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Pengyu Nie

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#artificial intelligence Preprint Sep 2026

Compile by Training: Turning Natural-Language Specifications into Local Neural Functions

Many recurring text functions are easy to describe but difficult to implement with rules, while calling a large remote model for every input introduces repeated cost, latency, and dependency on a provider. We present compile by training, which turns a natural-language specification into a reusable neural function. At c...

Yun-Tian Deng, Peng-Yu Nie, Stuart M. Shieber · 0 citations
Jul 2026

What Makes a Good Bug Report for an AI Agent?

It is found that a good bug report for an agent overlaps with, but is not identical to, a good report for a human: agents benefit most from concrete, executable, and well-localized information, whereas some qualities long emphasized for human readers, such as natural language steps to reproduce and readable description...

Lara Khatib, N. Mathews, M. Nagappan et al. · 2 citations · ⚡1
Preprint Jul 2026

TestEvo-Bench: An Executable and Live Benchmark for Test and Code Co-Evolution

TestEvo-Bench is a benchmark of test and code co-evolution tasks mined from software repositories, with two tracks: in test generation, the agent shall write new tests to capture the new software behavior; in test update, the agent shall adapt failing existing tests to the changed software behavior.

J. Wang, Kaiyuan Wang, Pengyu Nie · 1 citation
Book Open access Jul 2026

When AI Coding Assistants Leak Training Data: A Study of LLM Memorization in Code Generation

It is confirmed that memorization persists in modern LLMs and is influenced more by a complex interplay of training domain, dataset composition, architectural choices, and content characteristics, rather than parameter count alone.

Xiaoyu Cheng, Kundi Yao, Pengyu Nie et al. · 0 citations

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