collaborators

6 papers

cs.AI2025

AgentBalance: Backbone-then-Topology Design for Cost-Effective Multi-Agent Systems under Budget Constraints

Shuowei Cai, Yansong Ning, Hao Liu

Large Language Model (LLM)-based multi-agent systems (MAS) are becoming indispensable building blocks for web-scale applications such as web search, social network analytics, and o…

cs.LG2025

FedSODA: Federated Fine-tuning of LLMs via Similarity Group Pruning and Orchestrated Distillation Alignment

Manning Zhu, Songtao Guo, Pengzhan Zhou +3

Federated fine-tuning (FFT) of large language models (LLMs) has recently emerged as a promising solution to enable domain-specific adaptation while preserving data privacy. Despite…

cs.MA2025

Large Language Model Powered Intelligent Urban Agents: Concepts, Capabilities, and Applications

Jindong Han, Yansong Ning, Zirui Yuan +4

The long-standing vision of intelligent cities is to create efficient, livable, and sustainable urban environments using big data and artificial intelligence technologies. Recently…

cs.CL2025

Not All Thoughts are Generated Equal: Efficient LLM Reasoning via Multi-Turn Reinforcement Learning

Yansong Ning, Wei Li, Jun Fang +2

Compressing long chain-of-thought (CoT) from large language models (LLMs) is an emerging strategy to improve the reasoning efficiency of LLMs. Despite its promising benefits, exist…

cs.AI2025

USTBench: Benchmarking and Dissecting Spatiotemporal Reasoning of LLMs as Urban Agents

Siqi Lai, Yansong Ning, Zirui Yuan +2

Large language models (LLMs) have shown emerging potential in spatiotemporal reasoning, making them promising candidates for building urban agents that support diverse urban downst…

cs.CL2025

DiMA: An LLM-Powered Ride-Hailing Assistant at DiDi

Yansong Ning, Shuowei Cai, Wei Li +4

On-demand ride-hailing services like DiDi, Uber, and Lyft have transformed urban transportation, offering unmatched convenience and flexibility. In this paper, we introduce DiMA, a…