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Rui-Xuan Wang

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Preprint Aug 2026

PWLR: Pairwise Witness Local Rejection for Boundary-Aware Out-of-Distribution Detection

This work proposes Pairwise Witness Local Rejection (PWLR), which uses an MLLM offline to describe visible local cues that favor one ID class over a specific rival class, and consistently improves strong vision-language baselines across multiple backbones.

Chengyao Jia, Rui-Xuan Wang · 0 citations
Preprint Aug 2026

TruthLens: Object Hallucination Detection via Self-Evaluating Truthfulness Scores in LVLMs

TruthLens is a self-evaluation framework that teaches the LM head to expose a per-object truthfulness signal without any auxiliary model or additional inference cost, and generalizes effectively to benchmarks with substantially larger label spaces.

Yan-Qi Wu, Run-He Lai, Xin-Hua Lu et al. · 0 citations

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