LDQL: A query language for the Web of Linked Data
نویسندگان
چکیده
منابع مشابه
LDQL: A Query Language for the Web of Linked Data
The Web of Linked Data is composed of tons of RDF documents interlinked to each other forming a huge repository of distributed semantic data. Effectively querying this distributed data source is an important open problem in the Semantic Web area. In this paper, we propose LDQL, a declarative language to query Linked Data on the Web. One of the novelties of LDQL is that it expresses separately (...
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In this paper, we propose LDQL, that is, a language to query Linked Data on the Web. The novelty of LDQL is that it enables a user to express separately (i) patterns that describe the expected query result, and (ii) Web navigation paths that select the data sources to be used for computing the result. We show that LDQL is strictly more expressive than other query formalisms and languages that h...
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In this paper, we propose LDQL, that is, a language to query Linked Data on the Web. The novelty of LDQL is that it enables a user to express separately (i) patterns that describe the expected query result, and (ii) Web navigation paths that select the data sources to be used for computing the result. As a downside of this expressiveness, we find that for some LDQL queries, a complete execution...
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The Data Web refers to the vast and rapidly increasing quantity of scientific, corporate, government and crowd-sourced data published in the form of Linked Open Data, which encourages the uniform representation of heterogeneous data items on the web and the creation of links between them. The growing availability of open linked datasets has brought forth significant new challenges regarding the...
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The Linked Data Web promises a disseminated, dynamic, ever expanding knowledge base where relationships between content and entities can be expressed and queried using formal logic rules. The data formats and exchange protocols that comprise the Linked Data Web have existed for over 15 years and grown to incorporate over 149 billion triples but there is no established ‘mainstream’ system that a...
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ژورنال
عنوان ژورنال: Journal of Web Semantics
سال: 2016
ISSN: 1570-8268
DOI: 10.1016/j.websem.2016.10.001