Cosine similarity between two equal-length vectors, in [-1, 1]. Returns 0 for a zero-magnitude vector (direction is undefined) instead of NaN, so a degenerate embedding can't poison a similarity ranking with a NaN that sorts unpredictably.
Cosine similarity between two equal-length vectors, in [-1, 1]. Returns 0 for a zero-magnitude vector (direction is undefined) instead of NaN, so a degenerate embedding can't poison a similarity ranking with a NaN that sorts unpredictably.