[PDF] Top 20 Ontology based data access with databases: a short course

... relational databases, assuming that the reader has some basic knowledge of description ...4 ontology editor as well as OWLAPI and Sesame libraries and a SPARQL ... See full document

... To conclude, we believe this paper shows that—despite the negative theoretical results on the worst-case OWL 2 QL query rewriting and sometimes disappoint- ing experiences of the first OBDA systems—high-performance OBDA ... See full document

... for data complexity and PS PACE -complete for combined complexity (even NP-complete if the arity of predicates is ...log data stored in databases as ...datalogMTL ontology for temporal con- ... See full document

... Abstract:Ontology Based Data Access (OBDA) is an emerging research area to query relational databases via ontology, to which these databases are ...The ontology depicts ... See full document

... accessing data is one of the most exciting new applications of description logics in databases and other information ...tology-based data access in practice is by reduc- tion to ... See full document

... Statoil databases via map- pings (thus addressing Req. 1); and the ontology underly- ing the deployment has a wide range of terms coming from several respected sources (thus addressing ...ated ... See full document

... for databases with real data include FishMark [2] 3 , IMDb OBDA [14] 4 and the NPD FactPages [18] 5 ...those based on existing SQL queries and queries invented by the authors are ...the ... See full document

... distributed data environments, ontologies have been used as a support for data ...of data at different sources, helping to overcome problems of data heterogeneity and semantic ...accessing ... See full document

... tested access- ing the dataset using ontological-based approach ...ontological-based access in LEMO dataset and the overlapping coefficient between the search results of the two approaches ... See full document

... (µK) ontology (Mahesh, 1996; Viegas et al 1999) has been used as a language independent conceptual structure to achieve a truly concept-based terminology database (termbase, for ...original ontology, ... See full document

... Ontology-based data access (OBDA, for short) is a seman- tic technology that has been developed since the mid 2000s [Poggi et ...facilitating access to vari- ous types of ... See full document

... QL ontology, S a database schema, and M a set of R2RML mapping assertions, each associating to a class or property in O an SQL query over ...the data instance D, which consists in executing the SQL queries ... See full document

... of databases have become web ...the data units from the underlying database are decoded into the result pages very ...encoded data units need to be machine ...web data collection and Internet ... See full document

... Therefore, in this chapter, a new way of applying the GO terms to annotate anonymous protein sequences is introduced. The GO-based method consists of three main components. In the first component, the single ... See full document

... rithm based on probabilistic retrieval ...are based on a 2D Poisson model while the global weights are based on the Robertson-Spärck-Jones Probabilistic ...approximated, based on these ... See full document

... our data-privacy definition with respect to a privacy constraint to prevent consequence attacks by data-adversary, followed by properties of this new privacy ...n data providers P =P1, P2, ...any ... See full document

... When designing a database it is common practice for a database designer to develop an Entity Relationship model and to represent that model in a drawing, the entity relationship diagram (ERD). In this chapter we discuss ... See full document

... paper, ontology will apply at E numbers in which E numbers are codes for chemicals that can be used as food ...used, ontology mapping technique was used to combine all types of ...the data collection ... See full document

... an ontology proposed for intelligence and based on proposed ontology, components of intelligence, the functionality of each one and relation among them will be ...proposed ontology, a model ... See full document

... One way to do this is to target customers with the particular offers most likely to attract them back to the store and to spend more time and money on their next visit. Demographic market segmentation is an approach to ... See full document