Reference documentation and code samples for the Vertex AI V1 API module Google::Cloud::AIPlatform::V1::FeatureView::IndexConfig::DistanceMeasureType.
The distance measure used in nearest neighbor search.
Constants
DISTANCE_MEASURE_TYPE_UNSPECIFIED
value: 0 Should not be set.
SQUARED_L2_DISTANCE
value: 1 Euclidean (L_2) Distance.
COSINE_DISTANCE
value: 2 Cosine Distance. Defined as 1 - cosine similarity.
We strongly suggest using DOT_PRODUCT_DISTANCE + UNIT_L2_NORM instead
of COSINE distance. Our algorithms have been more optimized for
DOT_PRODUCT distance which, when combined with UNIT_L2_NORM, is
mathematically equivalent to COSINE distance and results in the same
ranking.
DOT_PRODUCT_DISTANCE
value: 3 Dot Product Distance. Defined as a negative of the dot product.
