Method and System for Website User Account Management Based on Event Transition Matrixes

A method for categorizing multiple users of a website based on their respective transition patterns between successive types of user activities is implemented at a computing device having one or more processors and memory. After receiving one or more log files from a data source, the computing device generates respective event transition matrixes for multiple users in accordance with the users' event records such that each element of each respective event transition matrix includes a probability of an occurrence of two consecutive event types A and B for the same user. Based on an analysis of the multiple users' event transition matrixes, the computing device categorizes the multiple users into at least two distinct groups of users and performs one or more operations to the website's user accounts associated with one or more users from one of the groups.