collaborators

6 papers

cs.SD2026

Reinforcement Learning with Evolving Rubrics as Rewards for Audio Reasoning

Fangxu Yu, Tao Feng, Dehai Min +6

Audio reasoning is essential for machine understanding of the acoustic world. Reinforcement learning with verifiable rewards can elicit such reasoning, yet existing reward designs…

cs.LG2026

Weak-to-Strong On-Policy Distillation

Fangxu Yu, Weijia Xu, Michael Xu +2

On-policy distillation (OPD), which aligns a student with the teacher's token-level distribution on the student's own rollouts, is an effective paradigm for transferring capabiliti…

cs.CL2026

Rushes: A Human Preference Dataset for Pluralistic Alignment

Michael Xu, Jorge Leandro, Sudha Rao +5

We introduce Rushes, a dataset and benchmark for studying revealed human engagement preferences in interactive narrative environments. Rushes is collected through a game interface…

cs.CL2026

GFlowRL: Scaling Distribution-Matching RL to Large Language Models

Xiaodong Liu, Michael Xu, Jack W. Stokes +3

Generative Flow Networks (GFlowNets) offer a promising alternative to reward-maximizing reinforcement learning (RL) for large reasoning models, encouraging diverse reasoning paths…

cs.AI2026

MineNPC-Task: Task Suite for Memory-Aware Minecraft Agents

Tamil Sudaravan Mohan Doss, Michael Xu, Sudha Rao +2

We present MineNPC-Task, a user-authored benchmark and evaluation harness for testing memory-aware, mixed-initiative LLM agents in open-world Minecraft. Rather than relying on synt…

cs.CR2025

Adversarial Distilled Retrieval-Augmented Guarding Model for Online Malicious Intent Detection

Yihao Guo, Haocheng Bian, Liutong Zhou +16

With the deployment of Large Language Models (LLMs) in interactive applications, online malicious intent detection has become increasingly critical. However, existing approaches fa…