| 摘要 |
A method includes collecting user interaction data for one or more users in an extended social network, clustering each of the one or more users into one or more groups of users based on the collected user interaction data for each user, wherein each of the one or more users is clustered into no more than one group of the one or more groups of users, monitoring, over a time period, a change in a size of each group of users at one or more increments of the time period and generating observation information for each group of users during each of the one or more increments of the time period, wherein the observation information is based on the monitored change in size of each group of users. |
