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Heyang Gao

3 accepted papers

2026

Solving the Granularity Mismatch: Hierarchical Preference Learning for Long-Horizon LLM Agents

ICLR 2026poster

Large Language Models (LLMs) as autonomous agents are increasingly tasked with solving complex, long-horizon problems. Aligning these agents via preference-based methods like Direct Preference Optimization (DPO) is a promising direction, yet it faces a critical granularity mismatch. Trajectory-lev…

Cited by 0SourceScholar
2025

GenSim: A General Social Simulation Platform with Large Language Model based Agents

NAACL 2025system demonstrations

With the rapid advancement of large language models (LLMs), recent years have witnessed many promising studies on leveraging LLM-based agents to simulate human social behavior. While prior work has demonstrated significant potential across various domains, much of it has focused on specific scenario…

2021

"Safe Skin" - A Low-Cost Capacitive Proximity-Force-Fusion Sensor for Safety in Robots

IROS 2021poster

This paper presents the design and evaluation of the low-cost capacitive proximity-force-fusion sensor "safe skin", which can measure simultaneously the proximity of humans as well as the contact force. It was designed such that the force and proximity sensing functions can work concurrently without…

Cited by 6SourceScholar