def extratree(typ, X_train, Y_train, X_test, Y_test, text):
text.delete(1.0, tk.END)
text.insert(
tk.END,
"\n\nIMPORTING ExtraTree" + "\nProcessing this might take a while...",
"bold")
text.update_idletasks()
from sklearn.tree import ExtraTreeClassifier
ETC = ExtraTreeClassifier()
ETC.fit(X_train, Y_train)
Y_pred = ETC.predict(X_test)
text.insert(
tk.END, "\n\nExtra Tree Classifier report \n" +
classification_report(Y_pred, Y_test), "bold")
text.insert(
tk.END,
"*****roc_auc_score: %0.3f*****\n" % roc_auc_score(Y_pred, Y_test),
"bold")
text.insert(
tk.END, "Extra Tree Classifier confusion matrix \n" +
str(confusion_matrix(Y_pred, Y_test)), "bold")
score = accuracy_score(Y_pred, Y_pred)
text.insert(tk.END, "Extra tree score= ", score)
text.update_idletasks()
roc_curve_acc(Y_test, Y_pred, 'ETC')
if typ == "s":
plt.show()
elif typ == "a":
pass
def dTree(data, labels, test, impurity="gini", mdepth=None):
newData = pd.DataFrame()
newTest = pd.DataFrame()
le = LabelEncoder()
for datum in data:
newData[datum] = le.fit_transform(data[datum])
for testItem in test:
newTest[testItem] = le.fit_transform(test[testItem])
tree1 = DecisionTreeClassifier(criterion=impurity,
max_depth=mdepth,
random_state=42)
tree2 = ExtraTreeClassifier(criterion=impurity,
max_depth=mdepth,
random_state=42)
tree3 = RandomForestClassifier(criterion=impurity,
max_depth=mdepth,
random_state=42)
tree1.fit(newData, labels)
tree2.fit(newData, labels)
tree3.fit(newData, labels)
predict1 = tree1.predict(newTest)
print("tree1", evaluate(predict1, validation_genres))
predict2 = tree2.predict(newTest)
print("tree2", evaluate(predict2, validation_genres))
predict3 = tree3.predict(newTest)
print("tree3", evaluate(predict3, validation_genres))
combined_prediction = voting([predict1, predict2, predict3], [1, 1, 1])
return combined_prediction
def apply_extra_trees_classifier(trainData, targetTrain, testData, targetTest):
"""
Applies decision tree algorithm on the dataset, by tuning various parameters
Args:
dataframe: The input trainData, testData and class label on which the decision tree algorithm has to be applied
"""
# fit a CART model to the data
etc = ExtraTreeClassifier(class_weight=None,
criterion='gini',
max_depth=None,
max_features='auto',
max_leaf_nodes=None,
min_samples_leaf=1,
min_samples_split=2,
min_weight_fraction_leaf=0.0,
random_state=None,
splitter='random')
etc.fit(trainData, targetTrain)
print(etc)
# make predictions
expected = targetTest
predicted = etc.predict(testData)
# summarize the fit of the model
print(accuracy_score(expected, predicted))
def extra_tree_classifier(self):
self.log.writeToLog('Running Extra Tree Classifier Model...')
X_train, X_test, y_train, y_test = self.train_test_split()
et = ExtraTreeClassifier()
trained_model = et.fit(X_train, y_train)
self.save_pickle(trained_model)
y_pred = et.predict(X_test)
self.model_auc_roc(y_test, y_pred, "Extra Tree Classifier Model")
self.model_evaluation(y_test, y_pred, "Extra Tree Classifier Model")
class ExtraTreeClassifier(Classifier): def __init__(self, matrixdatabase): self._matrix_database = matrixdatabase self._has_fit = False self._etc = ETC() def learn(self, ingredients, cuisine): return def classify(self, ingredients): if not self._has_fit: matrix, classes = self._matrix_database.make_train_matrix() self._etc = self._etc.fit(matrix, classes) print 'Fitting complete...' self._has_fit = True output = self._etc.predict(self._matrix_database.make_row_from_recipe(ingredients)) return output[0]
class ExtraTreeClassifier(Classifier):
def __init__(self, matrixdatabase):
self._matrix_database = matrixdatabase
self._has_fit = False
self._etc = ETC()
def learn(self, ingredients, cuisine):
return
def classify(self, ingredients):
if not self._has_fit:
matrix, classes = self._matrix_database.make_train_matrix()
self._etc = self._etc.fit(matrix, classes)
print('Fitting complete...')
self._has_fit = True
output = self._etc.predict(
self._matrix_database.make_row_from_recipe(ingredients))
return output[0]
def fit(self, X, y):
"""Build a random decision tree based classifier from the training set (X, y)."""
