[PDF] Top 20 Rewriting-Based Query Answering for Semantic Data Integration Systems
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Rewriting-Based Query Answering for Semantic Data Integration Systems
... on query answering in the presence of an ontology make the assumption that data is described over the same vocabulary as the ontology, hence they do not study the interaction between the ontology and ... Voir le document complet
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Ontological view based semantic transformation for distributed systems
... Keywords—ontology, semantic integration, distributed systems, open environment ...knowledge for efficiently and effectively accomplishing its business ...demand for complete access to ... Voir le document complet
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Semantic models in Web based Educational System integration
... Ontology, Semantic Web, Benchmarking Abstract: Web based e-Education systems are an important kind of information systems that benefited from Web stan- dards for implementation, ... Voir le document complet
13
Semantic Data Integration for Public Health in Brazil
... Keywords: Semantic Data Integration, Ontology Based Data Integration, Ontologies, Healthcare, Public ...45 systems for reporting the national health situation 1 ... Voir le document complet
4
Ontology-Mediated Query Answering for Key-Value Stores
... the data integration-oriented approach known as Ontology-Based Data Access to KV-stores (and specially ...JSON data. Query reformulation is performed at the concep- tual level, ... Voir le document complet
9
Complex correspondences for query patterns rewriting
... matchers for generating complex correspondences are available or use EDOAL, an expressive alignment language [3], for representing ...to query patterns rewriting, the problem can be seen, at a ... Voir le document complet
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Reformulation-based query answering in RDF: alternatives and performance
... the data management ...These systems and reformulation strategies are representative of the state of the art for ...RDF data, constraints and queries into Datalog programs to be evaluated by ... Voir le document complet
5
Complex correspondences for query patterns rewriting
... matchers for generating complex correspondences are available or use EDOAL, an expressive alignment language [3], for representing ...to query patterns rewriting, the problem can be seen, at a ... Voir le document complet
14
Optimizing FOL reducible query answering
... EUDG data generator [19]: LUBM ∃ 20 consists of 34 roles, 128 concepts and 212 constraints; the generated ABox comprises 15 million ...table for each role and a unary one for each concept; as ... Voir le document complet
12
Understanding and Improving Reformulation-Based Query Answering Performance in RDF
... reformulation-based query answering. We will prepare a set of scenarios (data, constraints, and queries) and allow the audience to experi- ment with a variety of Ref strategies, and evaluating ... Voir le document complet
6
Frame-based ontological view for semantic integration
... the data structure that represents stereotypical situations (Brachman and Levesque, ...and, for domain experts, it is cognitively simple, intuitive, and ...expert systems (Aikins, ... Voir le document complet
39
Query Rewriting for Existential Rules with Compiled Preorder
... Ontology-Based Query An- swering (OBQA), which seeks to exploit knowl- edge expressed in ontologies when querying ...in rewriting queries into unions of conjunctive queries ...a rewriting ... Voir le document complet
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Optimizing Reformulation-based Query Answering in RDF
... guage. For instance, Presto [12, 38] reformulates queries in a DL-Lite setting into non-recursive Datalog ...a semantic constraint viewpoint than the RDFS constraints we ...optimization based on ... Voir le document complet
13
Ontology-Mediated Query Answering: Harnessing Knowledge to Get More From Data
... plications. For example, in the EU-funded Optique project, industrial partners Statoil and Siemens are adopting OMQA to make it possible for end users to formulate their queries over multiple complex ... Voir le document complet
5
Challenges for View-Based Query Answering over Probabilistic XML
... in data and many applications must cope with this [1]: infor- mation extraction from the World Wide Web [2], automatic schema matching in data integration [3] are inherently ...the data is ... Voir le document complet
14
Answering PICO Clinical Questions: a Semantic Graph-Based Approach
... achieve this goal, Boudin et al. [3, 2] automatically detected PICO elements in the documents and then revised the basic version of the IR language model [9]. More precisely, the authors revised the word-document ... Voir le document complet
7
Semantic Integration of Geospatial Data from Earth Observations
... methods for annotating data sets are usually based on metadata records (with attributes such as title, provider, access mode, and spatio- temporal characteristics), which offer a narrow view of the ... Voir le document complet
6
Biological data integration using Semantic Web technologies
... of Semantic Web technologies applied to life ...available Semantic Web standards (URIs, RDF, OWL, SPARQL) to integrate, query and display information originating from several different ...of ... Voir le document complet
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Semantic Integration of Geospatial Data from Earth Observations
... 3 A data model for enriched geospatial metadata records Figure 1 depicts the proposed data model. The class SatelliteImgMetadataRecord is a subclass of dcat:Dataset. This specialization is required ... Voir le document complet
5
Searching the Semantic Web: Approximate Query Processing based on Ontologies
... The semantic web relies on ontologies representing domains through their main concepts and the relations between ...search for information based on the semantics of web resources rather than their ... Voir le document complet
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