sklearn.metrics.pairwise.polynomial_kernel¶
- sklearn.metrics.pairwise.polynomial_kernel(X, Y=None, degree=3, gamma=None, coef0=1)[source]¶
Compute the polynomial kernel between X and Y:
K(X, Y) = (gamma <X, Y> + coef0)^degree
Parameters: X : ndarray of shape (n_samples_1, n_features)
Y : ndarray of shape (n_samples_2, n_features)
coef0 : int, default 1
degree : int, default 3
Returns: Gram matrix : array of shape (n_samples_1, n_samples_2)