Table 8. Experimental Results for Dataset1 (P: Precision, R: Recall, F: F-measure).

		Positive			Negative
Study	Technique	P	R	F	P	R	F
Kalaivani and Shunmuganathan [30]	Supervised (opinion words)	0.80	0.76	0.69	0.74	0.64	0.51
Kundi et al. [5]	Lexicon-based unsupervised (opinion words and emoticons)	0.81	0.79	0.80	0.79	0.82	0.80
Kundi et al.[3]	Lexicon-based Unsupervised (opinion words and emoticons)	0.86	0.78	0.81	0.80	0.82	0.80
Proposed	Lexicon-enhanced-Rule-based (emoticons, opinion words, modifiers, negations)	0.89	0.81	0.79	0.84	0.89	0.81