ADBIS'06 Proceedings of the 10th East European conference on Advances in Databases and Information Systems
Optimization of automatic navigation to hidden web pages by ranking-based browser preloading
DEECS'06 Proceedings of the Second international conference on Data Engineering Issues in E-Commerce and Services
NGITS'06 Proceedings of the 6th international conference on Next Generation Information Technologies and Systems
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Optimization of execution plans in information mediators is a critical task, specially when sources are remote and semistructured, as in the case of transactional web sites. Lack of Quality of Service in HTTP connections does not ease the measurement of the mediated query performance. Different solutions based on relational and hierarchical optimization techniques have been proposed, mainly in terms of time and space. This article integrates some of these techniques by using a specialized cost repository but, more importantly, defines a physical layer optimization cost model by means of a configurable pool of browsers , which improves dramatically query execution time in web mediators.