A Reputation-Based Mechanism for Dynamic Virtual Organization Formation in Grids

Abstract

Abstract-In order to execute large scale applications programs in grids, several Grid Service Providers (GSPs) pool their resources together by forming Virtual Organizations (VOs). Forming such VOs is a challenging problem especially when the trust relationships among GSPs have to be considered. In this paper, we model the formation of VOs in grids by considering the trust and reputation of the participating GSPs. We design a mechanism for VO formation that enables the GSPs with high reputation to organize into a VO reducing the cost of execution and guaranteeing the maximum profit for the participating GSPs. Furthermore, the mechanism guarantees that the formed VO is stable, that is, the GSPs that are part of the VO do not have incentives to break away from it. We perform extensive simulation experiments using real workload traces to characterize the properties of the proposed mechanism. The results show that the mechanism produces stable VOs composed of GSPs with high reputation that obtain high individual profits.

Uma Revisão Sistemática sobre Abordagens em Organizações Virtuais no Contexto de Confiança, Reputação e Computação em Nuvem

“…Mashayekhy e Grosu [47] apresentam um framework para a criação de OVs utilizando a reputação dos provedores de serviço de grid, para a composição da OV, em que o valor de reputação é calculado com base no histórico de comportamentos desse provedor. Papaioannou e Stamoulis [48] apresentam um sistema de reputação que usa como métrica de reputação o desempenho individual de cada agente em uma OV baseada em grid.…”

A Classification Taxonomy for Reputation and Trust Systems Applied to Virtual Organizations

“…Through the analyzed articles in the systematic review [2,4,5,7,8,11,[17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32], and the review articles [1,6,[13][14][15]33] that presented classification characteristics for reputation and trust system in general, a taxonomy was designed to classify and compare the works that are applied in Virtual Organization's context.…”

A Confidence Indicator Model for Virtual Organization Creation in Cloud Computing Environment

“…Particularly, during the several processes of a VO, this confidence indicator can be monitored and updated periodically allowing to identify whether a cloud computing provider continues meeting the needs of trusting regarding the established requirements by the collaboration opportunity. A reputation system using this confidence indicator can support and feed the whole trusting system [19].…”