File Synchronization And Change Detection For Incremental Index Updates

via “incremental indexing and graph update with change detection”

A modular graph-based Retrieval-Augmented Generation (RAG) system

Unique: Implements change detection at the document level with selective re-extraction and graph merging, avoiding full re-indexing while maintaining graph consistency. Preserves entity IDs across updates, enabling stable references and reducing community reassignments.

vs others: More efficient than full re-indexing for large corpora with frequent updates, and more sophisticated than naive append-only approaches that don't handle entity deduplication or community optimization.