sklearn.utils.sparsefuncs.mean_variance_axis — scikit-learn 0.20.4 documentation (original) (raw)
sklearn.utils.sparsefuncs. mean_variance_axis(X, axis)[source]¶
Compute mean and variance along an axix on a CSR or CSC matrix
| Parameters: | X : CSR or CSC sparse matrix, shape (n_samples, n_features) Input data. axis : int (either 0 or 1) Axis along which the axis should be computed. |
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| Returns: | means : float array with shape (n_features,) Feature-wise means variances : float array with shape (n_features,) Feature-wise variances |