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Trav-SHACL: Efficiently Validating Networks of SHACL Constraints [article]

Mónica Figuera and Philipp D. Rohde and Maria-Esther Vidal
<span title="2021-01-18">2021</span> <i > arXiv </i> &nbsp; <span class="release-stage" >pre-print</span>
The Shapes Constraint Language (SHACL) is the W3C recommendation language for integrity constraints over RDF knowledge graphs.  ...  SHACL models integrity constraints as a network of shapes, where a shape contains the constraints to be fullfiled by the same entities.  ...  We run 11 various SHACL engines over 164 constraints validated over nine knowledge graphs whose sizes range from 1M to 34M.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener" href="https://arxiv.org/abs/2101.07136v1">arXiv:2101.07136v1</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/4ehu723265e6heupdy7q2hu6uy">fatcat:4ehu723265e6heupdy7q2hu6uy</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20210120081016/https://arxiv.org/pdf/2101.07136v1.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/3c/4d/3c4d35d597cbe3c989b8ad816d108cb4a71bcf74.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener" href="https://arxiv.org/abs/2101.07136v1" title="arxiv.org access"> <button class="ui compact blue labeled icon button serp-button"> <i class="file alternate outline icon"></i> arxiv.org </button> </a>

Enabling Automatic Discovery and Querying of Web APIs at Web Scale using Linked Data Standards

Franck Michel, Catherine Faron-Zucker, Olivier Corby, Fabien Gandon
<span title="">2019</span> <i title="ACM Press"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/s4hirppq3jalbopssw22crbwwa" style="color: black;">Companion Proceedings of The 2019 World Wide Web Conference on - WWW &#39;19</a> </i> &nbsp;
The proposed solution leverages SPARQL Service Description, SHACL, DCAT, VoID, Schema.org and Hydra to express a rich functional description that allows a software agent to decide whether a microservice  ...  This Web page is both a human-friendly documentation and a machine-readable description that makes it possible for humans and machines alike to discover and invoke SPARQL microservices at Web scale, as  ...  SHACL, the Shapes Constraint Language, is designed for the validation of RDF graphs (called data graphs) against a set of conditions expressed in the form of shapes graphs.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1145/3308560.3317073">doi:10.1145/3308560.3317073</a> <a target="_blank" rel="external noopener" href="https://dblp.org/rec/conf/www/MichelFCG19.html">dblp:conf/www/MichelFCG19</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/efmlsfnh5jcjncsdg3mx4p2zx4">fatcat:efmlsfnh5jcjncsdg3mx4p2zx4</a> </span>
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A Review of SHACL: From Data Validation to Schema Reasoning for RDF Graphs [article]

Paolo Pareti, George Konstantinidis
<span title="2021-12-02">2021</span> <i > arXiv </i> &nbsp; <span class="release-stage" >pre-print</span>
A SHACL document describes a set of constraints on RDF nodes, and a graph is valid with respect to the document if its nodes satisfy these constraints.  ...  We present an introduction and a review of the Shapes Constraint Language (SHACL), the W3C recommendation language for validating RDF data.  ...  Another similar approach, presented in [8] , allows the automatic extraction of shacl constraints from a sparql endpoint, and was tested on the dataset of Europeana 11 .  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener" href="https://arxiv.org/abs/2112.01441v1">arXiv:2112.01441v1</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/sug2scbtd5hetg22qz2bakzmmy">fatcat:sug2scbtd5hetg22qz2bakzmmy</a> </span>
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A Shape Expression approach for assessing the quality of Linked Open Data in libraries

Gustavo Candela, Pilar Escobar, María Dolores Sáez, Manuel Marco-Such, Mehwish Alam, Victor de Boer, Eero Hyvönen, Albert Meroño Peñuela, Harald Sack
<span title="2021-09-08">2021</span> <i title="IOS Press"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/pcapks3huberdozbvfqowysuly" style="color: black;">Semantic Web Journal</a> </i> &nbsp;
In this article, we propose a methodology to create Shape Expressions definitions in order to validate LOD datasets published by libraries.  ...  In this way, quality has become a crucial aspect to identify and reuse a dataset for research.  ...  Shapes Constraint Language (SHACL) is a World Wide Web Consortium (W3C) specification for validating graph-based data against a set of conditions [55] .  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.3233/sw-210441">doi:10.3233/sw-210441</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/tiy3i7chz5g3tmcdirnvukpz5e">fatcat:tiy3i7chz5g3tmcdirnvukpz5e</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20210924095915/https://content.iospress.com/download/semantic-web/sw210441?id=semantic-web%2Fsw210441" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/6d/c3/6dc32f3c129326e5d69dbb1b140d1d5ccff869f2.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.3233/sw-210441"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="unlock alternate icon" style="background-color: #fb971f;"></i> Publisher / doi.org </button> </a>

