Creating Evolving User Behavior Profiles Automatically Articles uri icon

publication date

  • May 2012

start page

  • 854

end page

  • 867

issue

  • 5

volume

  • 24

international standard serial number (ISSN)

  • 1041-4347

electronic international standard serial number (EISSN)

  • 1558-2191

abstract

  • Knowledge about computer users is very beneficial for assisting them, predicting their future actions or detecting masqueraders. In this paper, a new approach for creating and recognizing automatically the behavior profile of a computer user is presented. In this case, a computer user behavior is represented as the sequence of the commands she/he types during her/his work. This sequence is transformed into a distribution of relevant subsequences of commands in order to find out a profile that defines its behavior. Also, because a user profile is not necessarily fixed but rather it evolves/changes, we propose an evolving method to keep up to date the created profiles using an Evolving Systems approach. In this paper, we combine the evolving classifier with a trie-based user profiling to obtain a powerful self-learning online scheme. We also develop further the recursive formula of the potential of a data point to become a cluster center using cosine distance, which is provided in the Appendix. The novel approach proposed in this paper can be applicable to any problem of dynamic/evolving user behavior modeling where it can be represented as a sequence of actions or events. It has been evaluated on several real data streams.

keywords

  • evolving fuzzy systems; fuzzy-rule-based (frb) classifiers; user modeling