The notion of Federated Data Warehouse Architecture was suggested for various reasons: bigger autonomy of divisions in an organization, better adaptation to user needs, bigger effi...
There are principal differences between the relational model and XML's tree model. This causes problems in all cases where information from these two worlds has to be brought...
In this work, we show that Kleinberg’s hubs and authorities model is closely related to both correspondence analysis, a well-known multivariate statistical technique, and a parti...
In this paper, we deal with the problem of performing what-if analysis for changes that occur in the schema/structure of the data warehouse We abstract software modules, queries, r...
George Papastefanatos, Panos Vassiliadis, Alkis Si...
We investigate the problem of acoustic modeling in which prior language-specific knowledge and transcribed data are unavailable. We present an unsupervised model that simultaneou...