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Benchmarking Graph Database Backends—What Works Well with Wikidata?

Tibor Kovács, Gábor Simon, Gergely Mezei
2019 Acta Cybernetica  
In this paper, we benchmark different graph database implementations loaded with Wikidata, a real-life, large-scale knowledge base.  ...  RDF-based knowledge bases (KB) are prime examples, as RDF (Resource Description Framework) does use graph as logical model.  ...  In Section Related Work, we present other's work related to this paper: benchmarks using Wikidata in which graph databases are involved and possible modeling solutions to the problem of reification.  ... 
doi:10.14232/actacyb.24.1.2019.5 fatcat:yuzxs6iykbf2digepn2bse34lm

Wikidata

Denny Vrandečić
2012 Proceedings of the 21st international conference companion on World Wide Web - WWW '12 Companion  
Acknowledgments The protocol presented in this work would not be as powerful if it was not for the works of many, which ensure that the fruits of our work are immediately interoperable with lots of other  ...  We thank the work of the larger Wikidata:WikiProject COVID-19 community in which we operated, Wikidata volunteers in general, and in particular Ralf Stephan, Daniel Mietchen, and Finn  ...  This model of statements aligns well with the RDF triple model of the semantic web and the content of Wikidata is also serialized as Resource Description Framework (RDF) triples (14, 15) , acting as  ... 
doi:10.1145/2187980.2188242 dblp:conf/www/Vrandecic12 fatcat:rggc433zknee7neoqs3lr5ol6a

Using the W3C Generating RDF from Tabular Data on the Web recommendation to manage small Wikidata datasets

Steven J. Baskauf, Jessica K. Baskauf, Anisa Rula, Katherine Thornton, Anastasia Dimou, Jose Emilio Labra Gayo
2021 Semantic Web Journal  
Those snapshots can be used to document how subgraphs of Wikidata have changed over time and can be compared with the current state of Wikidata using its Query Service to detect vandalism and value added  ...  Since the Wikibase data model used by Wikidata can be expressed as RDF, this Recommendation can be used to document tabular snapshots of parts of the Wikidata knowledge graph in a simple form that is easy  ...  Thanks to Mark Denning for assistance with the web tool for constructing JSON metadata description files.  ... 
doi:10.3233/sw-210443 fatcat:ji7fazx6rnetnddnhpoqqzgpiq

Introducing Wikidata to the Linked Data Web [chapter]

Fredo Erxleben, Michael Günther, Markus Krötzsch, Julian Mendez, Denny Vrandečić
2014 Lecture Notes in Computer Science  
To address this issue, we introduce new RDF exports that connect Wikidata to the Linked Data Web. We explain the data model of Wikidata and discuss its encoding in RDF.  ...  Wikidata is the central data management platform of Wikipedia. By the efforts of thousands of volunteers, the project has produced a large, open knowledge base with many interesting applications.  ...  The crucial difference to our approach is that there is no "non-reified" RDF structure that we start from: we do not reify RDF triples but Wikidata objects.  ... 
doi:10.1007/978-3-319-11964-9_4 fatcat:5yauqaewezdpnfajwxxkmkmh24

Wikidata from a Research Perspective – A Systematic Mapping Study of Wikidata [article]

Mariam Farda-Sarbas, Claudia Müller-Birn
2019 arXiv   pre-print
Our study aims to provide a general overview of the research performed on Wikidata through a systematic mapping study in order to identify the current topical coverage of existing research as well as the  ...  This growth is reflected by an expanding number of research focusing on Wikidata.  ...  [30] compare various options for reifying RDF triples from Wikidata, and building on that study the efficiency of various database engines for querying Wikidata [31] .  ... 
arXiv:1908.11153v2 fatcat:qat4hakfgzgotl3hcdwgowyvvi

QAnswer KG: Designing a Portable Question Answering System over RDF Data [chapter]

Dennis Diefenbach, José Giménez-García, Andreas Both, Kamal Singh, Pierre Maret
2020 Lecture Notes in Computer Science  
., the possibility to apply a QA algorithm easily on new and previously untested RDF datasets.  ...  While RDF was designed to make data easily readable by machines, it does not make data easily usable by end-users.  ...  Many well-known and widely used datasets, such as DBpedia, Wikidata, DBLP, OpenStreetMap, MusicBrainz, and ORCID are provided.  ... 
doi:10.1007/978-3-030-49461-2_25 fatcat:gbuw5oqg5vesxprmfo4m3hatqq

Scholia And Scientometrics With Wikidata

Finn Årup Nielsen, Daniel Mietchen, Egon Willighagen
2017 Zenodo  
The Scholia Web service creates on-the-fly scholarly profiles for researchers, organizations, journals, publishers, individual scholarly works, and for research topics.  ...  To collect the data, it queries the SPARQL-based Wikidata Query Service.  ...  We would also like to thank Magnus Manske and James Hare for considerable work with Wikidata tools and data in the context of WikiCite.  ... 
doi:10.5281/zenodo.1036595 fatcat:druo37rerfembknfxzh4b7x6qy

A protocol for adding knowledge to Wikidata, a case report [article]

Andra Waagmeester, Egon L. Willighagen, Andrew I. Su, Martina Kutmon, Jose Emilio Labra Gayo, Daniel Fernández-Álvarez, Peter J. Schaap, Lisa M. Verhagen, Jasper J. Koehorst
2020 bioRxiv   pre-print
Wikidata, a public knowledge graph aligned with Wikipedia, is such a commons, but Wikidata may not always have the right schema for the urgent questions.  ...  As a telling example, we describe the process of aligning resources on the genomics of the SARS-CoV-2 virus and related viruses as well as how shape expressions can be defined for Wikidata helping others  ...  Acknowledgments The protocol presented in this work would not be as powerful if it was not for the works of many, which ensure that the fruits of our work are immediately interoperable with lots of other  ... 
doi:10.1101/2020.04.05.026336 fatcat:gcynqjdwofaivjk7cto35okfpq

