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A cloud theory-based trust computing model in social networks
Shandong Normal University, CHI.
Shandong Normal University, CHI.
UC Davis, USA.
Shandong Normal University, CHI.
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2017 (English)In: Entropy, ISSN 1099-4300, Vol. 19, no 1, 11Article in journal (Refereed) Published
Abstract [en]

How to develop a trust management model and then to efficiently control and manage nodes is an important issue in the scope of social network security. In this paper, a trust management model based on a cloud model is proposed. The cloud model uses a specific computation operator to achieve the transformation from qualitative concepts to quantitative computation. Additionally, this can also be used to effectively express the fuzziness, randomness and the relationship between them of the subjective trust. The node trust is divided into reputation trust and transaction trust. In addition, evaluation methods are designed, respectively. Firstly, the two-dimension trust cloud evaluation model is designed based on node's comprehensive and trading experience to determine the reputation trust. The expected value reflects the average trust status of nodes. Then, entropy and hyper-entropy are used to describe the uncertainty of trust. Secondly, the calculation methods of the proposed direct transaction trust and the recommendation transaction trust involve comprehensively computation of the transaction trust of each node. Then, the choosing strategies were designed for node to trade based on trust cloud. Finally, the results of a simulation experiment in P2P network file sharing on an experimental platform directly reflect the objectivity, accuracy and robustness of the proposed model, and could also effectively identify the malicious or unreliable service nodes in the system. In addition, this can be used to promote the service reliability of the nodes with high credibility, by which the stability of the whole network is improved. © 2016 by the authors.

Place, publisher, year, edition, pages
2017. Vol. 19, no 1, 11
Keyword [en]
Cloud model, Reputation trust, Social network, Transaction trust, Trust evaluation
National Category
Other Computer and Information Science
Identifiers
URN: urn:nbn:se:bth-13830DOI: 10.3390/e19010011ISI: 000392978500011Scopus ID: 2-s2.0-85009241681OAI: oai:DiVA.org:bth-13830DiVA: diva2:1068370
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Open access

Available from: 2017-01-25 Created: 2017-01-25 Last updated: 2017-02-24Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf