Towards an update-enabled Mediator System using Semantic Web technology

Grundlagen von Datenbanken 2010.

计算机科学;

Stefan Haun ; Sandro Schulze ; Andreas Nürnberger

Others  :  http://ceur-ws.org/Vol-581/gvd2010_3_2.pdf
PID  :  42757

学科分类：计算机科学（综合）

来源: CEUR

【 摘 要 】

A large part of implementing information retrieval or data mining systems consists of joining data from dierent sources to connect related items, enrich data sets and nd similari- ties or contradictions. Mediators take care of the conversion between dierent formats and access to the data sources to provide a unied view, however these systems either only support read operations or are limited to a schema derived from a xed set of data sources. We sketch a concept for a mediator based on Semantic Web technology { especially RDF/OWL and SPARQL { enriched with semantics from the wrappers and an ontology describ- ing the schema integration. Our system is able to handle updates on the unied view, feeding them back to the re- spective data sources and therefore extends the capabilities of classic data warehouses of federated databases. Furthermore we analyze how CARSA, a meta-search engine framework, can be extended to implement the concept and