A Linked Data Profiling Service for Quality Assessment [chapter]

Nandana Mihindukulasooriya, Raúl García-Castro, Freddy Priyatna, Edna Ruckhaus, Nelson Saturno
<span title="">2017</span> <i title="Springer International Publishing"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/2w3awgokqne6te4nvlofavy5a4" style="color: black;">Lecture Notes in Computer Science</a> </i> &nbsp;
Profiling results can be used to assess quality either by manual inspection, or automatically using data validation languages such as SHACL, ShEX, or SPIN.  ...  The Linked (Open) Data cloud has been growing at a rapid rate in recent years.  ...  Loupe API uses SPARQL 1.1 features and some metrics are omitted if an endpoint only supports SPARQL 1.0.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-319-70407-4_42">doi:10.1007/978-3-319-70407-4_42</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/rqvgyco2q5hg3kc4cytksdtpki">fatcat:rqvgyco2q5hg3kc4cytksdtpki</a> </span>
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D2.2. – Data Services

Svetla Boytcheva, Plamen Tarkalanov, Nikola Tulechki, Pavlin Gyurov, Nikola Rusinov
<span title="2021-01-31">2021</span> <i title="Zenodo"> Zenodo </i> &nbsp;
Google sheet data is consumed over HTTP in a simple CSV tabular format and is converted to RDF using a custom SPARQL query and the TARQL 13 tool.  ...  TARQL (or tabular sparql) allows us to define a tabular to RDF mapping in a SPAQRL query.  ...  It created Shapes Constraint Language 15 (SHACL) as a recommendation for description of data integration and validity rules (called also shapes).  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5281/zenodo.4593574">doi:10.5281/zenodo.4593574</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/msvdfr4wljerfnygdzflnfpahe">fatcat:msvdfr4wljerfnygdzflnfpahe</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20210311040017/https://zenodo.org/record/4593574/files/D2.2%20-%20Data%20Services_V.1.0.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/31/4c/314cab292be34e51b30d0ae66689a2f602830d56.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5281/zenodo.4593574"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="unlock alternate icon" style="background-color: #fb971f;"></i> zenodo.org </button> </a>

Evaluating the Quality of RDF Data Sets on Common Vocabularies in the Social, Behavioral, and Economic Sciences [article]

Thomas Hartmann, Benjamin Zapilko, Joachim Wackerow, Kai Eckert
<span title="2015-09-15">2015</span> <i > arXiv </i> &nbsp; <span class="release-stage" >pre-print</span>
We checked 115 constraints on three different and representative SBE vocabularies (DDI-RDF, QB, and SKOS) by means of the RDF Validator, a validation environment which is available at http://purl.org/net  ...  In this paper, we evaluate the data quality of 15,694 data sets (4.26 billion triples) of research data for the social, behavioral, and economic sciences obtained from 33 SPARQL endpoints.  ...  using SPARQL, we use SPIN, a SPARQL-based way to formulate and check constraints, as basis to develop a validation environment to validate RDF data according to constraints expressed by arbitrary constraint  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener" href="https://arxiv.org/abs/1504.04478v2">arXiv:1504.04478v2</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/hodwhv7i4zcvlou7xski44fily">fatcat:hodwhv7i4zcvlou7xski44fily</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20191026091017/https://arxiv.org/pdf/1504.04478v2.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/aa/f3/aaf3a92e87fa6f6ed740a2f3c8df374616460d31.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener" href="https://arxiv.org/abs/1504.04478v2" title="arxiv.org access"> <button class="ui compact blue labeled icon button serp-button"> <i class="file alternate outline icon"></i> arxiv.org </button> </a>

