Fraud Detection Call Detail Record Using Machine Learning in Telecommunications Company

Fraud Detection Call Detail Record Using Machine Learning in Telecommunications Company

Volume 5, Issue 4, Page No 63-69, 2020

Author’s Name: Ma’shum Abdul Jabbar1,a), Suharjito2

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1Computer Science Department, Binus Graduate Program – Master of Computer Science, Bina Nusantara University, Jakarta 11480, Indonesia
2Computer Science Department, Binus Online Learning, Bina Nusantara University, Jakarta 11480, Indonesia

a)Author to whom correspondence should be addressed. E-mail: mashum.jabbar@binus.ac.id

Adv. Sci. Technol. Eng. Syst. J. 5(4), 63-69 (2020); a  DOI: 10.25046/aj050409

Keywords: Fraud, Call Detail Record, K-Means, DBSCAN

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Abstract

Fraud calls have a serious impact on telecommunications operator revenues. Fraud detection is very important because service providers can feel a significant loss of income. We conducted a fraud research case study on one of the operators that experienced fraud in 2009 and 2018. Call Detail Record (CDR) containing records of customer conversations such as source and destination number, call start time, duration of calls at the operator can be a source of information to use in fraud detection. The method used in this study uses machine learning with unsupervised learning techniques which are quite popular methods used in fraud detection. The purpose of this study is to propose an effective method that can be applied to detect fraud on the CDR. Variables used include caller number, number dialled, duration, fee and destination city of the dataset totalling 11,418 rows from record periods 01 to 31 May 2018. In analyzing our CDR using the K-Means and DBSCAN algorithms, we then evaluate the results to calculate accuracy by comparing to actual fraud data. Based on evaluations using confusion matrix on actual CDR fraud, we obtained the K-Means algorithm to show a better accuracy value to model fraud on telecommunications CDR compared to DBSCAN.

Received: 13 May 2020, Accepted: 19 June 2020, Published Online: 06 July 2020

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