Opinion mining of text documents written in Macedonian language
TABLE III: Accuracy, bigrams
['Presence', 'SVM', 'NB']
As mentioned earlier the proposed feature representations can be applied to n-grams of any size, although so far only unigrams have been used. Bigrams alone are not good features, but when used in conjunction with unigrams they show a slight improvement when presence as feature representation is used from 0.76 to 0.78 with SVM and from 0.63 to 0.67 with NB.