... for discovering semantic correspondences among elements in many data-shared applications. Most of existing schema matching algorithms produce scores between schema elements resulting in discovering only simple matches. Such results partially solve the problem. ...
Publication - alsayed - 07/28/2016 - 08:29 - 0 comments - 0 attachments
... individual matchers and the context of the application. In this paper, we propose a new method for schema matching in which wasteful computation is avoided by a prudent, and objective selection ...
Publication - cat - 07/28/2016 - 08:29 - 0 comments - 1 attachment
... 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
... over the target schema that satisfies the schema mapping. In general, a given source instance may have numerous different solutions. ...
Publication - hartung - 04/17/2013 - 12:16 - 0 comments - 1 attachment
... It is a key challenge to achieve semantic interoperability in building the Semantic Web. This paper proposes a new generic and adaptive ... both linguistic and structural similarity of ontologies in a vector space model, and then aggregates them using an adaptive method ...
Publication - cat - 04/17/2013 - 11:05 - 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
... 297.59 KB In this paper, we present YAM, a schema matcher factory. YAM (Yet Another ... apply these tools (similarity measures and classifiers) in concert to achieve the best matching quality. In our demonstration, we will let users apply YAM to build the best schema ...
Publication - cat - 04/17/2013 - 07:16 - 0 comments - 1 attachment
... are yet no mapping systems that support core computations. In this paper we introduce several new algorithms that contribute to bridge the ...
Publication - salva - 04/17/2013 - 06:05 - 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
... 10 - 49 In this article we present extensional mappings, that are based on second order tuple generating dependencies between models in our Generic Role-based Metamodel GeRoMe. Our mappings support data ...
Publication - dk - 04/16/2013 - 22:27 - 0 comments - 0 attachments
... 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
... 10 - 49 In this paper we survey the most interesting and novel approaches for the ... biological data represented through XML. (OA in the Life Sciences) ...
Publication - cat - 04/16/2013 - 10:16 - 0 comments - 0 attachments
... 10 - 49 In order to compute intelligent answers to complex questions, using the vast amounts of information existing in the Web, computers have (1) to translate such knowledge, typically from text ...
Publication - cat - 04/16/2013 - 09:49 - 0 comments - 0 attachments
... the alignment between heterogeneous ontologies. However, in many real-world applications, finding the alignment in a completely automatic way is highly infeasible. Ideally, an ontology ...
Publication - cat - 04/16/2013 - 07:27 - 0 comments - 0 attachments
... 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
... from the schema matching process, that is, the weights and in some cases the directions that are associated with the correspondences. In this paper, we propose a more automatic approach to schema integration that ...
Publication - cat - 04/16/2013 - 04:16 - 0 comments - 1 attachment
... 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
... between two database schemas. They are an important tool in several areas of database research, notably in data integration and data exchange. However, a concrete theory of schema ...
Publication - hartung - 04/16/2013 - 00:27 - 0 comments - 1 attachment
... the ability to search for and visualize schemas stored in a metadata repository. Users may search by keywords and by example -- using ... scoring metric. Schemr presents search results in a GUI that allows users to explore which elements match and how well they ...
Publication - cat - 04/16/2013 - 00:16 - 0 comments - 1 attachment
... between two ontologies, has played a key role in data exchange, data integration and metadata management. Among numerous ... the information over multiple domains, is not well studied in the community. In this paper, we propose a novel Gauss Function based ...
Publication - hartung - 04/15/2013 - 23:49 - 0 comments - 1 attachment
... of a general framework for metadata management. In fact, during the last years three alternative notions of inversion for ... practical applicability. First, these algorithms work in exponential time and produce inverse mappings of exponential size. Second, ...
Publication - hartung - 04/15/2013 - 23:38 - 0 comments - 1 attachment
... 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
