Engineering ontology-based access to real-world data sources
نویسندگان
چکیده
منابع مشابه
Engineering ontology-based access to real-world data sources
The preparation of existing real-world datasets for publication as high-quality semantic web data is a complex task that requires the concerted execution of a variety of processing steps using a range of different tools. Faced with both changing input data and evolving requirements on the produced output, we face a significant engineering task for schema and data transformation. We argue that t...
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The availability of streaming data sources is progressively increasing thanks to the development of ubiquitous data capturing technologies such as sensor networks. The heterogeneity of these sources introduces the requirement of providing data access in a unified and coherent manner, whilst allowing the user to express their needs at an ontological level. In this paper we describe an ontology-b...
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The availability of streaming data sources is progressively increasing thanks to the deployment of ubiquitous data capturing technologies such as sensor networks. We present an ontology-based streaming data access service, based on extensions to the R2O mapping language and its query processor ODEMapster, and to the C-SPARQL RDF stream query language. A preliminary implementation of the approac...
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Query answering in Ontology Based Data Access (OBDA) exploits the knowledge of an ontology’s TBox to deal with incompleteness of the ABox (or data source). Current query-answering techniques with DL-Lite require exponential size query reformulations, or expensive data pre-processing. Also, these techniques present severe redundancy issues when dealing with ABoxes that are already (partially) co...
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ژورنال
عنوان ژورنال: Journal of Web Semantics
سال: 2015
ISSN: 1570-8268
DOI: 10.1016/j.websem.2015.03.002