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cs.CL2025

Learning from the Best, Differently: A Diversity-Driven Rethinking on Data Selection

Hongyi He, Xiao Liu, Zhenghao Lin +6

High-quality pre-training data is crutial for large language models, where quality captures factual reliability and semantic value, and diversity ensures broad coverage and distrib…

cs.CL2025

RAR: Retrieval-Augmented Medical Reasoning via Thought-Driven Retrieval

Kaishuai Xu, Wenjun Hou, Yi Cheng +1

Large Language Models (LLMs) have shown promising performance on diverse medical benchmarks, highlighting their potential in supporting real-world clinical tasks. Retrieval-Augment…

cs.CL2025

Towards Dynamic Theory of Mind: Evaluating LLM Adaptation to Temporal Evolution of Human States

Yang Xiao, Jiashuo Wang, Qiancheng Xu +5

As Large Language Models (LLMs) increasingly participate in human-AI interactions, evaluating their Theory of Mind (ToM) capabilities - particularly their ability to track dynamic…

cs.CL2025

Learning to Align Multi-Faceted Evaluation: A Unified and Robust Framework

Kaishuai Xu, Tiezheng Yu, Wenjun Hou +6

Large Language Models (LLMs) are being used more and more extensively for automated evaluation in various scenarios. Previous studies have attempted to fine-tune open-source LLMs t…

cs.CL2025

Subtle Errors in Reasoning: Preference Learning via Error-injected Self-editing

Kaishuai Xu, Tiezheng Yu, Wenjun Hou +7

Large Language Models (LLMs) have exhibited strong mathematical reasoning prowess, tackling tasks ranging from basic arithmetic to advanced competition-level problems. However, fre…

cs.CL2025

Sigma: Differential Rescaling of Query, Key and Value for Efficient Language Models

Zhenghao Lin, Zihao Tang, Xiao Liu +31

We introduce Sigma, an efficient large language model specialized for the system domain, empowered by a novel architecture including DiffQKV attention, and pre-trained on our metic…