Table 3.

The comparison of the results for 6 classifiers using tf-idf vectorization.

Classifier	Unigram	Bigram
Stochastic Gradient Descent (SGD)	0.7429	0.7439
Support Vector Machine (SVM)	0.7651	0.7651
Multilayer Perceptron (MLP)	0.7453	0.7457
Logistic Regression (LR)	0.7683	0.7683
Multinomial Naive Bayes (MNB)	0.7182	0.7182
Gradient Boosting Classifier (GB)	0.6764	0.6768