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Semantic Web Application Development with LITEQ [chapter]

Martin Leinberger, Stefan Scheglmann, Ralf Lämmel, Steffen Staab, Matthias Thimm, Evelyne Viegas
<span title="">2014</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;
However, due to a lack of support it is still cumbersome to work with RDF data in modern, object-oriented programming languages, in particular if the data source is only available through a SPARQL endpoint  ...  The Semantic Web is intended as a web of machine readable data where every data source can be the data provider for different kinds of applications.  ...  In LIT EQ F # , both, the intensional and extensional evaluation is implemented by transforming the expressions into SPARQL queries which are then executed against a SPARQL endpoint. 5 Implementation of  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-319-11915-1_14">doi:10.1007/978-3-319-11915-1_14</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/p7botcka6fgxfgiffu6m7mmhia">fatcat:p7botcka6fgxfgiffu6m7mmhia</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170706053800/https://userpages.uni-koblenz.de/~staab/Research/Publications/2014/LITEQ-ISWC-2014.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/fd/04/fd043266db9870ebbd20670cb23f5b1f4a03f104.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-319-11915-1_14"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> springer.com </button> </a>

Expressive and Scalable Query-Based Faceted Search over SPARQL Endpoints [chapter]

Sébastien Ferré
<span title="">2014</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;
Users have to choose between the expressivity of formal languages such as SPARQL, and the usability of tools based on navigation and visualization.  ...  Queries are now verbalized in English, so that no knowledge of SPARQL is ever necessary.  ...  This makes it an appealing approach for semantic search as it reconciles the expressivity of formal languages, the guidance of query builders and faceted search, the readability of natural language interfaces  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-319-11915-1_28">doi:10.1007/978-3-319-11915-1_28</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/kxbbe7j5pzbxleolyo3fjavsui">fatcat:kxbbe7j5pzbxleolyo3fjavsui</a> </span>
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SPARQL with Property Paths [chapter]

Egor V. Kostylev, Juan L. Reutter, Miguel Romero, Domagoj Vrgoč
<span title="">2015</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;
The original SPARQL proposal was often criticized for its inability to navigate through the structure of RDF documents.  ...  evaluation, query containment, and query subsumption.  ...  Property path expressions resemble navigational query languages for graph databases.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-319-25007-6_1">doi:10.1007/978-3-319-25007-6_1</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/jka4xx3b6nbo7cfugf7wzlo2dm">fatcat:jka4xx3b6nbo7cfugf7wzlo2dm</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20161020045203/http://iswc2015.semanticweb.org:80/sites/iswc2015.semanticweb.org/files/93660001.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/a2/41/a24129371c8ced58975090ff5fded4e617aa7530.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-319-25007-6_1"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> springer.com </button> </a>

Top-K Shortest Paths in Large Typed RDF Datasets Challenge [chapter]

Ioannis Papadakis, Michalis Stefanidakis, Phivos Mylonas, Brigitte Endres Niggemeyer, Spyridon Kazanas
<span title="">2016</span> <i title="Springer International Publishing"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/jyopc6cf5ze5vipjlm4aztcffi" style="color: black;">Communications in Computer and Information Science</a> </i> &nbsp;
., RDF and SPARQL). Such information corresponds to patterns expressed as SPARQL queries that are matched against the RDF graph.  ...  SPARQL queries that are agnostic of the underlying RDF graph structure.  ...  Thus, property path queries extend the tradi-tional graph pattern matching expressiveness of SPARQL 1.0 with navigational expressiveness.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-319-46565-4_15">doi:10.1007/978-3-319-46565-4_15</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/n4llby6zzfbrbadbobnuhvad3y">fatcat:n4llby6zzfbrbadbobnuhvad3y</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20190228152708/http://pdfs.semanticscholar.org/9461/77e2960a6d26b4bad4e451b6a99e2b15a159.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/94/61/946177e2960a6d26b4bad4e451b6a99e2b15a159.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-319-46565-4_15"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> springer.com </button> </a>

nSPARQL: A Navigational Language for RDF [chapter]

