Terminology

Terminology & Numerics

This page collects key terms, model-derived numeric constants, and policy-derived constants.

Key Terms

• Medoid — an existing memory node selected as a cluster representative.
• Centroid — a computed average vector (not necessarily a real node).
• Metroid — a transient search construct { m1, m2, c } used during retrieval.
• Hotpath — the in-memory resident index of active nodes.

Model-Derived Numerics

These values are derived from the embedding model profile (not hardcoded):

• Embedding dimensionality
• Matryoshka protected dimension boundary
• Query context length limits

Policy-Derived Constants

Policy constants (e.g. fanout caps, quota ratios) are defined in the code and kept in sync with the design.

For the authoritative source of policy constants, see core/HotpathPolicy.ts.