Class DistanceMeasureType (1.51.0)

DistanceMeasureType(value)
    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 (3):
    Dot Product Distance. Defined as a negative
    of the dot product.

Enums
Name Description
DISTANCE_MEASURE_TYPE_UNSPECIFIED Should not be set.
SQUARED_L2_DISTANCE Euclidean (L_2) Distance.
COSINE_DISTANCE Cosine Distance. Defined as 1 - cosine similarity.

Methods

DistanceMeasureType

DistanceMeasureType(value)
    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 (3):
    Dot Product Distance. Defined as a negative
    of the dot product.