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Reasoning about Advisors for Seller Selection in E-Marketplaces via POMDPs

Frans A. Oliehoek, Ashwini A. Gokhale, and Jie Zhang. Reasoning about Advisors for Seller Selection in E-Marketplaces via POMDPs. In 15th International Workshop on Trust in Agent Societies (TRUST), pp. 67–78, June 2012.

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Abstract

In an e-marketplace populated with a large number of sellers, some of which may be dishonest, the selection of good sellers to do business with is crucial but challenging especially when buyers do not have much experience with these sellers. In this paper we introduce the SALE POMDP, a framework for the seller selection problem that allows the decision maker to reason both about the quality of the sellers, as well as the trustworthiness of the advisors. In particular, the framework allows the agent to ask advisors about the trustworthiness of other advisors while still offering the benefit of optimally trading off information gathering and exploitation of knowledge as afforded by a POMDP based approach. Via this model, we present a preliminary investigation on the benefit of reasoning about trustworthiness of advisors. We also demonstrate how this enables incorporation of trust propagation as an integral part of the decision making process.

BibTeX Entry

@InProceedings{Oliehoek12TRUST,
    author =    {Frans A. Oliehoek and Ashwini A. Gokhale and Jie Zhang},
    title =     {Reasoning about Advisors for Seller Selection in
                 E-Marketplaces via {POMDP}s},
    booktitle =  {15th International Workshop on Trust in Agent Societies (TRUST)},
    month =     jun,
    year =      2012,
    pages =     {67--78},
    keywords =  {workshop},
    abstract = 	 {
        In an e-marketplace populated with a large number of sellers,
        some of which may be dishonest, the selection of good sellers
        to do business with is crucial but challenging especially when
        buyers do not have much experience with these sellers. In this
        paper we introduce the SALE POMDP, a framework for the seller
        selection problem that allows the decision maker to reason
        both about the quality of the sellers, as well as the
        trustworthiness of the advisors.  In particular, the framework
        allows the agent to ask advisors about the trustworthiness of
        other advisors while still offering the benefit of optimally
        trading off information gathering and exploitation of
        knowledge as afforded by a POMDP based approach. Via this
        model, we present a preliminary investigation on the benefit
        of reasoning about trustworthiness of advisors. We also
        demonstrate how this enables incorporation of trust
        propagation as an integral part of the decision making
        process.
    },
}

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