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Xu Chu

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#machine learning Preprint Sep 2026

When Sparse Reward Meets Dense Distillation: Training Dynamics of On-Policy Distillation

The cross-signal NTK is introduced, a token-level statistic that measures the alignment between reward and distillation gradients at position n and an empirical threshold beyond which naive mixing can lead to persistent training collapse is revealed.

Xin-Ke Jiang, Tao Feng, Zhi-Bang Yang et al. · 0 citations
#machine learning Preprint Sep 2026

GenMem: Generative Symbolic Memory for Self-Evolving Harness

GenMem is presented, which reformulates memory management as generative symbolic addressing, a multi-level discrete token tuple drawn from a Cartesian-product address space that factorizes a million-scale sparse memory space using fewer than one hundred discrete symbols.

Xin-Ke Jiang, Tao Feng, Wei-Xuan Xu et al. · 0 citations
Preprint Aug 2026

LoongReflect: Boosting Long-Horizon Reflection in Search Agents via Global Perspective Distillation

LoongReflect is proposed, a training framework that formulates reflection as a memory-control policy over a reversible trajectory tree using explicit reflect and backtrack actions and demonstrates consistent improvements over outcome-only reinforcement learning and self-distillation baselines.

Zhi-Xin Zhang, Xin-Ke Jiang, Zhi-Bang Yang et al. · 0 citations
Open access Sep 2026

Information retrieval in pre-hospital care with visualization-oriented natural-language interface via LLMs

A novel framework that leverages the language understanding and code generation ability of Large Language Models (LLMs) to build an information retrieval system with Visualization-oriented Natural-language-based Inter-faces (V-NLI).

Xin Gao, Zheng-Ye Zhu, Xin-Yu Ma et al. · 0 citations
Preprint Aug 2026

Harness-RL: Black-Box Reinforcement Learning with Action-Args Decoupling for Central-Agent Multi-Agent Harnesses

Harness-RL is introduced, a structured reinforcement learning framework that combines Conflict-Aware Policy Optimization (CAPO) with interface-level black-box trajectory construction and supports both central-only and joint multi-agent training.

Xin-Ke Jiang, Zhi-Xin Zhang, Zhi-Bang Yang et al. · 1 citation

ScaffoldAgent: Utility-Guided Dynamic Outline Optimization for Open-Ended Deep Research

ScaffoldAgent is proposed, a utility-guided dynamic outline optimization framework for OEDR that models outline evolution as a structured decision process with three operations: Expansion, Contraction, and Revision, enabling controlled updates to the report scaffold.

Zhibang Yang, Xinke Jiang, Yuzhen Xiao et al. · 1 citation
#artificial intelligence Preprint Aug 2026

AgenticRag-R1: Agentic Reinforcement Learning with Stack Memory for Multi-Step Reasoning, Retrieval and Memorizing

This work proposes AgenticRag-R1, a RL framework that deeply integrates reasoning, retrieval, and memory via a memory stack and fine-grained action space, supported by hierarchical action-aware rewards and an information-aware trajectory rejection strategy to enable effective long-horizon learning.

Xin-Ke Jiang, Yue Fang, Zhi-Bang Yang et al. · 2 citations

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