y any sparsity. This scaler can also be applied to sparse CSR or CSC matrices. `MaxAbsScaler` doesn't reduce the effect of outliers; it only linearly scales them down. For an example visualization, refer to :ref:`Compare MaxAbsScaler with other scalers `. .. versionadded:: 0.17 Parameters ---------- copy : bool, default=True Set to False to perform inplace scaling and avoid a copy (if the input is already a numpy array). Attributes ---------- scale_ : ndarray of shape (n_features,) Per feature relative scaling of the data. .. versionadded:: 0.17 *scale_* attribute. max_abs_ : ndarray of shape (n_features,) Per feature maximum absolute value. n_features_in_ : int Number of features seen during :term:`fit`. .. versionadded:: 0.24 feature_names_in_ : ndarray of shape (`n_features_in_`,) Names of features seen during :term:`fit`. Defined only when `X` has feature names that are all strings. .. versionadded:: 1.0 n_samples_seen_ : int The number of samples processed by the estimator. Will be reset on new calls to fit, but increments across ``partial_fit`` calls. See Also -------- maxabs_scale : Equivalent function without the estimator API. Notes ----- NaNs are treated as missing values: disregarded in fit, and maintained in transform. Examples -------- >>> from sklearn.preprocessing import MaxAbsScaler >>> X = [[ 1., -1., 2.], ... [ 2., 0., 0.], ... [ 0., 1., -1.]] >>> transformer = MaxAbsScaler().fit(X) >>> transformer MaxAbsScaler() >>> transformer.transform(X) array([[ 0.5, -1. , 1. ], [ 1. , 0. , 0. ], [ 0. , 1. , -0.5]]) rM