6823a1df2eb3ee12173d2e84c6e21870f1d6fd31,GPy/kern/_src/prod.py,Prod,gradients_X,#Prod#Any#Any#Any#,49

Before Change

    def gradients_X(self, dL_dK, X, X2=None):
        target = np.zeros(X.shape)
        for k1,k2 in itertools.combinations(self.parts, 2):
            target += k1.gradients_X(dL_dK*k2.K(X, X2), X, X2)
            target += k2.gradients_X(dL_dK*k1.K(X, X2), X, X2)
        return target

    def gradients_X_diag(self, dL_dKdiag, X):
        target = np.zeros(X.shape)

After Change

    def gradients_X(self, dL_dK, X, X2=None):
        target = np.zeros(X.shape)
        k = self.K(X,X2)*dL_dK
        for p in self.parts:
            target += p.gradients_X(k/p.K(X,X2),X,X2)
        return target

    def gradients_X_diag(self, dL_dKdiag, X):
        target = np.zeros(X.shape)

Instances