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Yiming Zeng

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#artificial intelligence Preprint Sep 2026

GroupMask: Layer-Adaptive Group-wise Sparsity for Semi-Structured LLM Pruning

GroupMask is proposed, which generates the group selectors of all layers with a lightweight hypernetwork, relaxes them with a Gumbel-Sigmoid parameterization and a straight-through estimator, and learns them through sparsity-budget regularization and self-distillation while keeping the pretrained weights frozen.

Zhen-Gao Li, Shuo-Qiu Li, Xiao-Fan Zhang et al. · 0 citations
#artificial intelligence Preprint Sep 2026

TraceDance: An Automated System for Building Agent Behavior Benchmarks from Real-World Agent Deployment Traces

An agent can complete a task while exhibiting undesirable behavior during execution. Developers need tests for the specific behaviors encountered in deployment, beyond fixed benchmark suites. We present TraceDance, an agent system that constructs targeted benchmarks from deployment traces for user-specified undesirable...

De-Hai Min, Dao-An Zhang, Yiming Zeng et al. · 0 citations
Preprint Aug 2026

HyperFL: Query-Adaptive Representation Learning for Software Fault Localization

Software fault localization identifies the code locations responsible for reported issues and is a fundamental step toward automated debugging and program repair. Recent retrieval-based approaches formulate fault localization as a dense retrieval task by learning a shared embedding space between issue reports and sourc...

Shuai Shao, Yiming Zeng, Yu Zhao et al. · 0 citations
Preprint Aug 2026

ConFL: Explainable Concurrent Fault Localization via Hierarchy-Guided LLM Reasoning

Experiments on real-world concurrent bugs from eight large-scale Java projects show that ConFL significantly outperforms state-of-the-art IR-based and LLM-based baselines, achieving an MRR of 0.503 and a MAP of 0.486.

Shuai Shao, Dingbang Wang, Yiming Zeng et al. · 0 citations
#natural language process... Preprint Aug 2026

SPEAR: Distilling Domain-Adaptive Reasoning Skeletons via Sequential Symbolic Alignment in Reinforcement Learning

This work introduces SPEAR (Symbolic Process Evaluation and Alignment Reward), a training-free and plug-and-play process reward method for sequence-level on-policy distillation that effectively bridges the reasoning gap between student and teacher models via sequence-level distillation with efficient dense process rewa...

Zhuo-Chun Li, Yuelyu Ji, Yiming Zeng et al. · 0 citations
#natural language process... Preprint Aug 2026

MoEGen: Mixture-of-Experts for Instance-Adaptive LoRA Generation

This work proposes MoEGen, an adaptation framework that shifts MoE-based PEFT from expert selection to expert-conditioned parameter generation, and decouples expert capacity from adapter storage while enabling instance-conditioned adaptation.

Yiming Zeng, Lei Lu, Zexin Li et al. · 1 citation · ⚡1

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