Abstract
As a company releases a new product service to the market, consumers often express their interests, emotional tendencies and overall evaluations over the internet through comments. The trend of comment characteristics always changes with time. Enterprises can capture the latest market demand based on the tendency explored. On the other hand, consumers can also make their own decisions by these references. However, complex information might exist in the comments and thus companies have to spend much time in analyzing comments characteristics. Furthermore, consumers should also dedicate more efforts to acquire information about product usage, feedbacks and t price from the complicated information. In order to solve the problems, this study develops a model for sentiment analysis of comments. It can be used to visuallyreveals the tendency of the comments. By applying the proposed model, enterprises can refer to the latest trend of interests, emotional tendencies and overall evaluation of consumers. As a result, new products / services can fit more to consumer needs. Moreover, the consumers can acquire useful opinions from the public in order to select more suitable products or services.