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Ze-Jian Xie

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#machine learning Preprint Sep 2026

On the Pitfalls of Verbalized Confidence Priors for Calibrating Large Reasoning Models

Large reasoning models (LRMs) often suffer from overconfidence when expressing their uncertainty. Confidence-aware reinforcement learning (RL) offers a promising way to optimize calibration. However, it relies on on-policy rollouts and is thus constrained by the model's pre-RL confidence distribution, which we term con...

Shuo-Yuan Wang, Bei-Er Luo, Hao Zeng et al. · 0 citations
#machine learning Preprint Sep 2026

Anytime-Valid LLM Leaderboards via Benchmark-weighted and Block-Factorized e-Processes

BB-EDGE (Benchmark-Weighted and Block-Factorized e-processes for Directed Graph Evaluation), a principled framework that represents an LLM leaderboard as a directed graph whose edges certify pairwise mean-performance advantages, with anytime-valid family-wise error rate (FWER) control, is proposed.

Hong-Fu Gao, Song-Xin Zhang, Ze-Jian Xie et al. · 0 citations
#artificial intelligence Preprint Sep 2026

AtomEgo: Exploring Ego-Robot Integration for Embodied Foundation Model Pretraining

AtomEgo is presented, a systematic study of ego--robot co-training supported by a curated corpus of approximately 2,659 hours and a scalable data processing pipeline that reveals a simple principle: Data Scale * Alignment Quality -->Capability Gain; egocentric data can improve generalization, but their value depends on...

Di Wu, Dong-Chen Zheng, Jun-He Sheng et al. · 0 citations

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