ABSTRACT
With the development of social network, weibo has gained its popularity in China. Many people use it to communicate with friends or they publish their opinions about public events on it. It is reported that there are more than 556,000,000 users of Sina weibo. [1]The ways in which people respond to a message of Sina weibo include retweet, like, comment, and add to favorite. Individuals can publish their opinions when they retweet the message. They may agree on the original message, have distinct opinions, or make more objective comments. There are many factors that may contribute to the sentiment polarity of the comments: the attributes of the original message, from whom the messages are retweeted, the standpoint of the author, and so on.