# Remove protected features
X_protect = np.delete(X, [self.prot_class], axis=1)
num_tr = len(y)
num_prot_1 = sum(X[:, self.prot_class])
num_prot_0 = num_tr - num_prot_1
#X_protect = X
i = 0
fair_trees = []
predictions = []
# Pick up fair trees
while i < self.num_fair_trees:
new_tree = ExtraTreeClassifier(
max_depth=self.max_depth,
min_samples_leaf=self.min_samples_leaf,
max_features=1)
new_tree.fit(X_protect, y)
new_prediction = new_tree.predict(X_protect)
# Calculate the probability we predict someone will dropout between groups (Statistical Parity)
num_pred_1 = len([
e for e in range(0, num_tr)
if new_prediction[e] == 0 and X[e, self.prot_class] == 1
])
num_pred_0 = len([
e for e in range(0, num_tr)
if new_prediction[e] == 0 and X[e, self.prot_class] == 0
])
stat_parity = abs(num_pred_1 / num_prot_1 -
num_pred_0 / num_prot_0)
if stat_parity < self.rho:
i += 1
fair_trees.append(new_tree)
predictions.append(new_prediction)
self.ridge_model.fit(np.transpose(np.asarray(predictions)), y)
self.decision_trees = fair_trees
def train_extratree_model():
results_extratree_model = {}
results_extratree_model['acc'] = []
results_extratree_model['p_r_f1_s'] = []
for i in range(30):
train_features, train_labels = get_train_data()
test_features, test_labels = get_test_data()
clf = ExtraTreeClassifier()
clf.fit(train_features, train_labels)
predictions = clf.predict(test_features)
p_r_f1_s = precision_recall_fscore_support(test_labels, predictions)
acc = accuracy_score(test_labels, predictions)
print("ExtraTree Model Classifier : ", acc)
print(
"ExtraTree Model Classifier Precision, Recall, F1-Score, Support: ",
p_r_f1_s)
results_extratree_model['acc'].append(acc)
results_extratree_model['p_r_f1_s'].append(p_r_f1_s)
time.sleep(10)
pickle.dump(results_extratree_model,
open('results_extratree_model.pkl', 'wb'))
clf = ExtraTreeClassifier(random_state=103, splitter='random', max_features=9)
##Get dataset
X = np.array(traindata.iloc[:, :10])
y = np.array(traindata.iloc[:, 10])
##build decision tree
X_train, X_test, y_train, y_test = train_test_split(X,
y,
test_size=0.1,
random_state=11)
clf.fit(X_train, y_train)
print('Finish Extra tree training')
predicttest = clf.predict(X_test)
##count click (0 or 1)
countClick = [0, 0]
for i in predicttest:
if i == 0:
countClick[0] += 1
else:
countClick[1] += 1
print(countClick)
##get accuracy, precision, recall, f_measure
tn, fp, fn, tp = confusion_matrix(y_test, predicttest).ravel()
print('tp: {0}, tn: {1}, fp: {2}, fn: {3}'.format(tp, tn, fp, fn))
acc = float((tp + tn) / (tp + tn + fp + fn))
precision = float(tp / (tp + fp))
sc = MinMaxScaler(feature_range=(0,1))
X_train = sc.fit_transform(X_train)
features2 = features2.replace('mod', 0)
features2 = features2.replace('unm', 1)
features2 = features2.replace(np.nan, 0, regex=True)
# print(features)
X_test = features2[['q1', 'q2', 'q3', 'q4', 'q5', 'mis1', 'mis2', 'mis3', 'mis4', 'mis5']].astype(float)
y_test = features2['sample'].astype(int)
sc = MinMaxScaler(feature_range=(0,1))
X_test = sc.fit_transform(X_test)
# X_train, X_test, y_train, y_test = train_test_split(X, Y, test_size=0.25, shuffle=True)
#Classifier
from sklearn.ensemble import BaggingClassifier
clf = ExtraTreeClassifier()
# clf = BaggingClassifier(clf, random_state=0)
clf.fit(X_train, y_train)
y_pred = clf.predict(X_test)
confusion_matrix = pd.crosstab(y_test, y_pred, rownames=['Actual'], colnames=['Predicted'])
sn.heatmap(confusion_matrix, annot=True)
print('Accuracy: ', metrics.accuracy_score(y_test, y_pred))
plt.show()
print "Cross validation"
scores = cross_val_score(RandomForestClassifier(), training, classes,
cv=KFold(n=len(training), n_folds=5, random_state=42),
scoring="accuracy")
print("CV error = %f +-%f" % (1. - np.mean(scores), np.std(scores)))
print("Accuracy =", accuracy_score(y_test, tlf.predict(X_test)))
print("Precision =", precision_score(y_test, tlf.predict(X_test)))
print("Recall =", recall_score(y_test, tlf.predict(X_test)))
print("F =", fbeta_score(y_test, tlf.predict(X_test), beta=1))
print "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"
print "Extra Tree classifier"
rlf = ExtraTreeClassifier()
rlf.fit(training, classes)
print("Training error =", zero_one_loss(classes, rlf.predict(training)))
X_train, X_test, y_train, y_test = train_test_split(training, classes)
rlf = ExtraTreeClassifier()
rlf.fit(X_train, y_train)
print("Training error =", zero_one_loss(y_train, rlf.predict(X_train)))
print("Test error =", zero_one_loss(y_test, rlf.predict(X_test)))
scores = []
print "K-fold cross validation"
for train, test in KFold(n=len(training), n_folds=5, random_state=42):
X_train, y_train = training[train], classes[train]
X_test, y_test = training[test], classes[test]
rlf = ExtraTreeClassifier().fit(X_train, y_train)
scores.append(zero_one_loss(y_test, rlf.predict(X_test)))
#
# ExtraTree
brk = ExtraTreeClassifier(criterion='gini',
splitter='random',
max_depth=None,
min_samples_split=2,
min_samples_leaf=1,
min_weight_fraction_leaf=0.0,
max_features='auto',
random_state=None,
max_leaf_nodes=None,
min_impurity_decrease=0.0,
min_impurity_split=None,
class_weight=None,
ccp_alpha=0.0).fit(X_train_counts,
y_train['prdtypecode'])
pred_ETC = brk.predict(X_test_counts)
# In[16]:
# Adding extratree predictions to dataframe
df2['ExtraTree'] = pred_ETC
# In[18]:
from sklearn.ensemble import GradientBoostingClassifier
# Gradient Boosting
gb_clf_test = GradientBoostingClassifier(n_estimators=10).fit(
X_train_counts, y_train['prdtypecode'])
