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                import numpy as np  | 
            
            
                                                        
            
                                    
            
            
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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.decomposition import PCA  | 
            
            
                                                        
            
                                    
            
            
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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 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 pca(X):  | 
            
            
                                                        
            
                                    
            
            
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                    X = PCA(n_components=10).fit_transform(X)  | 
            
            
                                                        
            
                                    
            
            
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                    return X  | 
            
            
                                                        
            
                                    
            
            
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                def none(X):  | 
            
            
                                                        
            
                                    
            
            
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                    return X  | 
            
            
                                                        
            
                                    
            
            
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                def model(para, X, y):  | 
            
                            
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                    model = 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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                    X_pca = para["decomposition"](X)  | 
            
            
                                                        
            
                                    
            
            
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                    X = np.hstack((X, X_pca))  | 
            
            
                                                        
            
                                    
            
            
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                    X = SelectKBest(f_classif, k=para["k"]).fit_transform(X, y)  | 
            
            
                                                        
            
                                    
            
            
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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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                        "decomposition": [pca, none],  | 
            
            
                                                        
            
                                    
            
            
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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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                    }  | 
            
            
                                                        
            
                                    
            
            
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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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