Linked Open Data Validity -- A Technical Report from ISWS 2018 [article]

Tayeb Abderrahmani Ghor, Esha Agrawal, Mehwish Alam, Omar Alqawasmeh, Claudia D'amato, Amina Annane, Amr Azzam, Andrew Berezovskyi, Russa Biswas, Mathias Bonduel, Quentin Brabant, Cristina-iulia Bucur, Elena Camossi, Valentina Anita Carriero, Shruthi Chari (+48 others)
<span title="2019-03-26">2019</span> <i > arXiv </i> &nbsp; <span class="release-stage" >pre-print</span>
Linked Data might be outdated, imprecise, or simply wrong": there arouses a necessity to investigate the problem of linked data validity.  ...  Each LOD entity is identfied by a URI and accessible via HTTP.  ...  set of SHACL constraints.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener" href="https://arxiv.org/abs/1903.12554v1">arXiv:1903.12554v1</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/e25yvjsucvghzol4uo3omflh7i">fatcat:e25yvjsucvghzol4uo3omflh7i</a> </span>
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Completeness and consistency analysis for evolving knowledge bases

Mohammad Rifat Ahmmad Rashid, Giuseppe Rizzo, Marco Torchiano, Nandana Mihindukulasooriya, Oscar Corcho, Raúl García-Castro
<span title="">2019</span> <i title="Elsevier BV"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/etvhqodrjrc3tpf4c7eo6waru4" style="color: black;">Journal of Web Semantics</a> </i> &nbsp;
Then, we perform consistency checks to validate the results of the completeness analysis using integrity constraints and learning models.  ...  We also assessed the performance of our consistency analysis by using five learning models over three sub-tasks, namely minimum cardinality, maximum cardinality, and range constraint.  ...  SHACL is divided into two parts: (i) SHACL Core, describes a core RDF vocabulary to define common shapes and constraints; and (ii) extension mechanism named SHACL-SPARQL.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.websem.2018.11.004">doi:10.1016/j.websem.2018.11.004</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/vazunrgh5rav5dbxleplvbhx3e">fatcat:vazunrgh5rav5dbxleplvbhx3e</a> </span>
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Mining Cardinalities from Knowledge Bases [chapter]

Emir Muñoz, Matthias Nickles
<span title="">2017</span> <i title="Springer International Publishing"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/2w3awgokqne6te4nvlofavy5a4" style="color: black;">Lecture Notes in Computer Science</a> </i> &nbsp;
Such cardinalities can be declared using OWL and RDF constraint languages as constraints on the usage of properties over instance data.  ...  We report an implementation of our algorithm with two variants using SPARQL 1.1 and Apache Spark, and their evaluation on real-world and synthetic data.  ...  Fig. 1 : 1 Example of UNA 2.0 as defined in SHACL. Fig. 2 : 2 SPARQL 1.1 definition of a minimum cardinality constraint.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-319-64468-4_34">doi:10.1007/978-3-319-64468-4_34</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/goniv5utazgzzotfo6u4x3q4ae">fatcat:goniv5utazgzzotfo6u4x3q4ae</a> </span>
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YAGO 4: A Reason-able Knowledge Base [chapter]

Thomas Pellissier Tanon, Gerhard Weikum, Fabian Suchanek
<span title="">2020</span> <i title="Springer International Publishing"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/2w3awgokqne6te4nvlofavy5a4" style="color: black;">Lecture Notes in Computer Science</a> </i> &nbsp;
In this resource paper, we present its latest version, YAGO 4, which reconciles the rigorous typing and constraints of schema.org with the rich instance data of Wikidata.  ...  The resulting resource contains 2 billion type-consistent triples for 64 Million entities, and has a consistent ontology that allows semantic reasoning with OWL 2 description logics.  ...  YAGO 4 comes with a responsive SPARQL endpoint, which can be used as an API or interactively. The URL is http://yago-knowledge.org/ sparql/query.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-030-49461-2_34">doi:10.1007/978-3-030-49461-2_34</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/tawaoe3onbfljerzc6jq2iimfi">fatcat:tawaoe3onbfljerzc6jq2iimfi</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20200604004316/https://link.springer.com/content/pdf/10.1007%2F978-3-030-49461-2_34.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/7c/c3/7cc33bff1b0546ffa69512e9d42e18036b84ce32.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-030-49461-2_34"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> springer.com </button> </a>

