AION
Research paperLarge Language Models1 source · Oct 8, 2026

MAP4CS: A Multi-dimensional Data Pruning Framework for Efficient Code Retriever Fine-tuning

To address these challenges, we propose MAP4CS (Multi-dimensional Awareness Pruning for Code Search), an adaptive data pruning framework.

Key points

  • Retrieval-Augmented Generation (RAG) has become a cornerstone in software engineering for enhancing Large Language Models (LLMs) with domain-specific knowledge.
  • However, adapting retrievers to evolving code repositories remains challenging due to the noise and redundancy inherent in massive code corpora.
  • MAP4CS identifies a small, high-quality core subset by integrating syntactic structure, semantic diversity, and distributional representation, followed by a rigorous rule-based filtering pipeline.
  • Furthermore, linguistic analysis reveals an adaptive optimization mechanism: MAP4CS automatically functions as a de-duplicator for redundant corpora and a denoiser for chaotic ones, constructing a training corpus that is both lexically diverse and information-dense.

Sources (1)

  • [1]MAP4CS: A Multi-dimensional Data Pruning Framework for Efficient Code Retriever Fine-tuning
    arXiv (AI, ML, NLP, CV, robotics, multi-agent) · Oct 8, 11:25 AM
    To address these challenges, we propose MAP4CS (Multi-dimensional Awareness Pruning for Code Search), an adaptive data pruning framework.
    Retrieval-Augmented Generation (RAG) has become a cornerstone in software engineering for enhancing Large Language Models (LLMs) with domain-specific knowledge.

Extractive summary: sentences quoted from the sources.