元估计器Mixin #
- class sklearn.base.MetaEstimatorMixin[source]#
scikit-learn中所有元估计器的Mixin类。
此Mixin为空,仅用于指示估计器是元估计器。
1.6版本中的更改:
_required_parameters
现已删除,因为测试已重构,不再使用它。示例
>>> from sklearn.base import MetaEstimatorMixin >>> from sklearn.datasets import load_iris >>> from sklearn.linear_model import LogisticRegression >>> class MyEstimator(MetaEstimatorMixin): ... def __init__(self, *, estimator=None): ... self.estimator = estimator ... def fit(self, X, y=None): ... if self.estimator is None: ... self.estimator_ = LogisticRegression() ... else: ... self.estimator_ = self.estimator ... return self >>> X, y = load_iris(return_X_y=True) >>> estimator = MyEstimator().fit(X, y) >>> estimator.estimator_ LogisticRegression()
图库示例#
元数据路由