Author

Mark Harman

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Preprint Aug 2026

Ockhamareto: Pareto-Gated Segment-Level Credit Assignment for Concise Unit-Test Generation with Reinforcement Learning

Ockhamareto is introduced, a single-shot GRPO framework for unit-test generation and selection, based on the principles of Ockham's Razor and Pareto Optimality, and it is shown that the knee point of the optimal trade-off between efficiency and effectiveness on the Pareto front is not correlated with obvious more easil...

Dong Huang, Mark Harman, Jie M. Zhang et al. · 3 citations

Preprint Aug 2026

COMPAS: Difficulty-Aware Joint Search for Optimizing Code Generation

COMPAS (Code-generation Optimization over Models, Prompts, And Decoding Settings), a difficulty-aware method that learns group-specific quality-cost fronts through low-cost model selection and joint prompt-decoding search, then routes each test task to its matching front online without further search.

Jing-Zhi Gong, Jie M. Zhang, Gunel Jahangirova et al. · 0 citations