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cs.CL2026

Confidence Before Answering: A Paradigm Shift for Efficient LLM Uncertainty Estimation

Changcheng Li, Jiancan Wu, Hengheng Zhang +5

Reliable deployment of large language models (LLMs) requires accurate uncertainty estimation. Existing methods are predominantly answer-first, producing confidence only after gener…

cs.CL2026

When Perplexity Lies: Generation-Focused Distillation of Hybrid Sequence Models

Juan Gabriel Kostelec, Xiang Wang, Axel Laborieux +2

Converting a pretrained Transformer into a more efficient hybrid model through distillation offers a promising approach to reducing inference costs. However, achieving high-quality…

cs.CL2025

Teaching Language Models to Reason with Tools

Chengpeng Li, Zhengyang Tang, Ziniu Li +8

Large reasoning models (LRMs) like OpenAI-o1 have shown impressive capabilities in natural language reasoning. However, these models frequently demonstrate inefficiencies or inaccu…

cs.CL2025

CoRT: Code-integrated Reasoning within Thinking

Chengpeng Li, Zhengyang Tang, Ziniu Li +8

Large Reasoning Models (LRMs) like o1 and DeepSeek-R1 have shown remarkable progress in natural language reasoning with long chain-of-thought (CoT), yet they remain inefficient or…

cs.CL2025

START: Self-taught Reasoner with Tools

Chengpeng Li, Mingfeng Xue, Zhenru Zhang +7

Large reasoning models (LRMs) like OpenAI-o1 and DeepSeek-R1 have demonstrated remarkable capabilities in complex reasoning tasks through the utilization of long Chain-of-thought (…

cs.CL2024

DotaMath: Decomposition of Thought with Code Assistance and Self-correction for Mathematical Reasoning

Chengpeng Li, Guanting Dong, Mingfeng Xue +3

Large language models (LLMs) have made impressive progress in handling simple math problems, yet they still struggle with more challenging and complex mathematical tasks. In this p…