APIGen: Generative API Method Recommendation
CoRR(2024)
摘要
Automatic API method recommendation is an essential task of code
intelligence, which aims to suggest suitable APIs for programming queries.
Existing approaches can be categorized into two primary groups: retrieval-based
and learning-based approaches. Although these approaches have achieved
remarkable success, they still come with notable limitations. The
retrieval-based approaches rely on the text representation capabilities of
embedding models, while the learning-based approaches require extensive
task-specific labeled data for training. To mitigate the limitations, we
propose APIGen, a generative API recommendation approach through enhanced
in-context learning (ICL). APIGen involves two main components: (1) Diverse
Examples Selection. APIGen searches for similar posts to the programming
queries from the lexical, syntactical, and semantic perspectives, providing
more informative examples for ICL. (2) Guided API Recommendation. APIGen
enables large language models (LLMs) to perform reasoning before generating API
recommendations, where the reasoning involves fine-grained matching between the
task intent behind the queries and the factual knowledge of the APIs. With the
reasoning process, APIGen makes recommended APIs better meet the programming
requirement of queries and also enhances the interpretability of results. We
compare APIGen with four existing approaches on two publicly available
benchmarks. Experiments show that APIGen outperforms the best baseline CLEAR by
105.8
recommendation in terms of SuccessRate@1. Besides, APIGen achieves an average
49.87
GPT-4 in method-level API recommendation regarding the SuccessRate@3 metric.
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