[PDF] Top 20 Peer based query rewriting in SPARQL for semantic integration of linked data

... a query rewriting algorithm that exploits the full semantics of our ...fect rewriting, another possible approach is to devise a rewriting algorithm that produces rewritten queries in a ... See full document

... answering SPARQL queries over disparate sources, proposing new SPARQL rewriting algo- rithms that entail semantic mappings between RDF databases [18, 10, 19, ...address query rewrit- ... See full document

... Abstract Data integration is concerned with unifying data that share some common semantics but originate from unrelated ...on data integration, we must take into account a more ... See full document

... Following Semantic Web and linked data principles, we have started to leverage BioKNO to integrate our bi- ological knowledge networks with existing relevant ...[73], Semantic Science ... See full document

... complex SPARQL queries over multiple Bio2RDF ...a SPARQL query that retrieves all the biochemical reactions in the Bio2RDF BioModels database [23] that are involved in the Gene Ontology (GO) term ... See full document

... RDF data through SPARQL ...of Linked Data (like “Cool URIs”) and well-planned predicates is not triv- ...the data warehouse systems BioMart and InterMine, and the workflow design tool ... See full document

... As shown in Figure – 3, the Web Application is hosted on Virtual Private Server and configures two servers on VPS (Humfrey, 2018). One is LAMP (Linux Apache MySql PHP) server and second is Apache Jena Fuseki Server. The ... See full document

... of SPARQL, hence, by definition, it is not supported by engines strictly complying with the SPARQL Query ...independent SPARQL micro-services, thereby building up an ecosystem of services all ... See full document

... Linked Data promises a new and more efficient para- digm for sharing and connecting distributed data, per- mitting decentralization and ...Since Linked Data is built upon the Web ... See full document

... as Linked Data, where the user may not always know how a query should be formulated in order to retrieve the desired ...presents query processing algorithms for a fragment of SPARQL ... See full document

... a query engine for SPARQL or a similar language that can answer queries by automatically discovering nec- essary SADI services and calling ...a SPARQL engine that com- putes queries by picking and ... See full document

... functions. Semantic technologies can help in this ...for semantic annotation, data integration, and semantic search in the miRNA ...a semantic search system, OmniSearch, designed ... See full document

... of Semantic Web technologies if one thinks to an organization that is producing goods or is offering ...cases Semantic Web technologies are useful only to describe information that is needed in the ... See full document

... We conduct experiments on the benchmark WEBQUESTIONS dataset (Berant et al., 2013). Experimental results show that our method can ef- fectively resolve the vocabulary mismatch prob- lem and achieve accurate and robust ... See full document

... The system still lacks the precision and performance that can be achieved by implementing indexes. We witnessed this with the results of the different queries. Our system performed well with the query Specific as ... See full document

... the Semantic Web environment, description languages for Web ontology ...and query languages for Web ontology (e.g., RQL 6 , RDQL 7 , and SPARQL 8 ) have been ...proposed. SPARQL recommended by ... See full document

... the query decomposition problem in the context of data integration on the Web of Data, where local data sources are RDF datasets described by an ontology and accessed through ... See full document

... to query for triples from an RDF database (or triple ...Structured Query Language (SQL) used to get data from a relational ...table based, meaning that data is stored in fixed tables ... See full document

... must also occur in the body. A predicate P depends on a predicate Q in Π if Π contains a clause whose head is P and whose body contains Q. Π is called nonrecursive if this dependence relation for Π is acyclic. For a ... See full document

... a rewriting as a non- recursive datalog program). The rewriting q 0 (x) could then be unfolded into an SQL query using the so-called partial evaluation (Lloyd and Shepherdson, 1991), which ... See full document