Optimization of sentiment analysis using machine learning classifiers

Table 2 Initial four reviews of training set and two reviews test set

Set	Sentence	Review	Class
Train	1	Horrible acting and bad writing	Neg
	2	I never did work out what the dog death scene was all about!	Neg
	3	The trailer is exciting but very misleading	Neg
	4	The basic structure of storyline is good	Pos
Test	1	The effective start and a very detective story	Pos
Test	2	An evening locked up in the toilet is more enjoyable	Pos

Second review of test set is negative but Naïve Bayes is lacking in context based sentiment classification