On the Feature Selection and Classification Based on Information Gain for Document Sentiment Analysis

Algorithm 2

IG-based classification.

(1) procedure IG-BASED–CLASSIFIER(input: Feature Vector: Vocabulary

   × Number of ,  output: Label: positive or )

(2)  for each document in featurevector  do

(3)   for  each vocabinVocabulary  do

(4)    if   is positive – features  then

(5)     

(6)    else

(7)     

(8)    end if

(9)    end for

(10)  if    then

(11)      ′positive′

(12)  else

(13)      ′negative′

(14)  end if

(15)  end for

(16) end procedure