Representing Activities associated with Processing of Personal Data and Consent using Semantic Web for GDPR Compliance

Harshvardhan J. Pandit, Dave Lewis, Declan O'Sullivan
<span title="2020-05-06">2020</span> <i title="Zenodo"> Zenodo </i> &nbsp;
Utilising semantic web technologies provides a machine-readable and interoperable representation of information that can be queried and verified based on open standards such as RDF, OWL, SPARQL, and SHACL  ...  The General Data Protection Regulation (GDPR) is a landmark law regarding privacy and data protection. GDPR stipulates potentially large fines if an organisation is found to not be compliant.  ...  A SPARQL endpoint is an interface for access and querying over stored data.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5281/zenodo.3795513">doi:10.5281/zenodo.3795513</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/qmyotfakhjcdxoksp6pff2uzfm">fatcat:qmyotfakhjcdxoksp6pff2uzfm</a> </span>
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RML2SHACL: RDF Generation Taking Shape

Thomas Delva, Birte De Smedt, Sitt Min Oo, Dylan Van Assche, Sven Lieber, Anastasia Dimou
<span title="2021-12-02">2021</span> <i title="ACM"> Proceedings of the 11th on Knowledge Capture Conference </i> &nbsp;
SHACL was recently introduced to model constraints that RDF graphs should validate. SHACL shapes and their constraints are either manually defined or derived from ontologies or RDF graphs.  ...  In this paper, we present RML2SHACL: an approach to generate SHACL shapes that validate RDF graphs defined by RML mapping rules.  ...  The data graph is the RDF graph under validation, it can be, for example, a named graph in a SPARQL endpoint or a turtle file. An example data graph is shown in listing 2.  ... 
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<a target="_blank" rel="noopener" href="https://web.archive.org/web/20220121005744/https://biblio.ugent.be/publication/8734910/file/8734911.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/56/d4/56d4125aee41a3466f941aeca470f1f81753a1ca.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1145/3460210.3493562"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> acm.org </button> </a>

Swift Linked Data Miner: Mining OWL 2 EL class expressions directly from online RDF datasets

Jędrzej Potoniec, Piotr Jakubowski, Agnieszka Ławrynowicz
<span title="">2017</span> <i title="Elsevier BV"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/etvhqodrjrc3tpf4c7eo6waru4" style="color: black;">Journal of Web Semantics</a> </i> &nbsp;
., a SPARQL endpoint) for OWL 2 EL class expressions to extend an ontology with new SubClassOf: axioms.  ...  The algorithm works by downloading only a small part of the Linked Data source at a time, building a smart index in the memory and swiftly iterating over the index to mine axioms.  ...  To the best of our knowledge, such a pattern cannot be expressed using core constraints defined by Knublauch and Ryman [24] . Fortunately, SHACL is, by design, extensible with SPARQL queries.  ... 
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A Semantic-Enabled Platform for Realizing an Interoperable Web of Things

Jorge Lanza, Luis Sánchez, David Gómez, Juan Ramón Santana, Pablo Sotres
<span title="2019-02-19">2019</span> <i title="MDPI AG"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/taedaf6aozg7vitz5dpgkojane" style="color: black;">Sensors</a> </i> &nbsp;
This paper presents a platform that has been implemented for realizing this vision.  ...  implementation details, it is important to highlight that the platform described in this paper is currently supporting the federation of eleven IoT deployments (from heterogeneous application domains) with over  ...  For this reason, we chose to export the semantic query functionality by enabling a direct SPARQL endpoint conformant with SPARQL protocol for RDF [45] .  ... 
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<a target="_blank" rel="noopener" href="https://web.archive.org/web/20200309143122/https://repositorio.unican.es/xmlui/bitstream/handle/10902/15857/ASemanticEnabledPlatform.pdf;jsessionid=2956D85B9F9DBC864E91266EBD63A552?sequence=3" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/cb/c9/cbc9decafad663b995f29e266c1a8ca0af5ff89a.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.3390/s19040869"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="unlock alternate icon" style="background-color: #fb971f;"></i> mdpi.com </button> </a>
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