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• W3157942764 abstract "Implicit Social Network is a connected social structure among a group of persons, where two of them are linked if they have some common interest. One real-life example of such networks is the implicit social network among the customers of an online commercial house, where there exists an edge between two customers if they like similar items. Such networks are often useful for different commercial applications such as target advertisement, viral marketing, etc. In this article, we study two fundamental problems in this direction. The first one is that, given the user-item rating data of an E-Commerce house, how we can design implicit social networks among its users and the second one is at the time of designing itself can we obtain the connectivity information among the users. Formally, we call the first problem as the Implicit User Network Design Problem and the second one as Implicit User Network Design with Connectivity Checking Problem. For the first problem, we propose three different algorithms, namely ‘Exhaustive Search Approach’, ‘Clique Addition Approach’, and ‘Matrix Multiplication-Based Approach’. For the second problem, we propose two different approaches. The first one is the sequential approach: designing and then connectivity checking, and the other one is a concurrent approach, which is basically an incremental algorithm that performs designing and connectivity checking simultaneously. Proposed methodologies have experimented with three publicly available rating network datasets such as Flixter, Movielens, and Epinions. Reported computational time shows that the ‘Clique Addition Approach’ is the fastest one for designing the implicit social network. For designing and connectivity checking problem the concurrent approach is faster than the other one. We have also investigated the scalability issues of the algorithms by increasing the data size." @default.
• W3157942764 created "2021-05-10" @default.
• W3157942764 creator A5033218913 @default.
• W3157942764 date "2021-05-06" @default.
• W3157942764 modified "2023-09-27" @default.
• W3157942764 title "Designing and connectivity checking of implicit social networks from the user-item rating data" @default.
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• W3157942764 doi "https://doi.org/10.1007/s11042-021-10876-2" @default.
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