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A Model of a Trust-based Recommendation System in a Social Network


Battiston, Stefano; Schweitzer, Frank; Walter, Frank E (2008). A Model of a Trust-based Recommendation System in a Social Network. Autonomous agents and multi-agent systems, 16(1):57-74.

Abstract

In this paper, we present a model of a trust-based recommendation system on a social network. The idea of the model is that agents use their social network to reach information and their trust relationships to filter it. We investigate how the dynamics of trust among agents affect the performance of the system by comparing it to a frequency-based recommendation system. Furthermore, we identify the impact of network density, preference heterogeneity among agents, and knowledge sparseness to be crucial factors for the performance of the system. The system self-organises in a state with performance near to the optimum; the performance on the global level is an emergent property of the system, achieved without explicit coordination from the local interactions of agents.

Abstract

In this paper, we present a model of a trust-based recommendation system on a social network. The idea of the model is that agents use their social network to reach information and their trust relationships to filter it. We investigate how the dynamics of trust among agents affect the performance of the system by comparing it to a frequency-based recommendation system. Furthermore, we identify the impact of network density, preference heterogeneity among agents, and knowledge sparseness to be crucial factors for the performance of the system. The system self-organises in a state with performance near to the optimum; the performance on the global level is an emergent property of the system, achieved without explicit coordination from the local interactions of agents.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:03 Faculty of Economics > Department of Banking and Finance
Dewey Decimal Classification:330 Economics
Scopus Subject Areas:Physical Sciences > Artificial Intelligence
Scope:Discipline-based scholarship (basic research)
Language:English
Date:2008
Deposited On:28 Aug 2023 12:41
Last Modified:29 Apr 2024 01:39
Publisher:Springer
ISSN:1387-2532
OA Status:Green
Publisher DOI:https://doi.org/10.1007/s10458-007-9021-x
Other Identification Number:merlin-id:10152
  • Content: Accepted Version
  • Language: English