20a3f495691b621165cc7fcce1bca917516edf9a,GPflow/ekernels.py,RBF,exKxz,#RBF#Any#Any#Any#,49

Before Change

        vec = tf.expand_dims(Z, 0) - tf.expand_dims(Xmum, 1)  // NxMxD

        rsm = tf.tile(tf.expand_dims(scalemat, 1), (1, M, 1, 1))  // Reshaped scalemat
        smIvec = tf.matrix_solve(rsm, tf.expand_dims(vec, 3))[:, :, :, 0]  // NxMxDx1
        q = tf.reduce_sum(smIvec * vec, [2])  // NxM

After Change

            tf.expand_dims(eye(tf.shape(Xmu)[1]), 0) + tf.reshape(lengthscales ** -2.0, (1, 1, -1)) * Xsigm
        )  // N

        vec = tf.expand_dims(tf.transpose(Z), 0) - tf.expand_dims(Xmum, 2)  // NxDxM
        smIvec = tf.matrix_solve(scalemat, vec)  // NxDxM
        q = tf.reduce_sum(smIvec * vec, [1])  // NxM

        addvec = tf.matmul(smIvec, Xsigmc, transpose_a=True) + tf.expand_dims(Xmup, 1)  // NxMxD

Instances