منابع مشابه
Querying the semantic web
We know how to express information on the web. It is now necessary to take advantage of it. Nowadays, more resources are annotated via RDF due to its simple data model, formal semantics, and a sound and complete inference mechanism. RDF itself can be used as a query language for an RDF knowledge base using RDF consequence. Nonetheless, the use of consequence is still limited for answering queri...
متن کاملQuerying Semantic Web Data Cubes
We address the problem of querying data cubes for Online Analytical Processing (OLAP) analysis, directly on the Semantic Web (SW). We rst introduce CQL, a simple algebra for querying data cubes at a conceptual level. Taking advantage of QB4OLAP metadata, we automatically translate CQL queries into SPARQL ones, and propose query optimization strategies that adapt, to the particular OLAP setting,...
متن کاملQuerying and Visualizing the Semantic Web
The amount of unstructured information on the Web has reached a critical level, suggesting the need for the Semantic Web (SW). The SW expresses an initiative to improve the World Wide Web, by adding semantic content to the provided information, thus making the data accessible not only to humans but to machines as well. The fulfilment of this goal requires the contribution of a variety of resear...
متن کاملTowards Populating and Querying the Semantic Web
There are two main issues on querying the Semantic Web: what data can be queried and how to query them. This paper tackles how to query existing data in relational databases over popular ontologies in the Semantic Web. It shows (i) how the mappings between Description Logic-based ontologies and relational schemas can be specified, and (ii) how queries against ontologies can be translated to SQL...
متن کاملSemantic Querying of Mathematical Web Service Descriptions
This paper describes a semantic extension to the Mathematical Services Query Language (MSQL). MSQL is a language for querying registry-published mathematical Web service descriptions expressed in the Mathematical Services Description Language (MSDL). The semantic extension allows queries in MSQL to be based on the underlying semantics of service descriptions; the MSQL engine processes these que...
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ژورنال
عنوان ژورنال: International journal of Web & Semantic Technology
سال: 2016
ISSN: 0976-2280,0975-9026
DOI: 10.5121/ijwest.2016.7102