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Exploiting the Beta Distribution-Based Reputation Model in Recommender System [chapter]

Ahmad Abdel-Hafez, Yue Xu
2015 Lecture Notes in Computer Science  
The ratings aggregation process is a vital component of a reputation system. Reputation models available do not consider statistical data in the rating aggregation process.  ...  Reputation systems are employed to measure the quality of items on the Web.  ...  The Beta Distribution-Based Reputation Model In this section, we introduce a new rating aggregation method that generates item reputation scores.  ... 
doi:10.1007/978-3-319-26350-2_1 fatcat:vpwf2hvdfvcw3lwyuufhq2u7bm

RDAS: Reputation-Based Resilient Data Aggregation in Sensor Network

Carlos R. Perez-Toro, Rajesh K. Panta, Saurabh Bagchi
2010 2010 7th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON)  
Nodes form part of a distributed reputation system, where they share information about other node's performance in reporting accurate data and use the reputation ratings to suppress the reports from malicious  ...  In this paper we present RDAS, a robust data aggregation protocol that uses a reputation-based approach to identify and isolate malicious nodes in a sensor network.  ...  In this paper we present the design of a protocol called Reputation-based Resilient Data Aggregation System (RDAS) that develops a distributed reputation system and applies it for secure data aggregation  ... 
doi:10.1109/secon.2010.5508273 dblp:conf/secon/Perez-ToroPB10 fatcat:u3katzt25ngepoe3oppriqtj44

An accurate rating aggregation method for generating item reputation

Ahmad Abdel-Hafez, Yue Xu, Audun Josang
2015 2015 IEEE International Conference on Data Science and Advanced Analytics (DSAA)  
BETA DISTRIBUTION-BASED REPUTATION MODEL In this section, we introduce a new rating aggregation method that generates item reputation scores.  ...  Normal Distribution-Based Reputation Model In [13] , we proposed the use of the probability density function (PDF) of the normal distribution to generate weights for the ratings of an item and then produce  ... 
doi:10.1109/dsaa.2015.7344804 dblp:conf/dsaa/Abdel-HafezXJ15 fatcat:edw3nttqyzhotm5cax6cwbruxq

Literature Analysis on Reputation Models for Feedback in E-commerce
IJARCCE - Computer and Communication Engineering

Oleena Thomas, Sumy Joseph
2015 IJARCCE  
But models differ between each other by the methods they opt to calculate the trustworthiness measure for different sellers. Based on such calculations the ranking of the sellers will also vary.  ...  Trust and reputation are decisive factors in internet service provision. The concept is to let the parties rate each other.  ...  The system is based on the beta probability density function to combine feedback and to derive reputation ratings.  ... 
doi:10.17148/ijarcce.2015.4167 fatcat:ix2m4fgf25emzlv6noaemexd2y

Review Of Trust Models In Wireless Sensor Networks

V. Uma Rani, K. Soma Sundaram
2014 Zenodo  
It supports the decision making processes in wireless sensor networks such as pre key-distribution, cluster head selection, data aggregation, routing and self reconfiguration of sensor nodes.  ...  To solve this issue, a trust model is required to find malicious, selfish and compromised insiders by evaluating trust worthiness sensors from the network.  ...  The reliable data aggregation and transmission protocol, called RDAT [14] is a distributed functional based beta reputation model.  ... 
doi:10.5281/zenodo.1092174 fatcat:u5kvi6ozhzg6xivywxyasytawy

Reusability for Trust and Reputation Systems [chapter]

Johannes Sänger, Günther Pernul
2014 IFIP Advances in Information and Communication Technology  
In this work, we aim to foster reuse in respect of trust and reputation systems by providing a hierarchical component taxonomy of computation engines which serves as a natural framework for the design  ...  In order to assist the design process we, furthermore, provide a component repository that contains design knowledge on both a conceptual and an implementation level.  ...  All models based on the beta probability density function (beta PDF) are examples for models simply using Bayesian probability. The beta PDF represents the probability distributions of binary events.  ... 
doi:10.1007/978-3-662-43813-8_3 fatcat:n4iq4el7fndrzhipqowrkouhva

A reference model for reputation systems

Sokratis Vavilis, Milan Petković, Nicola Zannone
2014 Decision Support Systems  
We demonstrate its applicability by analyzing and classifying a number of existing reputation systems. Our framework can serve as a reference model for the analysis of reputation systems.  ...  The aim of this survey is to propose a framework for the analysis of reputation systems.  ...  Metrics can be based on simple summation or average of ratings [16] , fuzzy logic [17, 18] , flow-based models [19, 20, 21, 22] , probabilistic models such as Bayesian systems [23, 24, 25] , beta probability  ... 
doi:10.1016/j.dss.2014.02.002 fatcat:mv4w76zidzezhmchjgpnkqiv2e

A Medical Data Reliability Assessment Model

Bandar Alhaqbani, Audun Jøsang, Colin Fidge
2009 Journal of Theoretical and Applied Electronic Commerce Research  
Traditional security mechanisms are designed to satisfy confidentiality, integrity, and availability requirements, but they fail to provide a measurement tool for data reliability from a data entry perspective  ...  In this paper, we introduce a Medical Data Reliability Assessment (MDRA) service model to assess the reliability of medical data by evaluating the trustworthiness of its sources, usually the healthcare  ...  Acknowledgements We wish to thank the anonymous reviewers for their many helpful comments and suggestions.  ... 
doi:10.4067/s0718-18762009000200006 fatcat:hcguvuijo5bo3icfqgfhknhage