pred_gb_test = gb_clf_test.predict(X_test_counts)
# data = ''
with open(fname) as f:
for s in f:
tmp = map(int, s.split())
labels.append(tmp[-1])
res.append(tmp[:-1])
# data += (str(tmp)[1:-1]).replace(',', '')+'\n'
# with open('out.txt', 'w') as o:
# o.write(str(data)[1:-1])
return res, labels
X, Y = readData('german.data-numeric.txt')
Xt = X[:-200] ; Yt = Y[:-200]
XT = X[-200:] ; YT = Y[-200:]
print len(Xt)
clf = ExtraTreeClassifier(max_depth=None, random_state=0)
clf = clf.fit(Xt, Yt)
#proba = clf.predict_proba(XT)
#print len(proba)
#print proba
err = 0
for i, x in enumerate(XT):
if clf.predict(x) != YT[i]:
prob = clf.predict_proba(x)
# print prob
err += 1
print err
# wielokrotna 5krotna walidacja krzyzowa (10x5)
rskf = RepeatedStratifiedKFold(n_splits=5, n_repeats=2, random_state=42)
scores = np.zeros((len(preprocs), 5 * 2, len(metrics)))
for fold_id, (train, test) in enumerate(rskf.split(X, y)):
for preproc_id, preproc in enumerate(preprocs):
clf = clone(clf)
if preprocs[preproc] == None:
X_train, y_train = X[train], y[train]
else:
X_train, y_train = preprocs[preproc].fit_resample(
X[train], y[train])
clf.fit(X_train, y_train)
y_pred = clf.predict(X[test])
for metric_id, metric in enumerate(metrics):
scores[preproc_id, fold_id, metric_id] = metrics[metric](y[test],
y_pred)
# Save scores to a file
writeResToFile(scores)
# Load scores from file
scores = loadResFromFile()
# Results table
table = getResultsFromFileAsArray(scores)
print(table)
# Save table to a file
Gboost = GradientBoostingClassifier()
Xgboost = XGBClassifier() #reg_lambda=2
#i=0
for train, test in sfk.split(X, Y):
# print(i)
x_train = X.iloc[train, :]
x_test = X.iloc[test, :]
y_train = Y.iloc[train]
y_test = Y.iloc[test]
LogReg.fit(x_train, y_train)
all_prediction.iloc[0, test] = LogReg.predict(x_test)
#
Extr_tree.fit(x_train, y_train)
all_prediction.iloc[1, test] = Extr_tree.predict(x_test)
#
D_tree.fit(x_train, y_train)
all_prediction.iloc[2, test] = D_tree.predict(x_test)
#
Rnd_frst.fit(x_train, y_train)
all_prediction.iloc[3, test] = Rnd_frst.predict(x_test)
#
Gboost.fit(x_train, y_train)
all_prediction.iloc[4, test] = Gboost.predict(x_test)
Xgboost.fit(x_train, y_train)
all_prediction.iloc[5, test] = Xgboost.predict(x_test)
# i += 1
print(accuracy_score(Y, all_prediction.iloc[:, :].values[5]) * 100)
clf_entropy.fit(X_train, y_train) # Training entropy tree
# Creating SVM with polynomial kernel
clf_svc = svm.SVC(random_state=100, kernel='poly')
clf_svc.fit(X_train, y_train) # Training SVM
# Extra trees classifier
clf_ext = ExtraTreeClassifier(random_state=100,
max_depth=3,
min_samples_leaf=5)
clf_ext.fit(X_train, y_train) # Training extra tree
clf_Lin = LinearDiscriminantAnalysis(solver='lsqr', shrinkage='auto')
y_pred_gi = clf_gini.predict(X_test) # gini tree prediction test
y_pred_en = clf_entropy.predict(X_test) # entropy tree prediction test
y_pred_sv = clf_svc.predict(X_test) # SVM prediction test
y_pred_et = clf_ext.predict(X_test) # extra tree prediction test
clf_Lin.fit(X_train, y_train)
y_pred_L = clf_Lin.predict(X_test)
# Print accuracy scores
print("Gini accuracy score: ", accuracy_score(y_test, y_pred_gi) * 100)
print("Entropy accuracy score: ", accuracy_score(y_test, y_pred_en) * 100)
print("SVM accuracy score: ", accuracy_score(y_test, y_pred_sv) * 100)
print("Extra tree accuracy score: ", accuracy_score(y_test, y_pred_et) * 100)
print("LinearDiscriminant accuracy score: ",
accuracy_score(y_test, y_pred_L) * 100)
print(y_test)
print(y_pred_sv)
def extratree(typ, X_train, Y_train, X_test, Y_test, text):
text.delete(1.0, tk.END)
text.insert(
tk.END,
"\n\nIMPORTING ExtraTree" + "\nProcessing this might take a while...",
"bold")
text.update_idletasks()
from sklearn.tree import ExtraTreeClassifier
ETC = ExtraTreeClassifier()
text.insert(tk.END,
"\n\n Number of Features for Training : " + str(len(X_train)),
"bold")
text.update_idletasks()
text.insert(tk.END,
"\n\n Number of Labels for Training : " + str(len(Y_train)),
"bold")
text.update_idletasks()
text.insert(
tk.END,
"\n\n *** Training ExtraTree using the above Features and Labels ***",
"bold")
text.update_idletasks()
ETC.fit(X_train, Y_train)
text.insert(tk.END, "\n\n Number of Test Features : " + str(len(X_test)),
"bold")
text.update_idletasks()
text.insert(
tk.END,
"\n\n Predicting the Test Labels for the above Test Features using ExtraTree ",
"bold")
text.update_idletasks()
Y_pred = ETC.predict(X_test)
text.insert(tk.END, "\n\n Number of Actual Labels : " + str(len(Y_test)),
"bold")
text.update_idletasks()
text.insert(
tk.END, "\n\n Number of Test Labels Predicted by DExtraTree --> " +
str(len(Y_pred)), "bold")
text.insert(tk.END,
"\n\n ---------------------------------------------------")
text.update_idletasks()
text.insert(
tk.END, "\n\n Number of LABELS MATCHED : " +
str(accuracy_score(Y_test, Y_pred, normalize=False)), "bold")
text.update_idletasks()
text.insert(
tk.END,
"\n\n Calculating Accuracy of ExtraTree = Label Matched/Actual Labels ",
"bold")
text.update_idletasks()
text.insert(
tk.END, "\n\n Accuracy Score : " +
str(accuracy_score(Y_test, Y_pred, normalize=True)), "bold")
text.update_idletasks()
text.insert(
tk.END,
"\n\n ExtraTree report \n" + classification_report(Y_test, Y_pred),
"bold")
text.update_idletasks()
roc_curve_acc(Y_test, Y_pred, 'ETC')
if typ == "s":
plt.show()
elif typ == "a":
pass
for col in cols:
hotlab[col] = data[col]
promoted = data[["is_promoted"]]
#%%
x_train, x_test, y_train, y_test = train_test_split(hotlab, promoted)
