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cs.CL2026

Do LLMs Know Tool Irrelevance? Demystifying Structural Alignment Bias in Tool Invocations

Yilong Liu, Xixun Lin, Pengfei Cao +3

Large language models (LLMs) have demonstrated impressive capabilities in utilizing external tools. In practice, however, LLMs are often exposed to tools that are irrelevant to the…

cs.CL2026

MuVaC: A Variational Causal Framework for Multimodal Sarcasm Understanding in Dialogues

Diandian Guo, Fangfang Yuan, Cong Cao +5

The prevalence of sarcasm in multimodal dialogues on the social platforms presents a crucial yet challenging task for understanding the true intent behind online content. Comprehen…

cs.CL2026

LFD: Layer Fused Decoding to Exploit External Knowledge in Retrieval-Augmented Generation

Yang Sun, Zhiyong Xie, Lixin Zou +7

Retrieval-augmented generation (RAG) incorporates external knowledge into large language models (LLMs), improving their adaptability to downstream tasks and enabling information up…

cs.CL20251 cited

MAD-Fact: A Multi-Agent Debate Framework for Long-Form Factuality Evaluation in LLMs

Yucheng Ning, Xixun Lin, Fang Fang +1

The widespread adoption of Large Language Models (LLMs) raises critical concerns about the factual accuracy of their outputs, especially in high-risk domains such as biomedicine, l…

cs.CL2025

Enhancing Large Language Model for Knowledge Graph Completion via Structure-Aware Alignment-Tuning

Yu Liu, Yanan Cao, Xixun Lin +3

Knowledge graph completion (KGC) aims to infer new knowledge and make predictions from knowledge graphs. Recently, large language models (LLMs) have exhibited remarkable reasoning…

cs.CL2025

Reliably Bounding False Positives: A Zero-Shot Machine-Generated Text Detection Framework via Multiscaled Conformal Prediction

Xiaowei Zhu, Yubing Ren, Yanan Cao +3

The rapid advancement of large language models has raised significant concerns regarding their potential misuse by malicious actors. As a result, developing effective detectors to…