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import numpy as np |
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from sklearn.model_selection import cross_val_score |
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from sklearn.ensemble import GradientBoostingClassifier |
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from sklearn.ensemble import RandomForestClassifier |
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from sklearn.datasets import load_breast_cancer |
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from hyperactive import Hyperactive |
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from hyperactive.optimizers import ( |
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HillClimbingOptimizer, |
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RandomRestartHillClimbingOptimizer, |
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) |
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data = load_breast_cancer() |
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X, y = data.data, data.target |
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View Code Duplication |
def model_rfc(opt): |
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rfc = RandomForestClassifier( |
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n_estimators=opt["n_estimators"], |
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criterion=opt["criterion"], |
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max_features=opt["max_features"], |
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min_samples_split=opt["min_samples_split"], |
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min_samples_leaf=opt["min_samples_leaf"], |
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bootstrap=opt["bootstrap"], |
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) |
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scores = cross_val_score(rfc, X, y, cv=3) |
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return scores.mean() |
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View Code Duplication |
def model_gbc(opt): |
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gbc = GradientBoostingClassifier( |
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n_estimators=opt["n_estimators"], |
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learning_rate=opt["learning_rate"], |
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max_depth=opt["max_depth"], |
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min_samples_split=opt["min_samples_split"], |
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min_samples_leaf=opt["min_samples_leaf"], |
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subsample=opt["subsample"], |
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max_features=opt["max_features"], |
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) |
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scores = cross_val_score(gbc, X, y, cv=3) |
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return scores.mean() |
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search_space_rfc = { |
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"n_estimators": list(range(10, 200, 10)), |
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"criterion": ["gini", "entropy"], |
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"max_features": list(np.arange(0.05, 1.01, 0.05)), |
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"min_samples_split": list(range(2, 21)), |
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"min_samples_leaf": list(range(1, 21)), |
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"bootstrap": [True, False], |
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} |
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search_space_gbc = { |
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"n_estimators": list(range(10, 200, 10)), |
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"learning_rate": [1e-3, 1e-2, 1e-1, 0.5, 1.0], |
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"max_depth": list(range(1, 11)), |
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"min_samples_split": list(range(2, 21)), |
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"min_samples_leaf": list(range(1, 21)), |
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"subsample": list(np.arange(0.05, 1.01, 0.05)), |
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"max_features": list(np.arange(0.05, 1.01, 0.05)), |
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} |
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optimizer1 = HillClimbingOptimizer() |
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optimizer2 = RandomRestartHillClimbingOptimizer() |
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hyper = Hyperactive() |
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hyper.add_search( |
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model_rfc, |
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search_space_rfc, |
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n_iter=50, |
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optimizer=optimizer1, |
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) |
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hyper.add_search( |
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model_gbc, |
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search_space_gbc, |
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n_iter=50, |
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optimizer=optimizer2, |
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n_jobs=2, |
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) |
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hyper.run(max_time=5) |
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SimonBlanke /
Hyperactive
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