Infinite-Instruct: Synthesizing Scaling Code Data with Bidirectional Synthesis & Static Verification

ACL ARR 2025 May Submission3045 Authors

Abstract: Traditional code instruction data synthesis methods suffer from limited diversity and poor logic. We introduce Infinite-Instruct, an automated framework for synthesizing high-quality question-answer pairs, designed to enhance the code generation capabilities of large language models (LLMs). The framework focuses on improving the internal logic of synthesized problems and the quality of synthesized code. First, "Reverse Construction" transforms code snippets into diverse programming problems. Then, through "Backfeeding Construction," keywords in programming problems are structured into a knowledge graph to reconstruct them into programming problems with stronger internal logic. Finally, a cross-lingual static code analysis pipeline filters invalid samples to ensure data quality. Experiments show that on mainstream code generation benchmarks, our fine-tuned models achieve an average performance improvement of 21.70\% on 7B-parameter models and 36.95\% on 32B-parameter models. Using less than one-tenth of the instruction fine-tuning data, we achieved performance comparable to the Qwen-2.5-Coder-Instruct. Infinite-Instruct provides a scalable solution for LLM training in programming. We open-source the datasets used in the experiments, including both unfiltered versions and filtered versions via static analysis. The data are available at ~\url{https://anonymous.4open.science/r/Infinite-Instruct-dataset-DF90}

Paper Type: Long

Research Area: Language Modeling

Research Area Keywords: code models; fine-tuning;prompting

Contribution Types: Data resources, Data analysis

Languages Studied: English

Submission Number: 3045