... invalid, and as a result, may become non-interpretable. In this paper, we address precisely this problem, validity of data instances ... one component imply semantic changes to other components in the ontology. Third, we propose a validity identification approach that ...
Publication - cat - 04/17/2013 - 13:27 - 0 comments - 0 attachments
... to a perpetual evolution, which is particularly pressing in Web Information Systems, due to their distributed and often collaborative ... logical independence, and auditability of the process. In fact, PRISM exploits recent theoretical results on mapping composition, ...
Publication - krlis1337 - 04/17/2013 - 11:05 - 0 comments - 0 attachments
... have led to the adoption of data integration systems in order to deal with information extraction from disparate sources. The ... and ontologies has been recognized as a cornerstone issue in bringing in legacy data with formal semantic meaning. However, our knowledge ...
Publication - cat - 04/17/2013 - 09:49 - 0 comments - 0 attachments
... Schema evolution poses serious challenges in historical data management. Traditionally the archival data has been (i) ... or (ii) maintained under the original schema version in which they firstly appeared, leading to a perfect archival quality, but to a ...
Publication - krlis1337 - 04/17/2013 - 07:27 - 0 comments - 0 attachments
... Ontology evolution is increasingly gaining momentum in the area of Semantic Web research. Current approaches target the evolution in terms of either content, or change management, without covering both aspects ...
Publication - cat - 04/17/2013 - 05:49 - 0 comments - 0 attachments
... differences between (two) versions of the same ontology in order to store or visualize their deltas is a challenging task for e-science. In this paper, we focus on languages allowing the formulation of concise and ...
Publication - cat - 04/17/2013 - 05:49 - 0 comments - 1 attachment
... a14-sockut.pdf 865.38 KB In practice, any database management system sometimes needs reorganization, that is, a change in some aspect of the logical and/or physical arrangement of a database. In ...
Publication - cat - 04/16/2013 - 19:49 - 0 comments - 1 attachment
... Hot Topics In Software Upgrade URL: ... evolution process is the source of incessant problems in the life of information systems and a major stumbling block that prevent ...
Publication - krlis1337 - 04/16/2013 - 05:16 - 0 comments - 0 attachments
... 10 - 49 In this paper, we discuss the problem of performing impact prediction for changes that occur in the schema/structure of the data warehouse sources. We abstract ... of our approach over real-world ETL workflows used in the Greek public sector. (Data Warehouses, ETL, Evolution, Impact of ...
Publication - gpapas - 04/16/2013 - 04:05 - 0 comments - 0 attachments
... Numerous ontologies have recently been developed in life sciences to support a consistent annotation of biological objects, such ... web interface to explore information about changes in current life science ontologies. It is available at ...
Publication - hartung - 04/15/2013 - 23:27 - 0 comments - 1 attachment
