International Journal of Information and Electronics Engineering
The internet could be a perfect platform for spreading the electronic Word Of Mouth (e-WOM). Consumers not only heavily depended comments regarding the products or services in social media to make their purchase decisions. The negative product reviews could cause a negative impact on business products. When online reviews increase, inevitably there will produce imbalanced class data, in which the amount of positive comments (negative comments) is far larger than the number of negative comments (positive comments).