/
metalearning.py
623 lines (473 loc) · 23.8 KB
/
metalearning.py
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import csv
from math import sqrt
from sklearn import svm, tree
from sklearn.ensemble import VotingClassifier, AdaBoostClassifier, BaggingClassifier
from sklearn.multiclass import OneVsRestClassifier
from sklearn.neighbors import KNeighborsClassifier
training_set = []
training_set_classification = []
evaluation_set = []
voting_predictions = []
stacking_predictions = []
adaboost_predictions = []
bagging_predictions = []
# Classificadores base
classifier_knn = KNeighborsClassifier(n_neighbors=3, weights='distance', algorithm='brute', p=2)
classifier_svm = svm.SVC(kernel='linear')
classifier_dt = tree.DecisionTreeClassifier(criterion='entropy')
svm_predictions = []
knn_predictions = []
dt_predictions = []
anom_flows_count = 0
normal_flows_count = 0
voting_statistics = {'false_negatives': [], 'false_positives': [], 'true_negatives': [],'true_positives': [],
'recall': [], 'precision': [], 'accuracy': [], 'error_rate': []}
stacking_statistics = {'false_negatives': [], 'false_positives': [], 'true_negatives': [],'true_positives': [],
'recall': [], 'precision': [], 'accuracy': [], 'error_rate': []}
bagging_statistics = {'false_negatives': [], 'false_positives': [], 'true_negatives': [],'true_positives': [],
'recall': [], 'precision': [], 'accuracy': [], 'error_rate': []}
adaboost_statistics = {'false_negatives': [], 'false_positives': [], 'true_negatives': [],'true_positives': [],
'recall': [], 'precision': [], 'accuracy': [], 'error_rate': []}
svm_statistics = {'false_negatives': [], 'false_positives': [], 'true_negatives': [],'true_positives': [],
'recall': [], 'precision': [], 'accuracy': [], 'error_rate': []}
knn_statistics = {'false_negatives': [], 'false_positives': [], 'true_negatives': [],'true_positives': [],
'recall': [], 'precision': [], 'accuracy': [], 'error_rate': []}
dt_statistics = {'false_negatives': [], 'false_positives': [], 'true_negatives': [],'true_positives': [],
'recall': [], 'precision': [], 'accuracy': [], 'error_rate': []}
def main():
experiments_times = 50
selectTrainingSet(0.3)
selectEvaluationSet(0.7)
classifier_knn.fit(training_set, training_set_classification)
classifier_svm.fit(training_set, training_set_classification)
classifier_dt.fit(training_set, training_set_classification)
print('>>> Dados reais')
print('Tamanho do conjunto de avaliação: ', len(evaluation_set))
runNTimes(experiments_times)
print('')
print('')
print('>>> Dados Anderson ')
resetVariables()
dadosAndersonSelectTrainingSet(0.3)
dadosAndersonSelectEvaluationSet(0.7)
print('Tamanho do conjunto de avaliação: ', len(evaluation_set))
classifier_knn.fit(training_set, training_set_classification)
classifier_svm.fit(training_set, training_set_classification)
classifier_dt.fit(training_set, training_set_classification)
runNTimes(experiments_times)
def calculateMeanStatistics(times):
technique_name = ['Voting', 'AdaBoost', 'Bagging', 'Stacking', 'SVM', 'KNN', 'DT']
j = 0
for statistics in [voting_statistics, adaboost_statistics, bagging_statistics, stacking_statistics, svm_statistics, knn_statistics, dt_statistics]:
false_negatives_count = 0
false_positives_count = 0
true_negatives_count = 0
true_positives_count = 0
recall_count = 0
precision_count = 0
accuracy_count = 0
error_rate_count = 0
variance = 0
std_deviation = 0
for i in range(0, times):
false_negatives_count = false_negatives_count + statistics['false_negatives'][i]
false_positives_count = false_positives_count + statistics['false_positives'][i]
true_negatives_count = true_negatives_count + statistics['true_negatives'][i]
true_positives_count = true_positives_count + statistics['true_positives'][i]
recall_count = recall_count + statistics['recall'][i]
precision_count = precision_count + statistics['precision'][i]
accuracy_count = accuracy_count + statistics['accuracy'][i]
error_rate_count = error_rate_count + statistics['error_rate'][i]
# Média dos valores
false_negatives_mean = false_negatives_count/times
false_positives_mean = false_positives_count/times
true_negatives_mean = true_negatives_count/times
true_positives_mean = true_positives_count/times
recall_mean = recall_count/times
precision_mean = precision_count/times
accuracy_mean = accuracy_count/times
error_rate_mean = error_rate_count/times
