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A Multi-Agent Approach for Trust-Based Service Discovery and Selection in Social Networks

Louati, Amine; El Haddad, Joyce; Pinson, Suzanne (2015), A Multi-Agent Approach for Trust-Based Service Discovery and Selection in Social Networks, Scalable Computing: Practice and Experience, 16, 4, p. 381-401. 10.12694/scpe.v16i4.1129

Type
Article accepté pour publication ou publié
Date
2015
Journal name
Scalable Computing: Practice and Experience
Volume
16
Number
4
Publisher
SCPE
Pages
381-401
Publication identifier
10.12694/scpe.v16i4.1129
Metadata
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Author(s)
Louati, Amine
Laboratoire d'analyse et modélisation de systèmes pour l'aide à la décision [LAMSADE]
El Haddad, Joyce
Laboratoire d'analyse et modélisation de systèmes pour l'aide à la décision [LAMSADE]
Pinson, Suzanne
Laboratoire d'analyse et modélisation de systèmes pour l'aide à la décision [LAMSADE]
Abstract (EN)
Service discovery and selection approaches are often done using a centralized registry-based technique, which only captures common Quality of Service criteria. With more and more services offered via social networks, these approaches are not able to evaluate trust in service providers and often fail to comply with new requester's expectations. This is because theses approaches are not able (i) to take into consideration the social dimension and (ii) to capitalize on information resulting from previous experiences. To address these challenges, we propose the use of multi-agent systems as they have demonstrated the capability to use previous interactions, knowledge representation and distributed reasoning, as well as social metaphors like trust. More precisely, in this paper, we enhance service discovery and selection processes by integrating the societal view in trust modeling. Based on relationships between agents, their previous experiences and extracted information from social network, we define a trust model built upon social, expert and recommender-based components. The social-based component judges whether the provider is worthwhile pursuing before using his services (viz. trust in sociability). The expert-based component estimates whether the service behaves well and as expected (viz. trust in expertise). The recommender-based component assesses for an agent whether one's can rely on its recommendations (viz. trust in recommendation). However, when searching for a service in a social network, agents (service requester and service providers) may have no direct interactions or previous experiences. This requires a method to infer trust between them. Based on a probabilistic model, we estimate trust between non adjacent agents while taking into account roles (recommender or provider) of intermediate agents. Moreover, we propose a distributed algorithm for trustworthy service discovery and selection using referral systems in social networks. Experiments demonstrate that our approach is effective and outperforms existing ones, and can deliver more trustworthy results.
Subjects / Keywords
Service Discovery and Selection; Multi Agent System; Trust Model; Referral Systems; Social Networks

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    Towards Agent-based and Trust-oriented Service Discovery Approach in Social Networks 
    Louati, Amine; El Haddad, Joyce; Pinson, Suzanne (2014) Communication / Conférence
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