Source code for evalml.pipelines.components.estimators.classifiers.et_classifier

from sklearn.ensemble import ExtraTreesClassifier as SKExtraTreesClassifier
from skopt.space import Integer

from evalml.model_family import ModelFamily
from evalml.pipelines.components.estimators import Estimator
from evalml.problem_types import ProblemTypes


class ExtraTreesClassifier(Estimator):
    """Extra Trees Classifier"""
    name = "Extra Trees Classifier"
    hyperparameter_ranges = {
        "n_estimators": Integer(10, 1000),
        "max_features": ["auto", "sqrt", "log2"],
        "max_depth": Integer(4, 10)
    }
    model_family = ModelFamily.EXTRA_TREES
    supported_problem_types = [ProblemTypes.BINARY, ProblemTypes.MULTICLASS]

    def __init__(self,
                 n_estimators=100,
                 max_features="auto",
                 max_depth=6,
                 min_samples_split=2,
                 min_weight_fraction_leaf=0.0,
                 n_jobs=-1,
                 random_state=0):
        parameters = {"n_estimators": n_estimators,
                      "max_features": max_features,
                      "max_depth": max_depth}
        et_classifier = SKExtraTreesClassifier(n_estimators=n_estimators,
                                               max_features=max_features,
                                               max_depth=max_depth,
                                               min_samples_split=min_samples_split,
                                               min_weight_fraction_leaf=min_weight_fraction_leaf,
                                               n_jobs=n_jobs,
                                               random_state=random_state)
        super().__init__(parameters=parameters,
                         component_obj=et_classifier,
                         random_state=random_state)