Author

Lei Chen

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#artificial intelligence Preprint Nov 2025

Superficial Reflection or Genuine Thought? A Fine-Grained Cognitive Analysis of Large Reasoning Models

Motivated by the observed human-like behaviours in Large Reasoning Models (LRMs), this paper introduces a comprehensive taxonomy to characterise atomic reasoning steps and analyse the reasoning behaviours of LRMs. Grounded in human cognitive processes, we propose a taxonomy comprising five groups and seventeen categori...

Yu-Xiang Chen, Zuohan Wu, Ziwei Wang et al. · 0 citations

Preprint Aug 2026

TailSieve: Partial-Rollout-Guided Tail Routing for LLM Rollouts

TailSieve, a partial-rollout-guided framework that jointly controls tail routing and replica allocation for LLM rollouts, and shows that makespan-optimal routing in the long-tail regime combines tail isolation with load balancing, and that a simple top-k policy closely approximates this offline optimum.

Tianqi Xu, Lu Lv, Hao-Yang Huang et al. · 3 citations · ⚡1