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DistanceMeasureType(value)
The distance measure used in nearest neighbor search.
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)
The distance measure used in nearest neighbor search.
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.