sklearn.metrics.pairwise.laplacian_kernel — scikit-learn 0.20.4 documentation (original) (raw)

sklearn.metrics.pairwise. laplacian_kernel(X, Y=None, gamma=None)[source]¶

Compute the laplacian kernel between X and Y.

The laplacian kernel is defined as:

K(x, y) = exp(-gamma ||x-y||_1)

for each pair of rows x in X and y in Y. Read more in the User Guide.

New in version 0.17.