Title: FR trust: a fuzzy reputation-based model for trust management in semantic P2P grids

Authors: Saeed Javanmardi; Mohammad Shojafar; Shahdad Shariatmadari; Sima S. Ahrabi

Addresses: Department of Computer Engineering, Islamic Azad University, Dezful Branch, Dezful, Iran ' Department of Information Engineering, Electronic and Telecommunication (DIET), Sapienza University of Rome, Rome, Italy ' Department of Computer Science and Information Technology, University Putra Malaysia, Serdang, Malaysia ' Department of Mathematic, Faculty of Science, University Technology Malaysia, 81310 UTM Johor Bahru, Johor Darul Takzim, Malaysia

Abstract: A P2P grid is a special case of grid networks in which P2P communications are used for communication between nodes and trust management. This technology allows creation of a network with greater distribution and scalability. Semantic grids have appeared as an expansion of grid networks in which rich resource metadata are revealed and clearly handled. In a semantic P2P grid, nodes are clustered into different groups based on the semantic similarities between their services. This paper proposes a reputation model for trust management in a semantic P2P grid. We use fuzzy theory, in a trust overlay network named FR TRUST that models the network structure and the storage of reputation information. We present a reputation collection and computation system for semantic P2P grids. The system uses fuzzy theory to compute a peer trust level, which can be either: low, medium, or high. Experimental results demonstrate that FR TRUST combines desirable good computational complexity with high-ranking accuracy.

Keywords: fuzzy theory; ontology; P2P grids; peer-to-peer; fuzzy modelling; reputation modelling; trust management; semantic grids; fuzzy logic; trust overlay networks; network structure; reputation information storage; grid networks.

DOI: 10.1504/IJGUC.2015.066397

International Journal of Grid and Utility Computing, 2015 Vol.6 No.1, pp.57 - 66

Received: 05 Aug 2013
Accepted: 19 Dec 2013

Published online: 18 Dec 2014 *

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