Using Quality of Data Metadata for Source Selection and Ranking.
George A. Mihaila, Louiqa Raschid, María-Esther Vidal · 2000
The World Wide Web has become the preferred medium for the dissemination of information in virtually every domain of activity. Standards and formats for data interchange have addressed the issue of interoperability among heterogeneous sources. However, access to data is still hindered by the challenge of locating data relevant to a particular problem. Further, after a set of relevant sources have been identified, one must still decide which source is best suited for a given task and appropriately rank these sources. WWW sources typically may cover different domains and they may differ considerably with respect to a variety of quality of data (qod) parameters which include completeness, recency of update, granularity, etc. In order to solve this problem of source selection and ranking using qod parameters, we maintain metadata about source content and quality of data - or scqd metadata. We use a data model for representing scqd metadata similar to those used in a data warehouse environm...