`sklearn.preprocessing`.normalize¶

sklearn.preprocessing.normalize(X, norm='l2', *, axis=1, copy=True, return_norm=False)[source]¶

Scale input vectors individually to unit norm (vector length).

Read more in the User Guide.

Parameters:

X{array-like, sparse matrix} of shape (n_samples, n_features): The data to normalize, element by element. scipy.sparse matrices should be in CSR format to avoid an un-necessary copy.
norm{‘l1’, ‘l2’, ‘max’}, default=’l2’: The norm to use to normalize each non zero sample (or each non-zero feature if axis is 0).
axis{0, 1}, default=1: Define axis used to normalize the data along. If 1, independently normalize each sample, otherwise (if 0) normalize each feature.
copybool, default=True: Set to False to perform inplace row normalization and avoid a copy (if the input is already a numpy array or a scipy.sparse CSR matrix and if axis is 1).
return_normbool, default=False: Whether to return the computed norms.

Returns:

X{ndarray, sparse matrix} of shape (n_samples, n_features): Normalized input X.
normsndarray of shape (n_samples, ) if axis=1 else (n_features, ): An array of norms along given axis for X. When X is sparse, a NotImplementedError will be raised for norm ‘l1’ or ‘l2’.

sklearn.preprocessing.normalize¶