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www.elsevier.com/locate/fgcs From bioinformatic web portals to semantically integrated Data Grid
, 2006
"... networks ✩ ..."
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2016 Current Developments in Technology-Assisted Education (2006) Constraint determination algorithm for query reformulation for personalized educational relational databases
"... There is a huge number of existing heterogeneous information sources which could be used in an educational context. The standard approach to integrating these sources is to build a global schema that relates all of the information in the different sources, and to pose queries directly against it. Th ..."
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There is a huge number of existing heterogeneous information sources which could be used in an educational context. The standard approach to integrating these sources is to build a global schema that relates all of the information in the different sources, and to pose queries directly against it. The problem is that schema integration is usually difficult. Alternatively, the user queries can be processed in a hidden manner from the user and the requested results can be returned. In this paper, we address this problem: How to identify the sources of information that are required to answer a query and determine how the data from them should be combined to give the most precise results the user requested. In addition, we propose a personalized approach to the stated problem such that different users may be returned different results to the same query based on their preferences.
