SPARQL web-querying infrastructure: Ready for action?

Carlos Buil-Aranda, Aidan Hogan, Jürgen Umbrich, Pierre Yves Vandenbussche

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

176 Scopus citations

Abstract

Hundreds of public SPARQL endpoints have been deployed on the Web, forming a novel decentralised infrastructure for querying billions of structured facts from a variety of sources on a plethora of topics. But is this infrastructure mature enough to support applications? For 427 public SPARQL endpoints registered on the DataHub, we conduct various experiments to test their maturity. Regarding discoverability, we find that only one-third of endpoints make descriptive meta-data available, making it difficult to locate or learn about their content and capabilities. Regarding interoperability, we find patchy support for established SPARQL features like ORDER BY as well as (understandably) for new SPARQL 1.1 features. Regarding efficiency, we show that the performance of endpoints for generic queries can vary by up to 3-4 orders of magnitude. Regarding availability, based on a 27-month long monitoring experiment, we show that only 32.2% of public endpoints can be expected to have (monthly) "two-nines" uptimes of 99-100%.

Original languageEnglish
Title of host publicationThe Semantic Web, ISWC 2013 - 12th International Semantic Web Conference, Proceedings
Pages277-293
Number of pages17
EditionPART 2
DOIs
StatePublished - 2013
Externally publishedYes
Event12th International Semantic Web Conference, ISWC 2013 - Sydney, NSW, Australia
Duration: Oct 21 2013Oct 25 2013

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
NumberPART 2
Volume8219 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference12th International Semantic Web Conference, ISWC 2013
Country/TerritoryAustralia
CitySydney, NSW
Period10/21/1310/25/13

Fingerprint

Dive into the research topics of 'SPARQL web-querying infrastructure: Ready for action?'. Together they form a unique fingerprint.

Cite this