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In grid computing, auction mechanisms have become a very important method in order to solve distributed scheduling problem. In this paper, we use the average budget formula to express the user preference. Meanwhile, we introduce the risk factor in utility function for improving the transaction successful rate. Our model has improved the resource allocation(More)
With the increase in size, complexity, and heterogeneity of grid computing environments, we argue that, in addition to performance metrics, the resource allocation algorithms should be designed for robustness. That is, they should have the ability to maintain performance under a wide variety of operating conditions. Although robustness is easy to define,(More)
The dynamical Grid environment requires flexible and adaptive workflow system. This paper integrates Agents and Web Services into Grid Service Workflow System based on Colored Petri Nets. The combination of Agents and Web Services enhances the adaptability and dynamics of the framework. How Web Service can be located dynamically and the services provided by(More)
In grid computing, resource management has been paid a great deal of attention. Market-based mechanisms such as auctions are being studied as an appropriate means. In order to promote the user transaction positivity it is required to manage the bidding policy of the agent. Therefore, we introduce the budget factor and risk factor in auction mechanism for(More)
In this paper, we introduce a model for deployment and hosting of a hierarchical gird service wherein the service provider must pay to a resource provider for the use of resources. Our model produces policies that balance the number of required resources with the desire to keep the cost of hosting the service to a minimum. In each layer of our framework, we(More)
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