Search

Memex supports three search modes across multiple data levels.

Search Modes

Hybrid Ranking

Hybrid mode combines FTS and vector results using Reciprocal Rank Fusion (RRF):

score = Σ 1/(k + rank)

Where k=60 balances precision vs recall. Results from both engines are merged and re-ranked by combined score.

Search Levels

What gets searched depends on the level parameter. See Compact for details.

Fallback: If no results at current level, automatically tries the next level down.

Vector Search Requirements

Vector search requires:

1. Ollama with bge-m3 embedding model
2. Compact enabled to generate embeddings

Without these, only FTS mode is available.