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Ruben Verborgh

Demonstration of Link Traversal SPARQL Query Processing over the Decentralized Solid Environment

Ruben Taelman and Ruben Verborgh

To tackle economic and societal problems originating from the centralization of Knowledge Graphs on the Web, there has been an increasing interest towards decentralizing Knowledge Graphs across a large number of small authoritative sources. In order to effectively build user-facing applications, there is a need for efficient query engines that abstract the complexities around accessing such massively Decentralized Knowledge Graphs (DKGs). As such, we have designed and implemented novel Link Traversal Query Processing algorithms into the Comunica query engine framework that are capable of efficiently evaluating SPARQL queries across DKGs provided by the Solid decentralization initiative. In this article, we demonstrate this query engine through a Web-based interface over which SPARQL queries can be executed over simulated and real-world Solid environments. Our demonstration shows the benefits of a traversal-based approach towards querying DKGs, and uncovers opportunities for further optimizations in future work in terms of both query execution and discovery algorithms.

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Published in 2024 in Proceedings of the 27th International Conference on Extending Database Technology (EDBT).

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Cite this article easily using its BibTeX entry: 

@inproceedings{taelman_edbt_2024,
  author = {Taelman, Ruben and Verborgh, Ruben},
  title = {Demonstration of Link Traversal {SPARQL} Query Processing over the Decentralized {Solid} Environment},
  booktitle = {Proceedings of the 27th International Conference on Extending Database Technology (EDBT)},
  year = 2024,
  month = mar,
  url = {https://comunica.github.io/Article-EDBT2024-SolidQueryDemo/},
}

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ACM
Ruben Taelman and Ruben Verborgh. 2024. Demonstration of Link Traversal SPARQL Query Processing over the Decentralized Solid Environment. In Proceedings of the 27th International Conference on Extending Database Technology (EDBT).
APA
Taelman, R., & Verborgh, R. (2024, March). Demonstration of Link Traversal SPARQL Query Processing over the Decentralized Solid Environment. Proceedings of the 27th International Conference on Extending Database Technology (EDBT).
IEEE
R. Taelman and R. Verborgh, “Demonstration of Link Traversal SPARQL Query Processing over the Decentralized Solid Environment,” in Proceedings of the 27th International Conference on Extending Database Technology (EDBT), 2024.
LNCS
Taelman, R., Verborgh, R.: Demonstration of Link Traversal SPARQL Query Processing over the Decentralized Solid Environment. In: Proceedings of the 27th International Conference on Extending Database Technology (EDBT) (2024).
MLA
Taelman, Ruben, and Ruben Verborgh. “Demonstration of Link Traversal SPARQL Query Processing over the Decentralized Solid Environment.” Proceedings of the 27th International Conference on Extending Database Technology (EDBT), 2024.

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