Getting the Most Out of Wikidata: Semantic Technology Usage in Wikipedia's Knowledge Graph [chapter]

Stanislav Malyshev, Markus Krötzsch, Larry González, Julius Gonsior, Adrian Bielefeldt
2018 Lecture Notes in Computer Science  
A live SPARQL endpoint, regular RDF dumps, and linked data APIs are now forming the backbone of many uses of Wikidata.  ...  Wikidata is the collaboratively curated knowledge graph of the Wikimedia Foundation (WMF), and the core project of Wikimedia's data management strategy.  ...  What distinguishes Wikidata from RDF, however, is that many components of the knowledge graph carry more information than plain RDF would allow a single property or value to carry.  ... 
doi:10.1007/978-3-030-00668-6_23 fatcat:7w7wpb6ak5ai5mdnk4t25ps73a

A protocol for adding knowledge to Wikidata: aligning resources on human coronaviruses

Andra Waagmeester, Egon L. Willighagen, Andrew I. Su, Martina Kutmon, Jose Emilio Labra Gayo, Daniel Fernández-Álvarez, Quentin Groom, Peter J. Schaap, Lisa M. Verhagen, Jasper J. Koehorst
2021 BMC Biology  
Wikidata, a public knowledge graph aligned with Wikipedia, is such a commons and uses unique identifiers to link knowledge in other knowledge bases.  ...  However, Wikidata may not always have the right schema for the urgent questions.  ...  This model of statements aligns well with the RDF triple model of the semantic web and the content of Wikidata is also serialized as Resource Description Framework (RDF) triples [15, 16] , acting as a  ... 
doi:10.1186/s12915-020-00940-y pmid:33482803 fatcat:6ong7jpgpzbiplixejbe7yr54i

A Survey of RDF Stores SPARQL Engines for Querying Knowledge Graphs [article]

Waqas Ali, Muhammad Saleem, Bin Yao, Aidan Hogan, Axel-Cyrille Ngonga Ngomo
2021 arXiv   pre-print
This extended version also provides a survey of over one hundred SPARQL query engines and the techniques they use, along with twelve benchmarks and their features.  ...  RDF has seen increased adoption in recent years, prompting the standardization of the SPARQL query language for RDF, and the development of local and distributed engines for processing SPARQL queries.  ...  been shown to work particularly well on RDF graphs (e.g., given their fixed arity).  ... 
arXiv:2102.13027v4 fatcat:phontczhbfcvdjt5y75n3hfcge

A methodology and an implementation to perform live time traversal queries on RDF datasets

Arcangelo Massari, Silvio Peroni, Fabio Vitali
2021 Zenodo  
Moreover, the leading knowledge bases – DBpedia, Wikidata, Yago, and the Dynamic Linked Data Observatory – do not use RDF to track changes and enable time-agnostic queries.  ...  Purpose This dissertation introduces a methodology to perform live time-traversal queries on RDF datasets and software based on this procedure.  ...  Therefore, there is a clear similarity between n-ary relations and RDF Reification, with the difference that the latter reifies the statement, the first the predicate, with the advantage of not having  ... 
doi:10.5281/zenodo.5650879 fatcat:gwavxubhxndkvpmm4dhvarktwi

Interactive 3D Exploration of RDF Graphs through Semantic Planes

Fabio Viola, Luca Roffia, Francesco Antoniazzi, Alfredo D'Elia, Cristiano Aguzzi, Tullio Salmon Cinotti
2018 Future Internet  
A semantic plane contains all the RDF terms sharing a common concept; it can be created, and further split into several planes, through a set of UI controls or through SPARQL 1.1 queries, with the full  ...  support of OWL and RDFS.  ...  Acknowledgments: The work presented in this paper is being developed at the Advanced Research Center on Electronic Systems "Ercole De Castro" (ARCES), University of Bologna, 40125 Bologna, Italy.  ... 
doi:10.3390/fi10080081 fatcat:aiyzxa37mzdjba5feynfpd622i

Wikidata Support in the Creation of Rich Semantic Metadata for Historical Archives

Davide Colla, Annamaria Goy, Marco Leontino, Diego Magro
2021 Applied Sciences  
The research question this paper aims at answering is the following: In an ontology-driven annotation system, can the information extracted from external resources (namely, Wikidata) provide users with  ...  In the paper, we describe the automatic algorithm devised to support the definition of the mappings between the Wikidata semantic model and the PRiSMHA ontology, as well as the process used to extract  ...  Following a well-known approach [9] , we reify social roles by creating instances of the Role class (or of a subclass of it); then, instances representing roles can be "institutionalized" by an organization  ... 
doi:10.3390/app11104378 fatcat:sjxqdlxkqzggfkn3umihp7duxq

Benchmarking Database Systems for Graph Pattern Matching [chapter]

Nataliia Pobiedina, Stefan Rümmele, Sebastian Skritek, Hannes Werthner
2014 Lecture Notes in Computer Science  
In this paper, we benchmark different graph database implementations loaded with Wikidata, a real-life, large-scale knowledge base.  ...  RDF-based knowledge bases (KB) are prime examples, as RDF (Resource Description Framework) uses graph as logical model.  ...  In Section Related Work, we present other's work related to this paper: benchmarks using Wikidata in which graph databases are involved and possible modeling solutions to the problem of reification.  ... 
doi:10.1007/978-3-319-10073-9_18 fatcat:62x44uwqdrgore32lmlofqptmm
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