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CODENS: Transforming Code Changes into Living, Accessible, and Queryable Documentation

2026-07-20 10:13:23
Abdelhak Kelious, Chyrine Tahri, Eliot Bardet
arXiv_AI
             
Abstract

Maintaining up-to-date code documentation is difficult in fast-moving repositories because design knowledge is scattered across source files and pull requests. We present CODENS , a system that turns pull requests into living, accessible, and queryable documentation for production codebases. CODENS incrementally builds a typed software knowledge graph from pull requests, enriches components through schema-driven semantic extraction, derives typed relations between them, and exposes the resulting knowledge through three retrieval modes, including agent-guided graph traversal for repository-level question answering. The system also preserves semantic change history across pull requests and integrates both answer-quality and operational evaluation metrics. We evaluate CODENS on a client Ruby on Rails project in production. Results show that CODENS produces highly relevant and well-grounded answers, while qualitative feedback highlights a remaining challenge in concise, documentation-oriented synthesis.

Abstract (translated)

URL

https://arxiv.org/abs/2607.18356

PDF

https://arxiv.org/pdf/2607.18356.pdf

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