XMatch: A language for satisfaction-based selection of Grid services

Issue title: Dynamic Grids and Worldwide Computing

Article type: Research Article

Authors: Andreozzi, Sergio^; | Montesi, Danilo | Moretti, Rocco^;

Affiliations: Istituto Nazionale di Fisica Nucleare (INFN) – CNAF, Viale Berti Pichat 6/2, 40127 Bologna, Italy | Department of Computer Science, University of Bologna, Mura Anteo Zamboni 7, 40127 Bologna, Italy | Department of Pure and Applied Mathematics, University of Padova, Via G. Belzoni 7, 35131 Padova, Italy

Note: [] Corresponding author: Sergio Andreozzi, Istituto Nazionale di Fisica Nucleare (INFN) – CNAF, Viale Berti Pichat 6/2, 40127 Bologna, Italy. Tel.: +39 328 8462871; Fax: +39 051 6092746; E-mail: sergio.andreozzi@cnaf.infn.it

Abstract: Grid systems enable the sharing of a large number of geographically-dispersed resources among different communities of users. They require a mapping functionality for the association of users requests expressed in terms of requirements and preferences to actual resources. This functionality should deal with a potentially high number of similar resources and with the diversity of the perceived satisfactions of users. We propose XMatch, a query language enabling the expression of the user request in terms of the expected satisfaction over XML-based representation of available resources. This language offers a compact way for users to express their preferences for Grid resources and enable the maximization of the global preference.

Keywords: Service evaluation, service selection, Grid, LSP, XQuery

Journal: Scientific Programming, vol. 13, no. 4, pp. 299-316, 2005