A dynamic awareness model for service-based collaborative grid application in access grid

Authors:
Xiaowu Chen;Xiangyu Ji;Qinping Zhao
Affiliations:
The State Key Laboratory of Virtual Reality Technology and Systems, School of Computer Science and Engineering, Beihang University, Beijing, P.R. China;The State Key Laboratory of Virtual Reality Technology and Systems, School of Computer Science and Engineering, Beihang University, Beijing, P.R. China;The State Key Laboratory of Virtual Reality Technology and Systems, School of Computer Science and Engineering, Beihang University, Beijing, P.R. China
Venue:
GPC'08 Proceedings of the 3rd international conference on Advances in grid and pervasive computing
Year:
2008

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Abstract

Access Grid is an ensemble of resources that can provide an immersive, interactive, and collaborative environment for grid applications. Collaborative awareness support is a basic requirement of Access Grid, and is needed to provide adequate awareness information for collaborators to effectively cooperate with grid applications. However, most existing collaborative awareness models are unable to characterize the dynamic relationships between collaborators and their tasks with the standards of OGSA and WSRF. Therefore, this paper presents a dynamic collaborative awareness model, which characterizes above dynamic relationships for service-based collaborative grid applications in Access Grid. Based on the dynamic properties of services and the relationships between collaborators and services, this model firstly calculates the degrees of correlations between the actions of collaborators, and quantifies the intensities of each collaborator's awareness of other collaborators' actions, secondly divides awareness spaces by comparing the awareness intensities with their thresholds, thirdly selects and filters cooperation information according to the awareness spaces. Finally, the usability of this model is evaluated with the heuristic method, and an experiment is given to demonstrate that this model can increase the efficiency of cooperative work in Access Grid.