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Ruochen Zhou

4 accepted papers

2026

From Mathematical Reasoning to Code: Generalization of Process Reward Models in Test-Time Scaling

AAAI 2026technical

Recent advancements in improving the reasoning capabilities of Large Language Models have underscored the efficacy of Process Reward Models (PRMs) in addressing intermediate errors through structured feedback mechanisms. This study analyzes PRMs from multiple perspectives, including training methodo

Cited by 0SourcePDFScholar
2026

Learn to Reason Efficiently with Adaptive Length-based Reward Shaping

ICLR 2026poster

Large Reasoning Models (LRMs) have shown remarkable capabilities in solving complex problems through reinforcement learning (RL), particularly by generating long reasoning traces. However, these extended outputs often exhibit substantial redundancy, which limits the efficiency of LRMs. In this paper…

Cited by 0SourcecodeScholar
2026

Phantom Menace: Exploring and Enhancing the Robustness of VLA Models Against Physical Sensor Attacks

AAAI 2026technical

Vision-Language-Action (VLA) models revolutionize robotic systems by enabling end-to-end perception-to-action pipelines that integrate multiple sensory modalities, such as visual signals processed by cameras and auditory signals captured by microphones. This multi-modality integration allows VLA mod

Cited by 0SourcePDFScholar
2025

Why Is Spatial Reasoning Hard for VLMs? An Attention Mechanism Perspective on Focus Areas

ICML 2025poster

Large Vision Language Models (VLMs) have long struggled with spatial reasoning tasks. Surprisingly, even simple spatial reasoning tasks, such as recognizing “under” or “behind” relationships between only two objects, pose significant challenges for current VLMs. We believe it is crucial to use the l…