activity
20242026
most citedPerfCodeGen: Improving Performance of LLM Generated Code with Execution Feedback

1 citations · 1 across the 10 of their papers we have counts for

collaborators

10 papers

cs.SE2026

A Unified Issue Resolution Benchmark for Requirement Clarification, Planning, and Code Generation for Coding Agents

Xin Zhou, Chun Yong Chong, Kisub Kim +11

Large language model-powered coding agents are increasingly used to modify existing code repositories, for example, by adding features or fixing bugs. Yet existing repository-level…

cs.CV2026

GEB-Bench: Abstract Structures Told in Many Voices

Tong Zhang, Zhiyuan Shi, Yun Peng +1

Analogy allows models to apply relational knowledge from one situation to another. Benchmarks of equivalent representations test different ways of expressing the same underlying pr…

cs.CR2026

When LLM Defenses Backfire: Characterizing Safety, Performance, and Cost Trade-offs

Tong Zhang, Zexin Li, Simin Chen +1

Jailbreak defenses are essential for protecting large language models (LLMs), but they can also introduce secondary costs that weaken model utility. We present a systematic study o…

cs.LG2026

When Does Recurrence Become an Algorithm? Convergence Selection in Weight-Tied Looped Transformers

Tong Zhang, Junhao Hu, Yun Peng +1

When does a weight-tied looped transformer -- one block applied T times -- implement an actual algorithm? We answer with four findings from controlled populations on group word pro…

cs.SE2026

What Resolve Rate Hides: Trajectory Structure Diagnostics for Coding Agents

Rui Shu, Chun Yong Chong, Xin Zhou +6

Coding agents are ranked almost entirely by resolve rate: whether their final patch passes the target tests. Yet two agents can reach the same outcome through very different proces…

cs.AI2026

Retrieval-Infused Reasoning Sandbox: A Benchmark for Decoupling Retrieval and Reasoning Capabilities

Shuangshuang Ying, Zheyu Wang, Yunjian Peng +16

Despite strong performance on existing benchmarks, it remains unclear whether large language models can reason over genuinely novel scientific information. Most evaluations score e…

cs.SE2026

MulVul: Retrieval-augmented Multi-Agent Code Vulnerability Detection via Cross-Model Prompt Evolution

Zihan Wu, Jie Xu, Yun Peng +2

Large Language Models (LLMs) struggle to automate real-world vulnerability detection due to two key limitations: the heterogeneity of vulnerability patterns undermines the effectiv…

cs.SE2025

iCodeReviewer: Improving Secure Code Review with Mixture of Prompts

Yun Peng, Kisub Kim, Linghan Meng +1

Code review is an essential process to ensure the quality of software that identifies potential software issues at an early stage of software development. Among all software issues…

cs.SE2025

COFFE: A Code Efficiency Benchmark for Code Generation

Yun Peng, Jun Wan, Yichen Li +1

Code generation has largely improved development efficiency in the era of large language models (LLMs). With the ability to follow instructions, current LLMs can be prompted to gen…

cs.SE2024★ 1 cited

PerfCodeGen: Improving Performance of LLM Generated Code with Execution Feedback

Yun Peng, Akhilesh Deepak Gotmare, Michael Lyu +3

Large Language Models (LLMs) are widely adopted for assisting in software development tasks, yet their performance evaluations have narrowly focused on the functional correctness o…