NDLI: GroupTie: toward hidden collusion group discovery in app stores

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GroupTie: toward hidden collusion group discovery in app stores

Content Provider	ACM Digital Library
Author	Xie, Zhen Zhu, Sencun
Abstract	The current centralized application (or app) markets provide convenient ways to distribute mobile apps. Their vendors maintain rating systems, which allow customers to leave ratings and reviews. Since positive ratings and reviews can lead to more downloads/installations and hence more monetary benefit, the rating systems have become a target of manipulation by some collusion groups hired by app developers. In this paper, we thoroughly analyze the features of hidden collusion groups and propose a novel method called \emph{GroupTie} to narrow down the suspect list of collusive reviewers for further investigation by app stores. As members of a hidden collusion group have to work together more frequently and their ratings often deviate more from apps' quality, collusive actions will enhance their relation over time. We build a relation graph named \emph{tie graph} and detect collusion groups by applying graph clustering. Simulation results show that the precision of GroupTie approaches to \$99.70\%\$ and the recall is about \$91.50\%\$. We also apply our method to detect hidden collusion groups among the reviewers of \$89\$ apps in Apple's China App Store. A large number of reviewers are discovered belonging to a large collusion group and several small groups.
Starting Page	153
Ending Page	164
Page Count	12
File Format	PDF
ISBN	9781450329729
DOI	10.1145/2627393.2627409
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2014-07-23
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Collusion groups Correlation coefficient App stores Clusters Tie graph
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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