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Zeyuan Liu

9 accepted papers

2026

CPMöbius: Iterative Coach–Player Reasoning for Data-Free Reinforcement Learning

ICML 2026poster

Large Language Models (LLMs) have demonstrated strong potential in complex reasoning, yet their progress remains fundamentally constrained by reliance on massive high-quality human-curated tasks and labels, either through supervised fine-tuning (SFT) or reinforcement learning (RL) on reasoning-speci…

Cited by 0SourceScholar
2026

Exploratory Memory-Augmented LLM Agent via Hybrid On- and Off-Policy Optimization

ICLR 2026poster

Exploration remains the key bottleneck for large language model agents trained with reinforcement learning. While prior methods exploit pretrained knowledge, they fail in environments requiring the discovery of novel states. We propose EMPO$^2$, a hybrid RL framework that leverages memory for explor…

Cited by 0SourcecodeScholar
2026

How Far Can Unsupervised RLVR Scale LLM Training?

ICLR 2026poster

Unsupervised Reinforcement Learning with Verifiable Rewards (URLVR) offers a pathway for Large Language Models (LLMs) to improve without human supervision. Particularly, many works use model intrinsic information as rewards for URLVR, showing promising improvements, yet their potential and limitatio…

Cited by 0SourceScholar
2026

Maniflat3D: Learning 3D Geometry Through Planar Representations from Multi-Layer Unwrapping

AAAI 2026technical

Point-based geometric representations such as point clouds and Gaussian Splatting are fundamental for 3D understanding. However, the inherent irregularity and high-dimensional nature of point structures present significant challenges for direct 3D learning approaches, which often struggle with scala

Cited by 0SourcePDFScholar
2025

ADG: Ambient Diffusion-Guided Dataset Recovery for Corruption-Robust Offline Reinforcement Learning

NeurIPS 2025poster

Real-world datasets collected from sensors or human inputs are prone to noise and errors, posing significant challenges for applying offline reinforcement learning (RL). While existing methods have made progress in addressing corrupted actions and rewards, they remain insufficient for handling corru…

Cited by 0SourceScholar
2025

Advancing LLM Reasoning Generalists with Preference Trees

ICLR 2025poster

We introduce EURUS, a suite of large language models (LLMs) optimized for reasoning. Finetuned from Mistral-7B, Llama-3-8B, and Mixtral-8x22B, EURUS models achieve state-of-the-art results among open-source models on a diverse set of benchmarks covering mathematics, code generation, and logical reas…

2025

FairNet: Dynamic Fairness Correction without Performance Loss via Contrastive Conditional LoRA

NeurIPS 2025poster

Ensuring fairness in machine learning models is a critical challenge. Existing debiasing methods often compromise performance, rely on static correction strategies, and struggle with data sparsity, particularly within minority groups. Furthermore, their utilization of sensitive attributes is often s…

Cited by 0SourcecodeScholar
2025

World Models with Hints of Large Language Models for Goal Achieving

NAACL 2025long

Reinforcement learning struggles in the face of long-horizon tasks and sparse goals due to the difficulty in manual reward specification. While existing methods address this by adding intrinsic rewards, they may fail to provide meaningful guidance in long-horizon decision-making tasks with large sta…

Cited by 2SourcePDFScholar
2024

Multi-Agent Coordination via Multi-Level Communication

NeurIPS 2024poster

The partial observability and stochasticity in multi-agent settings can be mitigated by accessing more information about others via communication. However, the coordination problem still exists since agents cannot communicate actual actions with each other at the same time due to the circular depend…

Cited by 0SourcePDFScholar