sm = SMOTE(random_state=20)
train_input_new, train_output_new = sm.fit_sample(x_train, y_train)
#%%
class1 = ExtraTreeClassifier()
class1.fit(x_train, y_train)
pred1 = class1.predict(x_test)
score = f1_score(y_test, pred1)
#%%
confussion = confusion_matrix(y_test, pred1)
#%%
#For submission
submission_data = pd.read_csv("D:\\Hackathons\\Promotion\\test_2umaH9m.csv")
#%%
submission_data["education"] = submission_data["education"].fillna("Unknown")
submission_data["previous_year_rating"] = submission_data["previous_year_rating"].fillna(np.mean(submission_data["previous_year_rating"]))
submission_data["education"] = np.where(submission_data["age"] > 35, "Does not matter", submission_data["education"])
class ExtraTreeClass:
"""
Name : ExtraTreeClassifier
Attribute : None
Method : predict, predict_by_cv, save_model
"""
def __init__(self):
# 알고리즘 이름
self._name = 'extratree'
# 기본 경로
self._f_path = os.path.abspath(
os.path.join(os.path.dirname(os.path.abspath(__file__)),
os.pardir))
# 경고 메시지 삭제
warnings.filterwarnings('ignore')
# 원본 데이터 로드
data = pd.read_csv(self._f_path +
"/classifier/resource/classifier_sample.csv",
sep=",",
encoding="utf-8")
# 학습 및 레이블(정답) 데이터 분리
self._x = data.drop("quality", axis=1)
self._y = data["quality"]
# 학습 데이터 및 테스트 데이터 분리
self._x_train, self._x_test, self._y_train, self._y_test = train_test_split(
self._x, self._y, test_size=0.2, shuffle=True, random_state=42)
# 모델 선언
self._model = ExtraTreeClassifier()
# 모델 학습
self._model.fit(self._x_train, self._y_train)
# 일반 예측
def predict(self):
# 예측
y_pred = self._model.predict(self._x_test)
# 리포트 출력
print(classification_report(self._y_test, y_pred))
score = accuracy_score(self._y_test, y_pred)
# 스코어 확인
print(f'Score = {score}')
# 스코어 리턴
return score
# CV 예측(Cross Validation)
def predict_by_cv(self):
cv = KFold(n_splits=5, shuffle=True)
# CV 지원 여부
if hasattr(self._model, "score"):
cv_score = cross_val_score(self._model, self._x, self._y, cv=cv)
# 스코어 확인
print(f'Score = {cv_score}')
# 스코어 리턴
return cv_score
else:
raise Exception('Not Support CrossValidation')
# GridSearchCV 예측
def predict_by_gs(self):
pass
# 모델 저장 및 갱신
def save_model(self, renew=False):
# 모델 저장
if not renew:
# 처음 저장
joblib.dump(self._model, self._f_path + f'/model/{self._name}.pkl')
else:
# 기존 모델 대체
if os.path.isfile(self._f_path + f'/model/{self._name}.pkl'):
os.rename(
self._f_path + f'/model/{self._name}.pkl', self._f_path +
f'/model/{str(self._name) + str(time.time())}.pkl')
joblib.dump(self._model, self._f_path + f'/model/{self._name}.pkl')
def __del__(self):
del self._x_train, self._x_test, self._y_train, self._y_test, self._x, self._y, self._model
plot_step = 0.02
for pairidx, pair in enumerate([[0, 1], [0, 2], [0, 3], [1, 2], [1, 3], [2,
3]]):
print(pair, pairidx)
X = iris.data[:, pair]
Y = iris.target
clf = ExtraTreeClassifier(max_depth=3).fit(X, Y)
plt.subplot(2, 3, pairidx + 1)
x_min, x_max = X[:, 0].min() - 1, X[:, 0].max() + 1
y_min, y_max = X[:, 1].min() - 1, X[:, 1].max() + 1
xx, yy = np.meshgrid(np.arange(x_min, x_max, plot_step),
np.arange(y_min, y_max, plot_step))
Z = clf.predict(np.c_[xx.ravel(), yy.ravel()])
Z = Z.reshape(xx.shape)
cs = plt.contourf(xx, yy, Z, cmap=plt.cm.Paired)
plt.xlabel(iris.feature_names[pair[0]])
plt.ylabel(iris.feature_names[pair[1]])
plt.axis("tight")
for i, color in zip(range(n_classes), plot_colors):
idx = np.where(Y == i)
print(i)
# print (idx)
# plt.scatter(X[idx, 0], X[idx, 1], c=color, label=iris.target_names[i],
# cmap=plt.cm.Paired)
plt.axis("tight")
plt.suptitle("Ejemplos de clasificador de arboles")
sgd.score(x_test_3, y_test_3)
sgd = SGDClassifier(loss='log', shuffle=True, random_state=171)
sgd.fit(x_train_3, y_train_3)
sgd.predict(x_train_3)
sgd.score(x_test_3, y_test_3)
sgd = SGDClassifier(shuffle=True, random_state=171)
sgd.fit(x_train_3, y_train_3)
sgd.predict(x_train_3)
sgd.score(x_test_3, y_test_3)
submission = pd.DataFrame({'Id': test.Id, 'Cover_Type': ensemble_test_pred})
submission.head()
submission.to_csv('submission.csv', index=False)
submission_tree = pd.DataFrame({'Id': test.Id, 'Cover_Type': tree_test_pred})
submission_tree.head()
submission_tree.to_csv('submission2.csv', index=False)
#Extra tree classifier is a tree based model for classification problems
et = ExtraTreeClassifier()
et.fit(x_train_3, y_train_3)
et.predict(x_train_3)
et.score(x_test_3, y_test_3)
from sklearn.semi_supervised import LabelPropagation
lb = LabelPropagation()
lb.fit(x_train_3, y_train_3)
lb.predict(x_train_3)
lb.score(x_test_3, y_test_3)
from sklearn.neighbors import KNeighborsClassifier
knng = KNeighborsClassifier()
knng.fit(x_train_3, y_train_3)
knng.predict(x_train_3)
knng.score(x_test_3, y_test_3)
# In[ ]:
DTree = DecisionTreeClassifier(max_depth=3)
DTree.fit(x_train, y_train)
yhat = DTree.predict(x_test)
print("DecisionTreeClassifier")
print("Train set Accuracy: ",
metrics.accuracy_score(y_train, DTree.predict(x_train)))
print("Test set Accuracy: ", metrics.accuracy_score(y_test, yhat))
# In[ ]:
ETree = ExtraTreeClassifier(max_depth=3)
ETree.fit(x_train, y_train)
yhat = ETree.predict(x_test)
print("ExtraTreeClassifier")
print("Train set Accuracy: ",
metrics.accuracy_score(y_train, ETree.predict(x_train)))
print("Test set Accuracy: ", metrics.accuracy_score(y_test, yhat))
# In[ ]:
Ada = AdaBoostClassifier()
Ada.fit(x_train, y_train)
yhat = Ada.predict(x_test)
print("AdaBoostClassifier")
print("Train set Accuracy: ",
metrics.accuracy_score(y_train, Ada.predict(x_train)))
print("Test set Accuracy: ", metrics.accuracy_score(y_test, yhat))