# Cálculo da variância
false_negatives_variance = calculateVariance(statistics['false_negatives'], false_negatives_mean)
false_positives_variance = calculateVariance(statistics['false_positives'], false_positives_mean)
true_negatives_variance = calculateVariance(statistics['true_negatives'], true_negatives_mean)
true_positives_variance = calculateVariance(statistics['true_positives'], true_positives_mean)
recall_variance = calculateVariance(statistics['recall'], recall_mean)
precision_variance = calculateVariance(statistics['precision'], precision_mean)
accuracy_variance = calculateVariance(statistics['accuracy'], accuracy_mean)
error_rate_variance = calculateVariance(statistics['error_rate'], error_rate_mean)
# Cálculo do desvio padrão
false_negatives_std_deviation = sqrt(false_negatives_variance)
false_positives_std_deviation = sqrt(false_positives_variance)
true_positives_std_deviation = sqrt(true_positives_variance)
true_negatives_std_deviation = sqrt(true_negatives_variance)
recall_std_deviation = sqrt(recall_variance)
precision_std_deviation = sqrt(precision_variance)
accuracy_std_deviation = sqrt(accuracy_variance)
error_rate_std_deviation = sqrt(error_rate_variance)
print('>> {0}'.format(technique_name[j]))
print('Falsos negativos: {0} ; var = {1} ; dp = {2}'.format(false_negatives_mean, false_negatives_variance, false_negatives_std_deviation))
print('Falsos positivos: {0} ; var = {1} ; dp = {2}'.format(false_positives_mean, false_positives_variance, false_positives_std_deviation))
print('Verdadeiros negativos: {0} ; var = {1} ; dp = {2}'.format(true_negatives_mean, true_negatives_variance, true_negatives_std_deviation))
print('Verdadeiros positivos: {0} ; var = {1} ; dp = {2}'.format(true_positives_mean, true_positives_variance, true_positives_std_deviation))
print('Recall: {0} ; var = {1} ; dp = {2}'.format(recall_mean, recall_variance, recall_std_deviation))
print('Precisão: {0} ; var = {1} ; dp = {2}'.format(precision_mean, precision_variance, precision_std_deviation))
print('Acurácia: {0} ; var = {1} ; dp = {2}'.format(accuracy_mean, accuracy_variance, accuracy_std_deviation))
print('Taxa de erro: {0}; var = {1}; dp = {2}'.format(error_rate_mean, error_rate_variance, error_rate_std_deviation))
j = j + 1
def calculateVariance(list_values, mean):
diff_sum = 0
for i in range(0, len(list_values)):
diff_sum = diff_sum + pow((list_values[i] - mean), 2)
variance = diff_sum/len(list_values)
return variance
def runNTimes(times):
for i in range(0, times):
voting(evaluation_set)
adaboost(evaluation_set)
bagging(evaluation_set)
stacking(evaluation_set)
svm(evaluation_set)
knn(evaluation_set)
decisionTree(evaluation_set)
calculateMeanStatistics(times)
def resetVariables():
global training_set
training_set = []
global training_set_classification
training_set_classification = []
global evaluation_set
evaluation_set = []
global voting_predictions
voting_predictions = []
global stacking_predictions
stacking_predictions = []
global adaboost_predictions
adaboost_predictions = []
global bagging_predictions
bagging_predictions = []
global svm_predictions
svm_predictions = []
global knn_predictions
knn_predictions = []
global dt_predictions
dt_predictions = []
global anom_flows_count
anom_flows_count = 0
global normal_flows_count
normal_flows_count = 0
global voting_statistics, stacking_statistics, bagging_statistics, adaboost_statistics, svm_statistics, knn_statistics, dt_statistics
voting_statistics = {'false_negatives': [], 'false_positives': [], 'true_negatives': [],'true_positives': [],
'recall': [], 'precision': [], 'accuracy': [], 'error_rate': []}
stacking_statistics = {'false_negatives': [], 'false_positives': [], 'true_negatives': [],'true_positives': [],
'recall': [], 'precision': [], 'accuracy': [], 'error_rate': []}
bagging_statistics = {'false_negatives': [], 'false_positives': [], 'true_negatives': [],'true_positives': [],
'recall': [], 'precision': [], 'accuracy': [], 'error_rate': []}
adaboost_statistics = {'false_negatives': [], 'false_positives': [], 'true_negatives': [],'true_positives': [],
'recall': [], 'precision': [], 'accuracy': [], 'error_rate': []}
svm_statistics = {'false_negatives': [], 'false_positives': [], 'true_negatives': [],'true_positives': [],
'recall': [], 'precision': [], 'accuracy': [], 'error_rate': []}
knn_statistics = {'false_negatives': [], 'false_positives': [], 'true_negatives': [],'true_positives': [],
