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Wei Yang

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Preprint Oct 2026

Beyond Confidence: Rethinking Uncertainty Calibration in Deep Code Models

Deep learning models have shown significant promise in code-related tasks. While confidence calibration techniques have been proposed to improve model reliability, their effectiveness in real-world tasks with strict accuracy requirements remains uncertain. In this paper, we investigate two key questions: first, whether...

Ravishka Rathnasuriya, Wei Yang · 0 citations
#artificial intelligence Preprint Oct 2026

Characterizing Overconfident Failure in LLM-Based Code Generation

Large language models (LLMs) are increasingly used for automated code generation, but generated programs can appear syntactically plausible while still failing execution-based correctness checks. Existing validation methods, such as testing and program analysis, remain essential but are often incomplete, costly, or app...

Ravishka Rathnasuriya, Wei Yang · 0 citations
#artificial intelligence Preprint Sep 2026

RankBuffer: Efficient Ranking-Based Rewards for Open-Ended Generation

RankBuffer is introduced, which maintains an ordered, query-specific buffer of previously judged responses as a reusable quality scale that achieves nearly on-par performance with the strongest ranking-based reward baseline while substantially reducing judging cost.

Zi-Xuan Yang, Yi-Qun Chen, Qi Liu et al. · 0 citations
#artificial intelligence Preprint Aug 2026

WatchPoint: Executable User Feedback for Real-World Agentic Web Development

WatchPoint is introduced, a simulated-user system that mimics real developer behavior by generating and executing diagnostic scripts against the running application, producing structured observations that guide the coding model's retry and identifies a pattern of capability gaps that governs when simulated-user feedbac...

Guanqun Yang, Wei Yang, Xueqing Liu · 0 citations

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