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Author

Caiqi Zhang

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#artificial intelligence Preprint Oct 2026

VeriHarness: Scaling Agentic Verification for Long-Horizon Tasks

As LLM agents undertake increasingly complex, long-horizon tasks, verifying their outputs becomes increasingly challenging. We study how verification capability can be strengthened with a fixed base model, without access to reference answers or grading rubrics at test time. Repeated sampling yields multiple rollouts th...

Caiqi Zhang, Ru-Jun Han, Zifeng Wang et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Confidence Comes from Experience: Experiential Confidence Estimation from Reasoning to Agents

This work proposes XConf (eXperiential Confidence): estimating confidence together with the model's accumulated experience, and sees experiential confidence estimation as a new paradigm for future general-purpose confidence estimation.

Caiqi Zhang, Xiao-Chen Zhu, Chengzu Li et al. · 0 citations

When Calibration Rankings Reverse: Accuracy-Controlled Evaluation for Fair Comparison of LLMs

It is shown that raw global calibration metrics are not robust for cross-model comparison, and that fair calibration comparison requires accuracy-aware evaluation, and proposed ACE, an accuracy-controlled evaluation framework, is proposed.

Zhichao Yang, Caiqi Zhang, Ruihan Yang et al. · 1 citation

Beyond the Final Layer: Intermediate Representations for Better Multilingual Calibration in Large Language Models

This work conducts the first large-scale, systematic studies of multilingual calibration across six model families and over 100 languages, revealing that non-English languages suffer from systematically worse calibration.

Ej Zhou, Caiqi Zhang, Tiancheng Hu et al. · 10 citations · ⚡1

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