Returns cosine similarity between x1 and x2, computed along dim.
nnf_cosine_similarity(x1, x2, dim = 2, eps = 1e-08)(Tensor) First input.
(Tensor) Second input (of size matching x1).
(int, optional) Dimension of vectors. Default: 2
(float, optional) Small value to avoid division by zero. Default: 1e-8
$$ \mbox{similarity} = \frac{x_1 \cdot x_2}{\max(\Vert x_1 \Vert _2 \cdot \Vert x_2 \Vert _2, \epsilon)} $$