval-Guided Reasoning
Yue Jiang, Chenxi Liu, Yile Chen +4
Urban forecasting models often face a severe data imbalance problem: only a few cities have dense, long-span records, while many others expose short or incomplete histories. Direct…
Enhancing Large Language Models for Mobility Analytics with Semantic Location Tokenization
Yile Chen, Yicheng Tao, Yue Jiang +3
The widespread adoption of location-based services has led to the generation of vast amounts of mobility data, providing significant opportunities to model user movement dynamics w…
Mixture-of-Experts for Personalized and Semantic-Aware Next Location Prediction
Shuai Liu, Ning Cao, Yile Chen +2
Next location prediction plays a critical role in understanding human mobility patterns. However, existing approaches face two core limitations: (1) they fall short in capturing th…