TAG
#HNSW
2026-10 2 posts
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What Happens to HNSW Recall After Adding Vectors? (1M+1M)
A 1M+1M insertion study in pgvector and Qdrant, comparing insertion order, batch boundaries, and fresh indexes. Segment telemetry and version-pinned code help explain their different behavior.
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What Happens to HNSW Recall After Adding Vectors? (10K+10K)
A small pgvector and Qdrant experiment compares recall before and after vector insertion, then against fresh indexes over the same final data.
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