Table 1.

Average processing time of pre-processing step

Dataset name	Average processing time of sample (ms)
	Stop word removal	Word correction	Lemmatization	Total pre-processing
Ott	0.04	0.77	0.04	0.79
Yelp	0.32	9.55	0.36	9.63
Amazon	1.53	86.43	2.68	86.44
TripAdvisor	1.56	52.42	1.69	52.44
IMDb	0.23	0.89	0.08	0.92