ProjectionFactory.
multivariate_normal
Multivariate normal distribution
input_dim (int) – dimension of the inputs.
n_features (int) – dimension of the RKHS.
params (list) – the input_dim dimensioanl parameters are the
diagonal of the covariance matrix of the distribution. The mean is set to the 0 vector. :return: n_features-by-input_dim projection matrix. :rtype: numpy.ndarray.