for f in range(X.shape[1]):
print("%d. feature %d (%f)" % (f + 1, indices[f], importances[indices[f]]))
# Plotting featre importance
plt.figure(figsize=(10,5))
plt.title("Feature importances")
plt.bar(range(X.shape[1]), importances[indices],
color="g", yerr=std[indices], align="center")
plt.xticks(range(X.shape[1]), features,rotation=90)
plt.xlim([-1, X.shape[1]])
plt.show()
# Importing,intitiating and fitting Extra trees classifier
from sklearn.tree import ExtraTreeClassifier
extree = ExtraTreeClassifier(max_features=11,min_samples_split=21,
random_state=101,max_depth =28)
extree.fit(X_train_sm1,y_train_sm1)
extree_predict=extree.predict(X_test)
#checking performacne of the extra trees classifier
print(confusion_matrix(y_test,extree_predict))
print(classification_report(y_test,extree_predict))
#Importing test data
test=pd.read_csv('FIA_predictions.csv')
# getting columns same as training data
test=test.iloc[:,0:33]
#converting data type for categorical variables
test['NAICS2']=test['NAICS2'].astype('category')
test['NAICS4']=test['NAICS4'].astype('category')
test['NAICS_CD']=test['NAICS_CD'].astype('category')
test['Restricted_Vertical']=test['Restricted_Vertical'].astype('category')
test['LCTN_TYP_VAL']=test['LCTN_TYP_VAL'].astype('category')
test['srvc_five_dgt_zip']=test['srvc_five_dgt_zip'].astype('category')
test['data_srvc_rnge_6_flg']=test['data_srvc_rnge_6_flg'].astype('category')
print("Confusion matrix = %s"%confusion_matrix(rnd_test_y, clf_cart.predict(rnd_test_X)))
roc_auc_scorer = get_scorer("roc_auc")
print("ROC AUC = %s"%roc_auc_scorer(clf_cart, rnd_test_X, rnd_test_y))
fpr, tpr, thresholds = roc_curve(rnd_test_y, clf_cart.predict_proba(rnd_test_X)[:, 1])
axes_roc.plot(fpr, tpr, label = 'CART-2')
## randomized tree with default setting
clf_rnd_tree = ExtraTreeClassifier()
clf_rnd_tree.fit(rnd_training_X, rnd_training_y)
export_graphviz(clf_rnd_tree, out_file = 'default_rnd_tree.dot',
feature_names = attribute_names,
class_names = bi_class_target_attrs,
filled = True, rounded = True,
special_characters = True)
print(check_output('dot -Tpdf default_rnd_tree.dot -o default_rnd_tree.pdf', shell = True))
print("Accuracy = %s"%accuracy_score(rnd_test_y, clf_rnd_tree.predict(rnd_test_X)))
print("Precision = %s"%precision_score(rnd_test_y, clf_rnd_tree.predict(rnd_test_X)))
print("Recall = %s"%recall_score(rnd_test_y, clf_rnd_tree.predict(rnd_test_X)))
print("F = %s"%fbeta_score(rnd_test_y, clf_rnd_tree.predict(rnd_test_X), beta=1))
print("Confusion matrix = %s"%confusion_matrix(rnd_test_y, clf_rnd_tree.predict(rnd_test_X)))
fpr, tpr, thresholds = roc_curve(rnd_test_y, clf_rnd_tree.predict_proba(rnd_test_X)[:, 1])
axes_roc.plot(fpr, tpr, label = "Randomized tree-1")
axes_roc.set_title("ROC of CART and a randomized tree")
axes_roc.set_xlabel("FPR")
axes_roc.set_ylabel("TPR")
axes_roc.set_ylim(0, 1.1)
axes_roc.legend(loc = 'best', fontsize = 'medium')
roc_auc_scorer = get_scorer("roc_auc")
print("ROC AUC = %s"%roc_auc_scorer(clf_rnd_tree, rnd_test_X, rnd_test_y))
# randomized tree with max_depth = 4, min_samples_leaf = 5
def myclassify_AudPow(numfiers,xtrain_1,xtrain_2,ytrain_1,ytrain_2,xtest):
# remove NaN, Inf, and -Inf values from the xtest feature matrix
xtest = xtest[~np.isnan(xtest).any(axis=1),:]
xtest = xtest[~np.isinf(xtest).any(axis=1),:]
xtrain = np.append(xtrain_1,xtrain_2,0)
ytrain = np.append(ytrain_1,ytrain_2)
ytrain = np.ravel(ytrain)
xtrunclength = sio.loadmat('../Files/xtrunclength.mat')
xtrunclength = xtrunclength['xtrunclength'][0]
#if xtest is NxM matrix, returns Nxnumifiers matrix where each column corresponds to a classifiers prediction vector
count = 0
# print numfiers
predictionMat = np.empty((xtest.shape[0],numfiers))
predictionStringMat = []
finalPredMat = []
bagging2 = BaggingClassifier(ETC(),bootstrap=False,bootstrap_features=False)
bagging2.fit(xtrain,ytrain)
#print bagging2.score(xtest,ytest)
ytest = bagging2.predict(xtest)
predictionMat[:,count] = ytest
count += 1
if count < numfiers:
tree2 = ETC()
tree2.fit(xtrain,ytrain)
ytest = tree2.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
bagging1 = BaggingClassifier(ETC())
bagging1.fit(xtrain,ytrain)
#print bagging1.score(xtest,ytest)
ytest = bagging1.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
# votingClassifiers combine completely different machine learning classifiers and use a majority vote
clff1 = SVC()
clff2 = RFC(bootstrap=False)
clff3 = ETC()
clff4 = neighbors.KNeighborsClassifier()
clff5 = quadda()
eclf = VotingClassifier(estimators = [('svc',clff1),('rfc',clff2),('etc',clff3),('knn',clff4),('qda',clff5)])
eclf = eclf.fit(xtrain,ytrain)
#print(eclf.score(xtest,ytest))
# for claf, label in zip([clff1,clff2,clff3,clff4,clff5,eclf],['SVC','RFC','ETC','KNN','QDA','Ensemble']):
# cla
# scores = crossvalidation.cross_val_score(claf,xtrain,ytrain,scoring='accuracy')
# print ()
ytest = eclf.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
svc1 = SVC()
svc1.fit(xtrain,ytrain)
ytest = svc1.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
# Quadradic discriminant analysis - classifier with quadratic decision boundary -
qda = quadda()
qda.fit(xtrain,ytrain)
#print(qda.score(xtest,ytest))
ytest = qda.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
tree1 = DTC()
tree1.fit(xtrain,ytrain)
ytest = tree1.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
knn1 = neighbors.KNeighborsClassifier() # this classifies based on the #k nearest neighbors, where k is definted by the user.
