Group affinity based social trust model for an intelligent movie recommender system

2011 ◽  
Vol 64 (2) ◽  
pp. 505-516 ◽  
Author(s):  
Mucheol Kim ◽  
Sang Oh Park
Author(s):  
Akinboro Solomon ◽  
Emmanuel Olajubu ◽  
Ibrahim Ogundoyin ◽  
Ganiyu Aderounmu

This study designed, simulated and evaluated the performance of a conceptual framework for ambient ad hoc home network. This was with a view to detecting malicious nodes and securing the home devices against attacks. The proposed framework, called mobile ambient social trust consists of mobile devices and mobile ad hoc network as communication channel. The trust model for the device attacks is Adaptive Neuro Fuzzy (ANF) that considered global reputation of the direct and indirect communication of home devices and remote devices. The model was simulated using Matlab 7.0. In the simulation, NSL-KDD dataset was used as input packets, the artificial neural network for packet classification and ANF system for the global trust computation. The proposed model was benchmarked with an existing Eigen Trust (ET) model using detection accuracy and convergence time as performance metrics. The simulation results using the above parameters revealed a better performance of the ANF over ET model. The framework will secure the home network against unforeseen network disruption and node misbehavior.


2020 ◽  
Vol 79 (29-30) ◽  
pp. 20845-20860 ◽  
Author(s):  
Gourav Bathla ◽  
Himanshu Aggarwal ◽  
Rinkle Rani

Author(s):  
Mucheol Kim ◽  
Young-Sik Jeong ◽  
Jong Hyuk Park ◽  
Sang Oh Park

Author(s):  
Jian-Ping Mei ◽  
Han Yu ◽  
Yong Liu ◽  
Zhiqi Shen ◽  
Chunyan Miao
Keyword(s):  

Author(s):  
Li Yang ◽  
Xinxin Niu

AbstractShilling attacks have been a significant vulnerability of collaborative filtering (CF) recommender systems, and trust in CF recommender algorithms has been proven to be helpful for improving the accuracy of system recommendations. As a few studies have been devoted to trust in this area, we explore the benefits of using trust to resist shilling attacks. Rather than simply using user-generated trust values, we propose the genre trust degree, which differ in terms of the genres of items and take both trust value and user credibility into consideration. This paper introduces different types of shilling attack methods in an attempt to study the impact of users’ trust values and behavior features on defending against shilling attacks. Meanwhile, it improves the approach used to calculate user similarities to form a recommendation model based on genre trust degrees. The performance of the genre trust-based recommender system is evaluated on the Ciao dataset. Experimental results demonstrated the superior and comparable genre trust degrees recommended for defending against different types of shilling attacks.


Author(s):  
Avin Fadilla Helmi ◽  
Wahyu Widhiarso ◽  
Adelia Khrisna Putri ◽  
Ramadhan Dwi Marvianto ◽  
Acintya Ratna Priwati ◽  
...  

This study identified factors that contribute to adolescents' online trust. Two hypotheses are stated: (1) there is a significant influence of social loneliness and self-esteem toward self-disclosure; and (2) social support has a significant influence toward online trust, with self-disclosure as a mediator. 205 high school students completed a survey covering four self-rated scales: online trust, self-disclosure, social support, and loneliness. Each scale met the psychometric standards of validity and reliability. Data was analyzed using structural equation modelling (SEM). The findings confirmed both hypotheses. The Goodness of Fit as indicated by a chi-square coefficient of 345.06 (p = .00); RMSEA: .04; CFI: .98; and TLI: .98, exceeded the set criteria. The main determinant of the direct effect of social trust and online trust model (β = .35**) was self-disclosure, a mediator on the effect of social support toward online trust (β = .05). The variables which directly influenced self-disclosure were loneliness (β = -.31**), self-esteem (β = .14), and social support (β = .24**).


2011 ◽  
Vol 5 (8) ◽  
pp. 887-897 ◽  
Author(s):  
Mucheol Kim ◽  
Jiwan Seo ◽  
Sanghyun Noh ◽  
Sangyong Han

Author(s):  
Naziha Abderrahim ◽  
◽  
Sidi Mohamed Benslimane

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