'recall': [], 'precision': [], 'accuracy': [], 'error_rate': []}
dt_statistics = {'false_negatives': [], 'false_positives': [], 'true_negatives': [],'true_positives': [],
'recall': [], 'precision': [], 'accuracy': [], 'error_rate': []}
def selectTrainingSet(percentage):
# Coloca as instâncias normais
num_instances = 0
instances = []
with open('csv-files-features/feats_normal50.csv', 'r') as csv_file:
content = csv.reader(csv_file, delimiter=',')
for line in content:
inst = [float(line[6]), float(line[7]), float(line[8]), float(line[9]), float(line[10]), float(line[11]), float(line[12])]
instances.append(inst)
num_instances = num_instances + 1
set_size = int(percentage * num_instances)
for i in range(0, set_size):
training_set.append(instances[i])
training_set_classification.append(0)
# Coloca as instâncias anômalas
dos_num_instances = 0
dos_instances = []
with open('csv-files-features/anom-flows/booters-feats.csv', 'r') as csv_file:
content = csv.reader(csv_file, delimiter=',')
for line in content:
inst = [float(line[6]), float(line[7]), float(line[8]), float(line[9]), float(line[10]), float(line[11]), float(line[12])]
dos_instances.append(inst)
dos_num_instances = dos_num_instances + 1
dos_set_size = int(percentage * dos_num_instances)
for i in range(0, dos_set_size):
training_set.append(dos_instances[i])
training_set_classification.append(1)
def selectEvaluationSet(percentage):
# Coloca as instâncias normais
num_instances = 0
instances = []
with open('csv-files-features/feats_normal100.csv', 'r') as csv_file:
content = csv.reader(csv_file, delimiter=',')
for line in content:
inst = [float(line[6]), float(line[7]), float(line[8]), float(line[9]), float(line[10]), float(line[11]), float(line[12])]
instances.append(inst)
num_instances = num_instances + 1
training_size = int((1 - percentage) * num_instances)
print('Normal flows set size: ', num_instances - training_size)
global normal_flows_count
normal_flows_count = num_instances - training_size
global evaluation_set
for i in range(training_size, num_instances):
evaluation_set.append(instances[i])
# Usa apenas 100 instâncias anômalas
evaluation_set = evaluation_set[:100]
# Coloca as instâncias anômalas
dos_num_instances = 0
dos_instances = []
with open('csv-files-features/anom-flows/booters-feats.csv', 'r') as csv_file:
content = csv.reader(csv_file, delimiter=',')
for line in content:
inst = [float(line[6]), float(line[7]), float(line[8]), float(line[9]), float(line[10]), float(line[11]), float(line[12])]
dos_instances.append(inst)
dos_num_instances = dos_num_instances + 1
training_size = int((1 - percentage) * dos_num_instances)
print('Anom flows set size: ', dos_num_instances - training_size)
global anom_flows_count
anom_flows_count = dos_num_instances - training_size
for i in range(training_size, dos_num_instances):
evaluation_set.append(dos_instances[i])
def calculateStatistics(predictions):
# Calcula a acurácia do método
false_positives = 0
false_negatives = 0
total_predictions = len(voting_predictions)
# Utilizado para o cálculo de precisão
classified_as_anom_count = 0
wright_normal_count = 0
global normal_flows_count
for i in range(0, normal_flows_count):
if predictions[i] == 0:
wright_normal_count = wright_normal_count + 1
else:
# fluxo normal que foi considerado anômalo
false_positives = false_positives + 1
classified_as_anom_count = classified_as_anom_count + 1
wright_anom_count = 0
# global normal_flows_count, anom_flows_count
for i in range(normal_flows_count, normal_flows_count + anom_flows_count):
if predictions[i] == 1:
wright_anom_count = wright_anom_count + 1
classified_as_anom_count = classified_as_anom_count + 1
else:
# Fluxo anômalo que foi considerado normal
false_negatives = false_negatives + 1
wright_count = wright_normal_count + wright_anom_count
accuracy = wright_count / total_predictions
#print('> {0}//{1}'.format(wright_count, len(voting_predictions)))
# Recall é porcentagem de positivos que conseguimos acertar
# 5 está hardcoded -> numero de fluxos anomalos no evaluation set
# global anom_flows_count
recall = wright_anom_count / anom_flows_count
# Precision é a porcentagem das previsões positivas que está correta
# Número de flows anômalos que classificamos como anômalos
if classified_as_anom_count > 0:
precision = wright_anom_count / classified_as_anom_count
else:
