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Weifeng Sun

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Preprint Aug 2026

How Reasoning Shapes Social Bias in LLM-Generated Code?

Large language models (LLMs) are increasingly used for code generation, yet generated programs may exhibit social bias through unfair or differential treatment of sensitive demographic attributes. While prior work mainly studies direct code generation, bias in reasoning-based generation remains underexplored. We conduc...

Wei-Feng Sun, Jie-Ke Shi, Zhou Yang et al. · 0 citations
Preprint Aug 2026

Lossless Tensor Compression as Program Synthesis

A typed domain-specific language that captures recurring tensor structures, such as repeated regions and floating-point fields, through a set of reversible operators, is designed, which formulates lossless tensor compression as program synthesis.

Jie-Ke Shi, Jun-Da He, Wenjia Jiang et al. · 0 citations
Preprint Aug 2026

AgentChaos: Chaos Engineering for Agent Systems via Programmatic Fault Injection

Agent systems rely on LLM APIs for every response, but these APIs can return server errors, truncated responses, or corrupted content that propagates through downstream agents and causes task failure. Evaluating robustness under these faults is crucial for reliable deployment. Existing fault injection methods are offli...

Gou Tan, Zhensu Sun, Jie-Ke Shi et al. · 2 citations
Preprint Jul 2026

ReProAgent: Tool-Augmented Multi-Stage Agentic Generation of Bug Reproduction Tests from Issue Reports

ReProAgent is a multi-stage agent framework for reproduction test generation from issue reports that decomposes the task into four agent stages: bug localization, root cause analysis, test planning, and test generation, and generalizes across multiple backbone LLMs.

Quanjun Zhang, Yi Zheng, Ye Shang et al. · 1 citation
Preprint Open access Aug 2026

Understanding and Improving Model Editing for Secure Code Generation

The first systematic study of model editing as a model-level hardening mechanism for secure code generation is conducted, evaluating 3 state-of-the-art editing methods across diverse LLM families and comparing them with CoSec, a representative inference-time approach, focusing on security, robustness, generalization, a...

Wei-Feng Sun, Quan-Jun Zhang, Yuchen Chen et al. · 0 citations
Jul 2026

SciCodePile: A 128GB Corpus and Executable Benchmark for Challenging Scientific Code Generation

Large language models (LLMs) excel at general-purpose code generation, yet how well they handle scientific code remains an open question. Existing datasets and benchmarks are limited in scale, domain coverage, or executable verification, leaving the true gap between current LLMs and reliable scientific code generators...

Weifeng Sun, Ye Fan, Yuchen Chen et al. · 0 citations

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