pyriemann.utils.mean.mean_harmonic¶
- pyriemann.utils.mean.mean_harmonic(X, sample_weight=None)¶
Harmonic mean of invertible matrices.
\[\mathbf{M} = \left( \sum_i w_i \ {\mathbf{X}_i}^{-1} \right)^{-1}\]- Parameters:
- Xndarray, shape (n_matrices, n, n)
Set of invertible matrices.
- sample_weightNone | ndarray, shape (n_matrices,), default=None
Weights for each matrix. If None, it uses equal weights.
- Returns:
- Mndarray, shape (n, n)
Harmonic mean.
See also