Designing an expert system for fraud detection in private telecommunications networks

Authors:
Constantinos S. Hilas
Affiliations:
Dept. of Informatics and Communications, Technological Educational Institute of Serres, Terma Magnisias, Serres, GR-621 24, Greece
Venue:
Expert Systems with Applications: An International Journal
Year:
2009

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Abstract

Telecommunications fraud not only burdens telecom provider's accountings but burdens individual users as well. The latter are particularly affected in the case of superimposed fraud where the fraudster uses a legitimate user's account in parallel with the user. These cases are usually identified after user complaints for excess billing. However, inside the network of a large firm or organization, superimposed fraud may go undetected for some time. The present paper deals with the detection of fraudulent telecom activity inside large organizations' premises. Focus is given on superimposed fraud detection. The problem is attacked via the construction of an expert system which incorporates both the network administrator's expert knowledge and knowledge derived from the application of data mining techniques on real world data.