knn1.fit(xtrain,ytrain)
ytest = knn1.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
# linear discriminant analysis - classifier with linear decision boundary -
lda = linda()
lda.fit(xtrain,ytrain)
ytest = lda.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
tree3 = RFC()
tree3.fit(xtrain,ytrain)
ytest = tree3.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
bagging3 = BaggingClassifier(RFC(),bootstrap=False,bootstrap_features=False)
bagging3.fit(xtrain,ytrain)
ytest = bagging3.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
bagging4 = BaggingClassifier(SVC(),bootstrap=False,bootstrap_features=False)
bagging4.fit(xtrain,ytrain)
ytest = bagging4.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
tree4 = RFC(bootstrap=False)
tree4.fit(xtrain,ytrain)
ytest = tree4.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
tree6 = GBC()
tree6.fit(xtrain,ytrain)
ytest = tree6.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
knn2 = neighbors.KNeighborsClassifier(n_neighbors = 10)
knn2.fit(xtrain,ytrain)
ytest = knn2.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
knn3 = neighbors.KNeighborsClassifier(n_neighbors = 3)
knn3.fit(xtrain,ytrain)
ytest = knn3.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
knn4 = neighbors.KNeighborsClassifier(algorithm = 'ball_tree')
knn4.fit(xtrain,ytrain)
ytest = knn4.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
knn5 = neighbors.KNeighborsClassifier(algorithm = 'kd_tree')
knn5.fit(xtrain,ytrain)
ytest = knn5.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
ncc1 = NearestCentroid()
ncc1.fit(xtrain,ytrain)
ytest = ncc1.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
tree5 = ABC()
tree5.fit(xtrain,ytrain)
ytest = tree5.predict(xtest)
predictionMat[:,count] = ytest
count+=1
for colCount in range(predictionMat.shape[1]):
tempCol = predictionMat[:,colCount]
modeCol = predWindowVecModeFinder(tempCol,xtrunclength)
modeStr = predVec2Str(modeCol)
predictionStringMat.append(modeStr)
finalPredMat += map(int,modeCol)
return predictionStringMat,finalPredMat
def myclassify_practice_set(numfiers,xtrain,ytrain,xtltrain,xtltest,xtest,ytarget=None,testing=False,grids='ABCDEFGHI'):
#NOTE we might not need xtltrain
# xtrain and ytrain are your training set. xtltrain is the indices of corresponding recordings in xtrain and ytrain. these will always be present
#xtest is your testing set. xtltest is the corresponding indices of the recording. for the practice set xtltest = xtrunclength
# ytest is optional and depends on if you are using a testing set or the practice set
# remove NaN, Inf, and -Inf values from the xtest feature matrix
xtest,xtltest,ytarget = removeNanAndInf(xtest,xtltest,ytarget)
# print 'finished removal of Nans'
ytrain = np.ravel(ytrain)
ytarget = np.ravel(ytarget)
#if xtest is NxM matrix, returns Nxnumifiers matrix where each column corresponds to a classifiers prediction vector
count = 0
# print numfiers
predictionMat = np.empty((xtest.shape[0],numfiers))
predictionStringMat = []
finalPredMat = []
targetStringMat = []
targets1 = []
predictions1 = []
# svc1 = SVC()
# svc1.fit(xtrain,ytrain)
# ytest = svc1.predict(xtest)
# predictionMat[:,count] = ytest
# count+=1
if count < numfiers:
# votingClassifiers combine completely different machine learning classifiers and use a majority vote
clff1 = SVC()
clff2 = RFC(bootstrap=False)
clff3 = ETC()
clff4 = neighbors.KNeighborsClassifier()
clff5 = quadda()
eclf = VotingClassifier(estimators = [('svc',clff1),('rfc',clff2),('etc',clff3),('knn',clff4),('qda',clff5)])
eclf = eclf.fit(xtrain,ytrain)
#print(eclf.score(xtest,ytest))
# for claf, label in zip([clff1,clff2,clff3,clff4,clff5,eclf],['SVC','RFC','ETC','KNN','QDA','Ensemble']):
# cla
# scores = crossvalidation.cross_val_score(claf,xtrain,ytrain,scoring='accuracy')
# print ()
ytest = eclf.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
bagging2 = BaggingClassifier(ETC(),bootstrap=False,bootstrap_features=False)
bagging2.fit(xtrain,ytrain)
#print bagging2.score(xtest,ytest)
ytest = bagging2.predict(xtest)
predictionMat[:,count] = ytest
count += 1
if count < numfiers:
tree2 = ETC()
tree2.fit(xtrain,ytrain)
ytest = tree2.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
bagging1 = BaggingClassifier(ETC())
bagging1.fit(xtrain,ytrain)
#print bagging1.score(xtest,ytest)
ytest = bagging1.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
svc1 = SVC()
svc1.fit(xtrain,ytrain)
ytest = svc1.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
# Quadradic discriminant analysis - classifier with quadratic decision boundary -
qda = quadda()
qda.fit(xtrain,ytrain)
#print(qda.score(xtest,ytest))
ytest = qda.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
tree1 = DTC()
tree1.fit(xtrain,ytrain)
ytest = tree1.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
knn1 = neighbors.KNeighborsClassifier() # this classifies based on the #k nearest neighbors, where k is definted by the user.
