A model of a trust-based recommendation system on a social network

被引：241
作者：
Walter, Frank Edward [1 ]
Battiston, Stefano [1 ]
Schweitzer, Frank [1 ]
机构：
[1] ETH, Chair Syst Design, CH-8032 Zurich, Switzerland
来源：
AUTONOMOUS AGENTS AND MULTI-AGENT SYSTEMS | 2008年 / 16卷 / 01期
基金：
美国国家卫生研究院;
关键词：
recommender system; trust; social network;
D O I：
10.1007/s10458-007-9021-x
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
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.
引用
收藏
页码：57 / 74
页数：18
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