Advanced Features in Bayesian Reputation Systems [chapter]

Audun Jøsang, Walter Quattrociocchi
2009 Lecture Notes in Computer Science  
In particular we demonstrate the importance of base rates during bootstrapping, for handling rating scarcity and for expressing long term trends.  ...  The purpose of this paper is to provide a concise overview of the rich set of features that characterizes Bayesian reputation systems.  ...  It can be noted that the individual base rate a y,t is partly a function of the community base rate a, which thereby constitutes a two-level base rate model.  ... 
doi:10.1007/978-3-642-03748-1_11 fatcat:fmj3nvvtc5cppfseun4yemeype

Dirichlet Reputation Systems

Audun Josang, Jochen Haller
2007 The Second International Conference on Availability, Reliability and Security (ARES'07)  
The basic idea is to have a mechanism for rating services on various aspects, and a way of computing reputation scores based on the ratings from many different parties.  ...  This article presents a type of reputation system based on the Dirichlet probability distribution which is a multinomial Bayesian probability distribution.  ...  The same principle is also used for binomial Bayesian reputation systems based on the Beta distribution [8] , [4] , [9] , [10] . A.  ... 
doi:10.1109/ares.2007.71 dblp:conf/IEEEares/JosangH07 fatcat:uivk6rtbdvbazknrwdlkmi6aba

Reputation assessment: a review and unifying abstraction

Phillip Taylor, Lina Barakat, Simon Miles, Nathan Griffiths
2018 Knowledge engineering review (Print)  
These experiences are typically aggregated in a trust and reputation model, of which there are several types that focus on different aspects.  ...  Based on these discussions, a unifying abstraction is presented for trust and reputation systems, which is demonstrated by instantiating it with a broad range of reputation systems found in the literature  ...  [7] introduce stereotypes to BRS using a separate stereotype model to alter the prior of the Beta distribution.  ... 
doi:10.1017/s0269888918000097 fatcat:p2scpuglm5enba65ur5euck7x4

Hedaquin: A Reputation-based Health Data Quality Indicator

Ton van Deursen, Paul Koster, Milan Petković
2008 Electronical Notes in Theoretical Computer Science  
Firstly, Hedaquin supports the automatic calculation of a rating based on a repeated measurement. Secondly, certificates for the user such as diplomas are taken into account.  ...  This indication is based on the reputation of the supplier and on metadata provided by measurement devices.  ...  The Beta reputation system is based on the beta probability density function which can be used to represent probability distributions of binary events.  ... 
doi:10.1016/j.entcs.2007.12.025 fatcat:yet7xzsswjglrjpyeofbvwqm3a

Logistic Regression Trust–A Trust Model for Internet-of-Things Using Regression Analysis

Feslin Anish Mon Solomon, Godfrey Winster Sathianesan, R. Ramesh
2023 Computer systems science and engineering  
But, the interaction is successful only based on the trust that each device has on another. Thus trust is very much essential for a social network.  ...  To make our stand strong on regression support to trust, we have compared the performance with equivalent sound Bayes analysis using Beta distribution.  ...  Bayesian Theory for Modelling Trust (Basic Model) A Bayesian model [32] uses Beta probability density function. It is a probabilistic model that relies on a Beta Function.  ... 
doi:10.32604/csse.2023.024292 fatcat:eeqztxrz6nhg3fudwjdmb6a6d4

Online Reputation Model Using Multiple Quality Factors

Mohammad Azzeh, Mohammad Hijjawi, Ahmad M Altamimi
2018 International Journal on Advanced Science, Engineering and Information Technology  
This research study looks at various aspects of reviewers' ratings and proposes a new reputation model that attempts to assess the reviewer reputation by combining four factors through a Fuzzy model.  ...  Users on the internet are looking for ways to minimize their experiences in performing online transactions. Reputation systems as a decision support tool are trying to facilitate online transactions.  ...  ACKNOWLEDGMENT The authors are grateful to the Applied Science Private University, Amman, Jordan, for the financial support granted to cover the publication fee of this research article.  ... 
doi:10.18517/ijaseit.8.6.6259 fatcat:qqawvugwb5ef7dakrl72ebelpy

Trust networks: Interpersonal, sensor, and social

Krishnaprasad Thirunarayan, Pramod Anantharam
2011 2011 International Conference on Collaboration Technologies and Systems (CTS)  
Unfortunately, there is neither a universal notion of trust that is applicable to all domains nor a clear explication of its semantics or computation in many situations.  ...  In this beginner's level tutorial, we motivate the trust problem, explain the relevant concepts, summarize research in modeling trust and gleaning trustworthiness, and discuss challenges confronting us  ...  ACKNOWLEDGEMENTS The authors would like to thank Cory Henson and Professor Amit Sheth for valuable discussions that shaped our thoughts and made this introductory tutorial presentation more accessible  ... 
doi:10.1109/cts.2011.5928659 dblp:conf/cts/ThirunarayanA11 fatcat:lvno3qenizfdtm2jexrflkljia
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