Query Translation for Mediators over Ontology-Based Information Sources
We propose a model for providing integrated and unified access to multiple information sources. Each source comprises: (a) an ontology i.e. a set of terms structured by a subsumption relation, and (b) a database that stores descriptions of objects using terms of the ontology. We assume that differen...
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| creator | Tzitzikas, Yannis Spyratos, Nicolas Constantopoulos, Panos |
| description | We propose a model for providing integrated and unified access to multiple information sources. Each source comprises: (a) an ontology i.e. a set of terms structured by a subsumption relation, and (b) a database that stores descriptions of objects using terms of the ontology. We assume that different sources may use different ontologies, i.e., different terminologies withterms that correspond to different natural languages or to different levels of granularity. Information integration is obtained through a mediator comprising two parts: (a) an ontology, and (b) a set of articulations to the sources, where an articulation to a source is a set of relationships between terms of the mediator and terms of that source. Information requests (queries) are addressed to the mediator whose task is to analyze each query into sub-queries, send them to the appropriate sources, then combine the results to answer the original query. We study the querying and answering process in this model and we focus on query translation between the mediator and the sources. |
| doi_str_mv | 10.1007/3-540-46014-4_38 |
| format | Book Chapter |
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Data processing</topic><topic>Multiple Information Source</topic><topic>Original Query</topic><topic>Query Translation</topic><topic>Software</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tzitzikas, Yannis</creatorcontrib><creatorcontrib>Spyratos, Nicolas</creatorcontrib><creatorcontrib>Constantopoulos, Panos</creatorcontrib><collection>ProQuest Ebook Central - Book Chapters - Demo use only</collection><collection>Pascal-Francis</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tzitzikas, Yannis</au><au>Spyratos, Nicolas</au><au>Constantopoulos, Panos</au><au>Vlahavas, Ioannis P</au><au>Spyropoulos, Constantine D</au><au>Vlahavas, Ioannis P.</au><au>Spyropoulos, Constantine D.</au><format>book</format><genre>bookitem</genre><ristype>CHAP</ristype><atitle>Query Translation for Mediators over Ontology-Based Information Sources</atitle><btitle>Lecture notes in computer science</btitle><seriestitle>Lecture Notes in Computer Science</seriestitle><date>2002</date><risdate>2002</risdate><volume>2308</volume><spage>423</spage><epage>436</epage><pages>423-436</pages><issn>0302-9743</issn><eissn>1611-3349</eissn><isbn>3540434720</isbn><isbn>9783540434726</isbn><eisbn>3540460144</eisbn><eisbn>9783540460145</eisbn><abstract>We propose a model for providing integrated and unified access to multiple information sources. 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| fulltext | fulltext |
| identifier | ISSN: 0302-9743 |
| ispartof | Lecture notes in computer science, 2002, Vol.2308, p.423-436 |
| issn | 0302-9743 1611-3349 |
| language | eng |
| recordid | cdi_pascalfrancis_primary_14056230 |
| source | Springer Books |
| subjects | Answer Model Answering Query Applied sciences Computer science control theory systems Exact sciences and technology Information systems. Data bases Memory organisation. Data processing Multiple Information Source Original Query Query Translation Software |
| title | Query Translation for Mediators over Ontology-Based Information Sources |
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