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View all- Kyu KOo A(2020)Enhancement of Query Execution Time in SPARQL Query Processing2020 International Conference on Advanced Information Technologies (ICAIT)10.1109/ICAIT51105.2020.9261805(153-158)Online publication date: 4-Nov-2020
The problem of answering SPARQL queries over virtual SPARQL views is commonly encountered in a number of settings, including while enforcing security policies to access RDF data, or when integrating RDF data from disparate sources. We approach this ...
Caching in the context of expressive query languages such as SPARQL is complicated by the difficulty of detecting equivalent queries: deciding if two conjunctive queries are equivalent is NP-complete, where adding further query features makes the ...
Query containment is a fundamental problem in database research, which is relevant for many tasks such as query optimisation, view maintenance and query rewriting. For example, recent SPARQL engines built on Big Data frameworks that precompute ...
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