Overcoming RAG Limitations with Knowledge Graphs: Ontology-Based Retrieval Systems
Vector search alone isn't enough. Upgrade your RAG system with Knowledge Graphs that understand entity relationships.
Overcoming RAG Limitations with Knowledge Graphs: Ontology-Based Retrieval Systems
Vector search alone isn't enough. Upgrade your RAG system with Knowledge Graphs that understand entity relationships.
TL;DR
- RAG Limitations: Vector similarity alone can't capture entity relationships or hierarchies
- Ontology: A schema that defines concepts and their relationships (RDF, OWL)
- Knowledge Graph: Stores actual data as triples based on an ontology
- Hybrid Search: Combine vector search + graph queries for more accurate context
1. The Hidden Limitations of RAG
The Blind Spots of Vector Search
A typical RAG pipeline:
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