pyriemann.utils.distance.distance_harmonic¶

pyriemann.utils.distance.distance_harmonic(A, B, squared=False)¶

Harmonic distance between invertible matrices.

The harmonic distance between two invertible matrices \(\mathbf{A}\) and \(\mathbf{B}\) is:

\[d(\mathbf{A},\mathbf{B}) = \Vert \mathbf{A}^{-1} - \mathbf{B}^{-1} \Vert_F\]

Parameters:

Andarray, shape (…, n, n): First invertible matrices, at least 2D ndarray.
Bndarray, shape (…, n, n): Second invertible matrices, same dimensions as A.
squaredbool, default False: Return squared distance.

New in version 0.5.

Returns: