Kyungmin Lee


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On Sample-Efficient Code Generation
Hojae Han | Yu Jin Kim | Byoungjip Kim | Youngwon Lee | Kyungjae Lee | Kyungmin Lee | Moontae Lee | Kyunghoon Bae | Seung-won Hwang
Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing: Industry Track

Large language models often struggle to predict runtime behavior in code generation tasks, leading to a reliance on rejection sampling (best-of-n) to generate multiple code snippets then select the best. Our distinction is reducing sampling costs, without compromising generation quality. We introduce EFFICODE, a novel framework that prioritizes sampling on test problems that models can solve. We show how EFFICODE estimates solvability to optimize computational costs during multiple sampling. Based on empirical evidence, EFFICODE consistently demonstrates reduced sampling budgets while maintaining comparable code generation performance, especially when problems are challenging. In addition, utilizing EFFICODE to rank sampled code snippets also shows its effectiveness in answer code selection for reducing temporal costs, by not requiring any execution or test case generation.