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from sklearn.datasets import load_breast_cancer |
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from sklearn.model_selection import cross_val_score |
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from sklearn.feature_selection import SelectKBest, f_classif |
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from sklearn.ensemble import GradientBoostingClassifier |
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from sklearn.pipeline import Pipeline |
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from hyperactive import Hyperactive |
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data = load_breast_cancer() |
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X, y = data.data, data.target |
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def pipeline1(filter_, gbc): |
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return Pipeline([("filter_", filter_), ("gbc", gbc)]) |
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def pipeline2(filter_, gbc): |
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return gbc |
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View Code Duplication |
def model(para, X, y): |
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gbc = GradientBoostingClassifier( |
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n_estimators=para["n_estimators"], |
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max_depth=para["max_depth"], |
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min_samples_split=para["min_samples_split"], |
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min_samples_leaf=para["min_samples_leaf"], |
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) |
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filter_ = SelectKBest(f_classif, k=para["k"]) |
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model_ = para["pipeline"](filter_, gbc) |
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scores = cross_val_score(model_, X, y, cv=3) |
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return scores.mean() |
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search_config = { |
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model: { |
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"k": range(2, 30), |
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"n_estimators": range(10, 200, 10), |
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"max_depth": range(2, 12), |
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"min_samples_split": range(2, 12), |
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"min_samples_leaf": range(1, 11), |
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"pipeline": [pipeline1, pipeline2], |
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} |
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} |
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opt = Hyperactive(X, y) |
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opt.search(search_config, n_iter=100) |
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