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from sklearn.cross_validation import KFold, train_test_split, cross_val_score
from sklearn.linear_model import LogisticRegression
from sklearn.svm import SVC
from sklearn.neighbors import KNeighborsClassifier
from sklearn.datasets import make_classification
from sklearn.decomposition import PCA
from sklearn.metrics import roc_curve, auc, precision_recall_fscore_support
from sklearn import grid_search
from sklearn.preprocessing import LabelEncoder
from sklearn.ensemble import BaggingClassifier, AdaBoostClassifier, RandomForestClassifier, AdaBoostClassifier
from sklearn.tree import DecisionTreeClassifier
from sklearn.metrics import accuracy_score, precision_recall_curve
from sklearn.preprocessing import StandardScaler, MinMaxScaler
from sklearn.base import clone
from sklearn.naive_bayes import GaussianNB
from sklearn.pipeline import Pipeline
from itertools import combinations
from sklearn.cross_validation import train_test_split
from sklearn.grid_search import GridSearchCV
from sklearn.metrics import classification_report
from sklearn.metrics import confusion_matrix