knn1.fit(xtrain,ytrain)
ytest = knn1.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
# linear discriminant analysis - classifier with linear decision boundary -
lda = linda()
lda.fit(xtrain,ytrain)
ytest = lda.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
tree3 = RFC()
tree3.fit(xtrain,ytrain)
ytest = tree3.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
bagging3 = BaggingClassifier(RFC(),bootstrap=False,bootstrap_features=False)
bagging3.fit(xtrain,ytrain)
ytest = bagging3.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
bagging4 = BaggingClassifier(SVC(),bootstrap=False,bootstrap_features=False)
bagging4.fit(xtrain,ytrain)
ytest = bagging4.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
tree4 = RFC(bootstrap=False)
tree4.fit(xtrain,ytrain)
ytest = tree4.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
tree6 = GBC()
tree6.fit(xtrain,ytrain)
ytest = tree6.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
knn2 = neighbors.KNeighborsClassifier(n_neighbors = 10)
knn2.fit(xtrain,ytrain)
ytest = knn2.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
knn3 = neighbors.KNeighborsClassifier(n_neighbors = 3)
knn3.fit(xtrain,ytrain)
ytest = knn3.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
knn4 = neighbors.KNeighborsClassifier(algorithm = 'ball_tree')
knn4.fit(xtrain,ytrain)
ytest = knn4.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
knn5 = neighbors.KNeighborsClassifier(algorithm = 'kd_tree')
knn5.fit(xtrain,ytrain)
ytest = knn5.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
ncc1 = NearestCentroid()
ncc1.fit(xtrain,ytrain)
ytest = ncc1.predict(xtest)
predictionMat[:,count] = ytest
count+=1
if count < numfiers:
tree5 = ABC()
tree5.fit(xtrain,ytrain)
ytest = tree5.predict(xtest)
predictionMat[:,count] = ytest
count+=1
# print xtltest
# print len(ytest)
for colCount in range(predictionMat.shape[1]):
tempCol = predictionMat[:,colCount]
if testing:
modeCol = temppredWindowVecModeFinder(tempCol,xtltest,4,grids,isPrint=0)
else:
modeCol = predWindowVecModeFinder(tempCol,xtltest,4,isPrint=0)
ytarg = predWindowVecModeFinder(ytarget,xtltest,1,isPrint=0)
if testing:
modeStr = temppredVec2Str(modeCol,grids)
else:
modeStr = predVec2Str(modeCol)
modeStrans = predVec2Str(ytarg)
predictionStringMat.append(modeStr)
predictions1.append(modeCol)
finalPredMat += map(int,modeCol)
targetStringMat.append(modeStrans)
targets1.append(ytarg)
if testing == False:
if ytarget != None:
#print targets1
#print ""
#print predictions1
confusionme = confusion_matrix(targets1[0],predictions1[0])
#print "Confusion Matrix is: "
#print confusionme
return predictionStringMat, targetStringMat, finalPredMat
class stacked_generalization():
def __init__(self, data, target):
self.data = data
if len(target.shape) == 2:
# Convert 2-dim target array into 1-dim target array
self.target = target.reshape(target.shape[0])
else:
self.target = target
self.training_data = None
self.training_target = None
self.test_data = None
self.test_target = None
# Construct 3 Tier-1 (base) classifiers
self.Tier1_classifier1 = LogisticRegression(solver="lbfgs")
self.Tier1_classifier2 = MultinomialNB()
self.Tier1_classifier3 = LinearSVC(penalty="l2")
self.Tier1_classifier4 = ExtraTreeClassifier()
# self.Tier1_classifier5 = SGDClassifier(max_iter=1000, tol=1e-3)
# Construct Tier-2 (meta) classifier
# self.meta_classifier = LogisticRegression(solver="lbfgs")
# self.meta_classifier = MultinomialNB()
# self.meta_classifier = LinearSVC(penalty = "l2")
self.meta_classifier = ExtraTreeClassifier()
# self.meta_classifier = XGBClassifier()
# self.meta_classifier = RandomForestClassifier(n_estimators=100)
# Divide training data into different n_split training blocks and evaluation blocks
# Create T Tier-1 classifiers, C1,..,CT, based on a cross-validation partition of the training data. To do so,
# the entire training dataset is divided into B blocks, and each Tier-1 classifier is first trained on (a different set of)
# B-1 blocks of the training data. Each classifier is then evaluated on the Bth (pseudo-test) block
def TrainingData_Stratified_KFold_split(self, n_split=5, shuffle=False):
# Blocks of training data Partition. n_splits cannot be greater than the number of members in each class
skf_blocks = StratifiedKFold(n_splits=n_split, shuffle=shuffle)
# Creat the indexes of blocks of training data. The number of blocks is n_split
training_blocks_index = []
evaluation_blocks_index = []
for trainingBlock_index, evaluationBlock_index in skf_blocks.split(
self.training_data, self.training_target):
training_blocks_index.append(trainingBlock_index)
evaluation_blocks_index.append(evaluationBlock_index)
training_blocks_data = [
self.training_data[index, :] for index in training_blocks_index
]
training_blocks_target = [
self.training_target[index] for index in training_blocks_index
]
evaluation_blocks_data = [
self.training_data[index, :] for index in evaluation_blocks_index
]
evaluation_blocks_target = [
self.training_target[index] for index in evaluation_blocks_index
]
return training_blocks_data, training_blocks_target, evaluation_blocks_data, evaluation_blocks_target
def train_meta_classifier(self):
training_blocks_data, training_blocks_target, evaluation_blocks_data, evaluation_blocks_target = self.TrainingData_Stratified_KFold_split(
)
# The classification outputs of all Tier-1 classifiers on each training data block (5 blocls now) are saved in list Tier1_outputs
Tier1_outputs = []
for block in range(len(training_blocks_data)):
# all Tier-1 base classifiers fit n-1 training data blocks (n blocks totally)
self.Tier1_classifier1.fit(training_blocks_data[block],
training_blocks_target[block])
self.Tier1_classifier2.fit(training_blocks_data[block],
training_blocks_target[block])
self.Tier1_classifier3.fit(training_blocks_data[block],
training_blocks_target[block])
self.Tier1_classifier4.fit(training_blocks_data[block],
training_blocks_target[block])
# self.Tier1_classifier5.fit(training_blocks_data[block],training_blocks_target[block])
# All Tier-1 base classifiers fit nth training data blocks (n blocks totally).The outputs of all Tier-1 base
# classifiers on each training data block (5 blocls now) are saved in list Tier1_outputs
output_C1 = self.Tier1_classifier1.predict(
evaluation_blocks_data[block])
output_C1 = output_C1.reshape(output_C1.shape[0], 1)
output_C2 = self.Tier1_classifier2.predict(
evaluation_blocks_data[block])
output_C2 = output_C2.reshape(output_C2.shape[0], 1)
output_C3 = self.Tier1_classifier3.predict(
evaluation_blocks_data[block])
output_C3 = output_C3.reshape(output_C3.shape[0], 1)
output_C4 = self.Tier1_classifier4.predict(
evaluation_blocks_data[block])
output_C4 = output_C4.reshape(output_C4.shape[0], 1)
# output_C5 = self.Tier1_classifier5.predict(evaluation_blocks_data[block])
# output_C5 = output_C5.reshape(output_C5.shape[0],1)
# The classification outputs of all Tier-1 classifiers on each training data block (5 blocls now) are saved in list Tier1_outputs
block_outputs = np.hstack((output_C1, output_C2, output_C3,
output_C4)) # horizontally combined
Tier1_outputs.append(block_outputs)
