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Yutong Cheng

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#artificial intelligence Preprint Oct 2026

Small but Mighty: Test Suites as Improvement Signals for Self-Evolving Agents

A self-evolving agent rewrites its own harness and must decide which rewrites to keep, so its improvement signal is the check a rewrite has to pass. Verifying a rewrite by agent rollout is expensive and subjective, while executable checks such as the repository's own tests are too sparse to catch behavior-changing rewr...

Yu-Tong Cheng, Wei Cheng, Wen-Chao Yu et al. · 0 citations
#artificial intelligence Preprint Oct 2026

SpecForge: Recursive Self-Improvement for Coding Agents via Behavioral Specifications

Coding agents based on frozen language models can improve their performance by refining the external context they rely on, without updating model weights. We study recursive self-improvement through behavioral specifications: natural-language code documentation that describes the behavior of program entities and guides...

Yu-Tong Cheng, Hai-Feng Chen, Peng Gao et al. · 2 citations
#natural language process... Preprint Aug 2026

BEACON: Behavior-Anchored Cross-Source Knowledge Graph Construction for Cyber Threat Intelligence

BEACON is an LLM-driven framework for cross-source CTI knowledge graph construction that constructs and releases two human-annotated datasets from 34 sources and outperforms all baselines by at least 23% and 9%, respectively.

Chang-Ze Li, Yu-Tong Cheng, Tsania Camila Finnisa et al. · 0 citations

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