sklearn.utils.sparsefuncs.inplace_row_scale(X, scale)[source]

Inplace row scaling of a CSR or CSC matrix.

Scale each row of the data matrix by multiplying with specific scale provided by the caller assuming a (n_samples, n_features) shape.

X : CSR or CSC sparse matrix, shape (n_samples, n_features)

Matrix to be scaled.

scale : float array with shape (n_features,)

Array of precomputed sample-wise values to use for scaling.