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cs.AI2026

Disentangling Deception and Hallucination Failures in LLMs

Haolang Lu, Hongrui Peng, WeiYe Fu +5

Failures in large language models (LLMs) are often analyzed from a behavioral perspective, where incorrect outputs in factual question answering are commonly associated with missin…

cs.AI2026

Diagnosing Knowledge Conflict in Multimodal Long-Chain Reasoning

Jing Tang, Kun Wang, Haolang Lu +7

Multimodal large language models (MLLMs) in long chain-of-thought reasoning often fail when different knowledge sources provide conflicting signals. We formalize these failures und…

cs.AI2026

CSR-Bench: A Benchmark for Evaluating the Cross-modal Safety and Reliability of MLLMs

Yuxuan Liu, Yuntian Shi, Kun Wang +2

Multimodal large language models (MLLMs) enable interaction over both text and images, but their safety behavior can be driven by unimodal shortcuts instead of true joint intent un…

cs.AI2025

FiDeLiS: Faithful Reasoning in Large Language Model for Knowledge Graph Question Answering

Yuan Sui, Yufei He, Nian Liu +3

Large Language Models (LLMs) are often challenged by generating erroneous or hallucinated responses, especially in complex reasoning tasks. Leveraging Knowledge Graphs (KGs) as ext…

cs.AI2025

GuardReasoner-VL: Safeguarding VLMs via Reinforced Reasoning

Yue Liu, Shengfang Zhai, Mingzhe Du +9

To enhance the safety of VLMs, this paper introduces a novel reasoning-based VLM guard model dubbed GuardReasoner-VL. The core idea is to incentivize the guard model to deliberativ…