# eh isso mesmo?
precision = 0
# Calcula a taxa de erro (error rate)
error_rate = (false_negatives + false_positives) / total_predictions
true_negatives = wright_normal_count
true_positives = wright_anom_count
# Retorna uma lista com todas as estatísticas
return [false_negatives, false_positives, true_negatives, true_positives, recall, precision, accuracy, error_rate]
def voting(evaluation_set):
meta_learner = VotingClassifier(estimators=[
('knn', classifier_knn),
('svm', classifier_svm),
('dt', classifier_dt)],
voting='hard')
meta_learner = meta_learner.fit(training_set, training_set_classification)
result = meta_learner.predict(evaluation_set)
global voting_predictions
voting_predictions = []
voting_predictions = list(result.tolist())
global voting_statistics
statistics = calculateStatistics(voting_predictions)
voting_statistics['false_negatives'].append(statistics[0])
voting_statistics['false_positives'].append(statistics[1])
voting_statistics['true_negatives'].append(statistics[2])
voting_statistics['true_positives'].append(statistics[3])
voting_statistics['recall'].append(statistics[4])
voting_statistics['precision'].append(statistics[5])
voting_statistics['accuracy'].append(statistics[6])
voting_statistics['error_rate'].append(statistics[7])
# pegar dados com base no que eu to executando - anderson ou reais
# classificacao_real = []
# rocCurve(result, )
def adaboost(evaluation_test):
meta_learner = AdaBoostClassifier(base_estimator=classifier_dt, n_estimators=15, algorithm='SAMME')
meta_learner = meta_learner.fit(training_set, training_set_classification)
result = meta_learner.predict(evaluation_test)
global adaboost_predictions
adaboost_predictions = []
adaboost_predictions = list(result.tolist())
global adaboost_statistics
statistics = calculateStatistics(adaboost_predictions)
adaboost_statistics['false_negatives'].append(statistics[0])
adaboost_statistics['false_positives'].append(statistics[1])
adaboost_statistics['true_negatives'].append(statistics[2])
adaboost_statistics['true_positives'].append(statistics[3])
adaboost_statistics['recall'].append(statistics[4])
adaboost_statistics['precision'].append(statistics[5])
adaboost_statistics['accuracy'].append(statistics[6])
adaboost_statistics['error_rate'].append(statistics[7])
def bagging(evaluation_test):
meta_learner = BaggingClassifier(base_estimator=classifier_dt, n_estimators=10)
meta_learner = meta_learner.fit(training_set, training_set_classification)
result = meta_learner.predict(evaluation_test)
global bagging_predictions
bagging_predictions = []
bagging_predictions = list(result.tolist())
global bagging_statistics
statistics = calculateStatistics(bagging_predictions)
bagging_statistics['false_negatives'].append(statistics[0])
bagging_statistics['false_positives'].append(statistics[1])
bagging_statistics['true_negatives'].append(statistics[2])
bagging_statistics['true_positives'].append(statistics[3])
bagging_statistics['recall'].append(statistics[4])
bagging_statistics['precision'].append(statistics[5])
bagging_statistics['accuracy'].append(statistics[6])
bagging_statistics['error_rate'].append(statistics[7])
def stacking(evaluation_set):
result = []
## Nível 1 stacking já treinado na main
predictions_knn = []
predictions_svm = []
predictions_dt = []
for instance in training_set:
predictions_knn.append(classifier_knn.predict([instance]))
predictions_svm.append(classifier_svm.predict([instance]))
predictions_dt.append(classifier_dt.predict([instance]))
predictions_level_1 = []
# Combina as predições do nível 1 com votação majoritária
for i in range(0, len(training_set)):
predictions_sum = predictions_knn[i] + predictions_svm[i] + predictions_dt[i]
pred = 0
if predictions_sum > 0:
pred = 1
predictions_level_1.append(pred)
