1. A hot video prediction system, comprising: a video comments database storing a plurality of video comments submitted by a plurality of users; a user social network constructor establishing a user social network of the users according to the video comments; a hot video predictor, upon receiving a new comment of a new video, determining a similar theme between the new video comment content and comment content of hot videos that have been popular for a period of time according to the user social network, and predicting whether the new video is going to be popular accordingly; a social network adaptor verifying a result of the prediction, and modifying the user social network accordingly.
1. A hot video prediction system, comprising: a video comments database storing a plurality of video comments submitted by a plurality of users; a user social network constructor establishing a user social network of the users according to the video comments; a hot video predictor, upon receiving a new comment of a new video, determining a similar theme between the new video comment content and comment content of hot videos that have been popular for a period of time according to the user social network, and predicting whether the new video is going to be popular accordingly; a social network adaptor verifying a result of the prediction, and modifying the user social network accordingly. 5. The hot video prediction system of claim 1 , further comprising a social network database for storing the user social network generated by the user social network constructor.