class_docstr: Mixin abstract base class defining functionality for classifiers.
class_docstr_tok: ["Mixin","abstract","base","class","defining","functionality","for","classifiers","."]
code: def __init__(self, **kwargs) -> None:
      super().__init__(**kwargs)  # type: ignore
      self._nb_classes: int = -1
  
imports: from abc import ABC, ABCMeta, abstractmethod
  from typing import List, Optional, Union
  import numpy
  from art.estimators.estimator import BaseEstimator, NeuralNetworkMixin, LossGradientsMixin, DecisionTreeMixin
label_desc: Use image node_id 1 to create a new ClassifierMixin object from inherited base classes: ABC with example: obj = ClassifierMixin()