Table 6.

Result of introducing SMOTE-OverSampler, RandomUnderSampler, and bagging to the previous method [26]. Estimation values are averaged over MQ and NQ.

	Not Manipulated	OverSampler	UnderSampler	UnderSampler and Bagging	Over, UnderSampler, and Bagging
Accuracy	0.65	0.65	0.46	0.44	0.58
F1-measure
Bad	0.27	0.37	0.41	0.43	0.47
Neutral	0.24	0.37	0.38	0.35	0.38
Good	0.76	0.75	0.54	0.49	0.66