Entity resolution breakdown for GraphRAG builders: embedding similarity does not establish identity
JeremyCMorgan · x · 2026-11-12
A knowledge graph with duplicate identities can confidently return wrong facts. The linked reference disentangles the three subproblems of entity resolution — entity disambiguation, record linkage, and canonicalization — tracing the concept back to the 1969 Fellegi-Sunter probabilistic record linkage model. It clarifies how ER stabilizes identity mapping across heterogeneous sources in knowledge graphs, LLMs and databases, and why embedding similarity alone doesn't establish identity — a useful grounding for GraphRAG builders.
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