GraphRAG for CTOs: three retrieval patterns and a four-week test to decide
JeremyCMorgan · x · 2026-11-12
Semantic Innovations published a CTO-oriented guide on when knowledge graphs beat vector search. Plain RAG fails on three question types: multi-hop reasoning (supplier→part→product→recall chains), aggregation queries needing full fact sets, and precise entity identity across documents. GraphRAG closes this gap but adds hidden costs most architecture diagrams ignore: graph construction, synchronization, and query latency. The article breaks down three retrieval patterns and proposes a four-week test to determine whether graph infrastructure actually improves multi-hop answers on your own data.
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