Table 3.

All reviewed papers categorized by ML and NLP method used

Approach	Method	Papers
Feature based	Traditional ML	41,68–109
	Neural Network	100,109–114
	Tools	115
NLP	Traditional ML	39,51,116–126
	Neural Network	27,39,48,51,127–133
	Topic modeling	116,134–137
	Tools	40,138–147