A vector search returns poor results. Increasing which IVFFlat parameter improves recall without rebuilding the index?
- A lists
- B m
- C ivfflat.probes (correct answer)
- D ef_construction
Shortcut: probes=N at query time controls how many inverted lists are searched. Higher probes = better recall. This is a session-level setting requiring no index rebuild.
SET ivfflat.probes=N at query time controls how many inverted lists are searched. Higher probes = better recall. This is a session-level setting requiring no index rebuild.