# Vertically combine all training data blocks' classification outputs of all Tier-1 classifiers.
# The function np.vstack() can be given a list
Tier1_outputs = np.vstack(Tier1_outputs)
# Combine all training data blocks' real labels
evaluation_blocks_target = np.concatenate([
eva_block_target for eva_block_target in evaluation_blocks_target
])
# Using all training data blocks' classification outputs of all Tier-1 classifiers and all training data blocks'
# real labels to train the meta classifier
self.meta_classifier.fit(Tier1_outputs, evaluation_blocks_target)
print("The training of meta classifier is finished")
# return accuracy, recall and precision of test data
# Train stacked generalization by cross-validation partition.
def train_stacked_generalization_CV(self, n_split=5, shuffle=False):
# Cross-validation Partition. n_splits cannot be greater than the number of members in each class
skf_cv = StratifiedKFold(n_splits=n_split, shuffle=shuffle)
# Creat the indexes of training data and test data
training_sets_index = []
test_sets_index = []
for training_index, test_index in skf_cv.split(self.data, self.target):
training_sets_index.append(training_index)
test_sets_index.append(test_index)
training_sets_data = [
self.data[index, :] for index in training_sets_index
]
training_sets_target = [
self.target[index] for index in training_sets_index
]
test_sets_data = [self.data[index, :] for index in test_sets_index]
test_sets_target = [self.target[index] for index in test_sets_index]
# Store all metrics of cross-validation in different lists
test_cv_accuracy = []
test_cv_recall = []
test_cv_precision = []
time_start = time.time() # start time
for cv_time in range(n_split):
self.training_data = training_sets_data[cv_time]
self.training_target = training_sets_target[cv_time]
self.test_data = test_sets_data[cv_time]
self.test_target = test_sets_target[cv_time]
# train the meta classifier
self.train_meta_classifier()
# Using all training data to retrain the all Tier-1 base classifiers
self.Tier1_classifier1.fit(self.training_data,
self.training_target)
self.Tier1_classifier2.fit(self.training_data,
self.training_target)
self.Tier1_classifier3.fit(self.training_data,
self.training_target)
self.Tier1_classifier4.fit(self.training_data,
self.training_target)
# self.Tier1_classifier5.fit(self.training_data,self.training_target)
# All retrained Tier-1 base classifiers are utilized to predict the test data
testset_output_C1 = self.Tier1_classifier1.predict(self.test_data)
testset_output_C1 = testset_output_C1.reshape(
testset_output_C1.shape[0], 1)
testset_output_C2 = self.Tier1_classifier2.predict(self.test_data)
testset_output_C2 = testset_output_C2.reshape(
testset_output_C2.shape[0], 1)
testset_output_C3 = self.Tier1_classifier3.predict(self.test_data)
testset_output_C3 = testset_output_C3.reshape(
testset_output_C3.shape[0], 1)
testset_output_C4 = self.Tier1_classifier4.predict(self.test_data)
testset_output_C4 = testset_output_C4.reshape(
testset_output_C4.shape[0], 1)
# testset_output_C5 = self.Tier1_classifier5.predict(self.test_data)
# testset_output_C5 = testset_output_C5.reshape(testset_output_C5.shape[0],1)
# Horizontally combine all Tier-1 base classifiers' predictions on test data
testset_outputs_Tier1 = np.hstack(
(testset_output_C1, testset_output_C2, testset_output_C3,
testset_output_C4))
# Based on predictions on test data, of all Tier-1 base classifiers , it would use the meta classifier to predict labels of test data
testset_outputs_meta = self.meta_classifier.predict(
testset_outputs_Tier1)
# Round all predictions of meta classifier xgboost
testset_outputs_meta = np.round(testset_outputs_meta)
# Store all metrics of cross-validation in different lists
test_cv_accuracy.append(
accuracy_score(self.test_target, testset_outputs_meta))
test_cv_recall.append(
recall_score(self.test_target, testset_outputs_meta))
test_cv_precision.append(
precision_score(self.test_target, testset_outputs_meta))
# Convert lists into numpy arrays, since only numpy arrays can be used to calculate mean values, min values, max values and std values
test_cv_accuracy = np.array(test_cv_accuracy)
test_cv_recall = np.array(test_cv_recall)
test_cv_precision = np.array(test_cv_precision)
time_end = time.time() # end time
print("\nTime cost: ", time_end - time_start, "seconds")
cv_scores = {
"test_accuracy": test_cv_accuracy,
"test_precision_weighted": test_cv_recall,
"test_recall_weighted": test_cv_precision
}
return cv_scores