# TODO: As predições do nível 1 não deveriam ser appendadas ao conjunto de features?
## Nível 2 stacking - Treinamento
meta_learner_dt = tree.DecisionTreeClassifier()
meta_learner_dt.fit(training_set, predictions_level_1)
result = meta_learner_dt.predict(evaluation_set)
global stacking_predictions
stacking_predictions = []
stacking_predictions = list(result.tolist())
global stacking_statistics
statistics = calculateStatistics(stacking_predictions)
stacking_statistics['false_negatives'].append(statistics[0])
stacking_statistics['false_positives'].append(statistics[1])
stacking_statistics['true_negatives'].append(statistics[2])
stacking_statistics['true_positives'].append(statistics[3])
stacking_statistics['recall'].append(statistics[4])
stacking_statistics['precision'].append(statistics[5])
stacking_statistics['accuracy'].append(statistics[6])
stacking_statistics['error_rate'].append(statistics[7])
def svm(evaluation_set):
global classifier_svm, svm_predictions
result = classifier_svm.predict(evaluation_set)
svm_predictions = []
svm_predictions = list(result.tolist())
global svm_statistics
statistics = calculateStatistics(svm_predictions)
svm_statistics['false_negatives'].append(statistics[0])
svm_statistics['false_positives'].append(statistics[1])
svm_statistics['true_negatives'].append(statistics[2])
svm_statistics['true_positives'].append(statistics[3])
svm_statistics['recall'].append(statistics[4])
svm_statistics['precision'].append(statistics[5])
svm_statistics['accuracy'].append(statistics[6])
svm_statistics['error_rate'].append(statistics[7])
def knn(evaluation_set):
global classifier_knn, knn_predictions
result = classifier_knn.predict(evaluation_set)
knn_predictions = []
knn_predictions = list(result.tolist())
global knn_statistics
statistics = calculateStatistics(knn_predictions)
knn_statistics['false_negatives'].append(statistics[0])
knn_statistics['false_positives'].append(statistics[1])
knn_statistics['true_negatives'].append(statistics[2])
knn_statistics['true_positives'].append(statistics[3])
knn_statistics['recall'].append(statistics[4])
knn_statistics['precision'].append(statistics[5])
knn_statistics['accuracy'].append(statistics[6])
knn_statistics['error_rate'].append(statistics[7])
def decisionTree(evaluation_set):
global classifier_dt, dt_predictions
result = classifier_dt.predict(evaluation_set)
dt_predictions = []
dt_predictions = list(result.tolist())
global dt_statistics
statistics = calculateStatistics(dt_predictions)
dt_statistics['false_negatives'].append(statistics[0])
dt_statistics['false_positives'].append(statistics[1])
dt_statistics['true_negatives'].append(statistics[2])
dt_statistics['true_positives'].append(statistics[3])
dt_statistics['recall'].append(statistics[4])
dt_statistics['precision'].append(statistics[5])
dt_statistics['accuracy'].append(statistics[6])
dt_statistics['error_rate'].append(statistics[7])
def dadosAndersonSelectTrainingSet(percentage):
num_instances = 0
instances = []
dos_instances = []
with open('csv-files-features/feats_anderson.csv', 'r') as csv_file:
content = csv.reader(csv_file, delimiter=',')
for line in content:
inst = [float(line[0]), float(line[1]), float(line[2]), float(line[3]), float(line[4]), float(line[5])]
if num_instances < 9:
# Primeiras 9 instâncias são anômalas
dos_instances.append(inst)
else:
instances.append(inst)
num_instances = num_instances + 1
set_size = int(percentage * num_instances)
dos_set_size = int(percentage * 9)
for i in range(0, set_size):
training_set.append(instances[i])
training_set_classification.append(0)
for i in range(0, dos_set_size):
training_set.append(dos_instances[i])
training_set_classification.append(1)
def dadosAndersonSelectEvaluationSet(percentage):
num_instances = 0
instances = []
dos_instances = []
with open('csv-files-features/feats_anderson.csv', 'r') as csv_file:
content = csv.reader(csv_file, delimiter=',')
for line in content:
inst = [float(line[0]), float(line[1]), float(line[2]), float(line[3]), float(line[4]), float(line[5])]
if num_instances < 9:
# Primeiras 9 instâncias são anômalas
dos_instances.append(inst)
else:
instances.append(inst)
num_instances = num_instances + 1
training_size = int((1 - percentage) * len(instances))
global normal_flows_count
for i in range(training_size, len(instances)):
evaluation_set.append(instances[i])
normal_flows_count = normal_flows_count + 1
training_size = int((1 - percentage) * len(dos_instances))
count = 0
for i in range(training_size, len(dos_instances)):
evaluation_set.append(dos_instances[i])
count = count + 1
global anom_flows_count
anom_flows_count = count
def crossValidation():
kf = KFold(10, n_folds = 10, shuffle=True)
for train_set,test_set in kf:
print(train_set, test_set)
# Se funcionar assim mesmo, eu posso chamar as funções e ja ir coletando as estatiscticas aqui mesmo.§
if __name__ == '__main__':
main()