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Kang Liu

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Preprint Aug 2026

SFT Conflicts, RL Coexists: A Theoretical and Empirical Analysis of Multi-Task Learning for LLMs

Supervised Fine-Tuning (SFT) and Reinforcement Learning (RL) exhibit fundamentally different behaviors in enhancing multi-task reasoning for large language models (LLMs). Our preliminary experiments revealed a phenomenon: SFT suffers from severe task conflicts under multi-stage training, whereas RL enables stable coexi...

Kejian Zhu, Zhuo-Ran Jin, Shangqing Tu et al. · 0 citations
Jul 2026

AREX: Towards a Recursively Self-Improving Agent for Deep Research

This work introduces AREX, a family of Recursively Self-Improving (RSI) deep research agents that substantially outperforms comparable-scale baselines and remains competitive with models using substantially more activated parameters.

Shuqi Lu, Chaofan Li, Kun Luo et al. · 2 citations · ⚡1
#natural language process... Preprint Aug 2026

SwarmBench: Can Large Language Models Act as Agent Swarm Orchestrators?

SwarmBench is proposed, a benchmark that evaluates model performance from multiple perspectives, including accuracy, efficiency, cost, and process quality, and SwarmExp is proposed, a simple yet effective method based on experience extraction and experience replay, which consistently improves the orchestration performa...

Jin Gao, Zhuoran Jin, Tianyi Men et al. · 0 citations
Preprint Aug 2026

RuleWeaver: Benchmarking Rule-Centered Scenario Reasoning for Large Language Models

RuleWeaver is introduced, a benchmark construction framework for evaluating rule-centered scenario reasoning that starts from corpus-derived IF-THEN Meta Rules, progressively augments them into complex rules, and composes these rules into rule-centered scenario QA instances.

Bo-Han Yu, Shi-Yang Li, Pengfei Cao et al. · 0 citations
Preprint Aug 2026

Beyond Factual Knowledge: Benchmarking and Learning Step-Level Procedural Rule Reasoning in Large Language Models

DynaRule is proposed, an end-to-end framework that injects the given rules into the KV cache and turns retrieval into an internal, learnable, step-wise process, and can re-attend to the most relevant rules at each step, dynamically replacing outdated ones to support more stable multi-step reasoning.

Bo-Han Yu, Pengfei Cao, Chen Han et al. · 1 citation
Preprint Aug 2026

Quantization Degradation in Large Language Models: A Signal-Noise Perspective

This work systematically study weight-only post-training quantization across bit-widths, quantization methods, model scales and downstream tasks and establishes that quantization degradation is governed by how errors are introduced at the source and how they accumulate across the network.

Chen-Xi Zhou, Pengfei Cao, Jin Ye et al. · 0 citations

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