Module anchor_index

Anchor-space invariant index (RFC-011).

Indexes entities in anchor-projected space (ℝᴷ) where K = number of anchors. Vectors from DIFFERENT embedding models are directly comparable when projected through the same anchor set, enabling cross-model search and trajectory analysis.

Why flat scan?

K is typically 5-20 (number of clinical/semantic anchors). For 1M points in ℝ¹⁰, a flat scan with SIMD L2 takes ~10ms — fast enough for most use cases.

Structs

AnchorDriftReport

Drift report in anchor-projected space.

AnchorSetConfig

Configuration for an anchor set.

AnchorSpaceIndex

An index operating in anchor-projected space (ℝᴷ).

AnchorSpaceSnapshot 🔒

Enums

AnchorMetricSerde

Serializable anchor metric (mirrors AnchorMetric).