pyriemann.datasets.make_outliers

pyriemann.datasets.make_outliers(n_matrices, mean, sigma, outlier_coeff=10, random_state=None)

Generate outlier matrices.

Generate matrices that are outliers for a given Riemannian Gaussian distribution with fixed mean and dispersion.

Parameters:

n_matricesint

Number of matrices to generate.

meanndarray, shape (n_dim, n_dim)

Center of the Riemannian Gaussian distribution.

sigmafloat

Dispersion of the Riemannian Gaussian distribution.

outlier_coeff: float, default=10

Coefficient determining how to define an outlier, i.e. how many times the sigma parameter its distance to the mean should be.

random_stateint | RandomState instance | None, default=None

Pass an int for reproducible output across multiple function calls.

Returns:

outliersndarray, shape (n_matrices, n_dim, n_dim)

Set of generated outlier matrices.

Notes

Added in version 0.3.