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RSP-QL⋆⋆: Enabling Statement-Level Annotations in RDF Streams
Linköping University, Sweden.
RISE - Research Institutes of Sweden (2017-2019), ICT. Linköping University, Sweden.ORCID iD: 0000-0003-0036-6662
RISE - Research Institutes of Sweden (2017-2019), ICT. Linköping University, Sweden.ORCID iD: 0000-0001-5702-7720
Linköping University, Sweden.
2019 (English)In: Part of the Lecture Notes in Computer Science book series (LNCS, volume 11702), 2019, p. 140-145Conference paper, Published paper (Refereed)
Abstract [en]

RSP-QL was developed by the W3C RDF Stream Processing (RSP) community group as a common way to express and query RDF streams. However, RSP-QL does not provide any way of annotating data on the statement level, for example, to express the uncertainty that is often associated with streaming information. Instead, the only way to provide such information has been to use RDF reification, which adds additional complexity to query processing, and is syntactically verbose. In this paper, we define an extension of RSP-QL, called RSP-QL⋆⋆, that provides an intuitive way for supporting statement-level annotations in RSP. The approach leverages the concepts previously described for RDF* and SPARQL*. We illustrate the proposed approach based on a scenario from a research project in e-health. An open-source implementation of the proposal is provided and compared to the baseline approach of using RDF reification. The results show that this way of dealing with statement-level annotations offers advantages with respect to both data transfer bandwidth and query execution performance.

Place, publisher, year, edition, pages
2019. p. 140-145
Keywords [en]
RSP-QL*; RDF*; RDF Stream Processing; e-health
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-52390DOI: 10.1007/978-3-030-33220-4_11OAI: oai:DiVA.org:ri-52390DiVA, id: diva2:1529146
Conference
International Conference on Semantic Systems SEMANTiCS 2019: Semantic Systems. The Power of AI and Knowledge Graphs
Note

Best Paper Award at the conference SEMANTICS2019

Available from: 2021-02-17 Created: 2021-02-17 Last updated: 2023-12-05Bibliographically approved

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Blomqvist, EvaLind, Leili

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