Jorge Pérez, Marcelo Arenas, Claudio Gutierrez
<span title="">2008</span> <i title="Springer Berlin Heidelberg"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/2w3awgokqne6te4nvlofavy5a4" style="color: black;">Lecture Notes in Computer Science</a> </i> &nbsp;
We also show that nesting is necessary to obtain this last result, and we study the expressiveness of the combination of nested regular expressions and SPARQL operators.  ...  Navigational features have been largely recognized as fundamental for graph database query languages.  ...  A good illustration of this is shown by the following query, which cannot be expressed in SPARQL without some navigational capabilities. Consider the RDF graph shown in Fig. 1 .  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-540-88564-1_5">doi:10.1007/978-3-540-88564-1_5</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/sdvo67iyhvcvpcoeiesedfntfm">fatcat:sdvo67iyhvcvpcoeiesedfntfm</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170813071120/http://marenas.sitios.ing.uc.cl/publications/iswc08.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/c7/96/c7967cc88a62392fd003e75b77d190c4c1478738.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-540-88564-1_5"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> springer.com </button> </a>

nSPARQL: A navigational language for RDF

Jorge Pérez, Marcelo Arenas, Claudio Gutierrez
<span title="">2010</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;
We also show that nesting is necessary to obtain this last result, and we study the expressiveness of the combination of nested regular expressions and SPARQL operators.  ...  Navigational features have been largely recognized as fundamental for graph database query languages.  ...  A good illustration of this is shown by the following query, which cannot be expressed in SPARQL without some navigational capabilities. Consider the RDF graph shown in Fig. 1 .  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.websem.2010.01.002">doi:10.1016/j.websem.2010.01.002</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/6vdrbmekhzcshkuo3endszcjwa">fatcat:6vdrbmekhzcshkuo3endszcjwa</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170813071120/http://marenas.sitios.ing.uc.cl/publications/iswc08.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/c7/96/c7967cc88a62392fd003e75b77d190c4c1478738.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.websem.2010.01.002"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> elsevier.com </button> </a>

Reconciling faceted search and query languages for the Semantic Web

S. Ferré, A. Hermann
<span title="">2012</span> <i title="Inderscience Publishers"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/vfjmasd2xfbmdokeeuf2hzvcma" style="color: black;">International Journal of Metadata, Semantics and Ontologies</a> </i> &nbsp;
Querying languages, such as SPARQL, offer expressive means for searching RDF datasets, but they are difficult to use.  ...  We formalize the navigation of faceted search as a navigation graph, where navigation places are queries, and navigation links are query transformations.  ...  We would like to thank the 20 students, from the University of Rennes 1 and the INSA engineering school, for their volunteer participation to the usability evaluation.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1504/ijmso.2012.048508">doi:10.1504/ijmso.2012.048508</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/a6lrsqsft5f7thpa5yiud4fvtu">fatcat:a6lrsqsft5f7thpa5yiud4fvtu</a> </span>
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Conceptual Navigation in RDF Graphs with SPARQL-Like Queries [chapter]

Sébastien Ferré
<span title="">2010</span> <i title="Springer Berlin Heidelberg"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/2w3awgokqne6te4nvlofavy5a4" style="color: black;">Lecture Notes in Computer Science</a> </i> &nbsp;
The contribution of this paper is to extend conceptual navigation to the browsing of RDF graphs, where concepts are accessed through SPARQL-like queries.  ...  Languages of the SW, on the one hand, are more expressive than FCA, w.r.t. both the representation language (e.g., RDFS vs formal context) and the query language (e.g., SPARQL vs sets of attributes).  ...  Compared to existing conceptual navigation systems, our query language adds variables, binary relations between objects, negation and disjunction, thus covering most of the expressivity of SPARQL.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-642-11928-6_14">doi:10.1007/978-3-642-11928-6_14</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/idigm6qwl5gtvhf6dzhnqsjt2y">fatcat:idigm6qwl5gtvhf6dzhnqsjt2y</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20130701201412/http://hal-univ-rennes1.archives-ouvertes.fr/docs/00/54/98/63/PDF/main.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/db/29/db29e9d1600a2f3114795a43ac781450832e18e2.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-642-11928-6_14"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> springer.com </button> </a>

Combining Faceted Search and Query Languages for the Semantic Web [chapter]

Sébastien Ferré, Alice Hermann, Mireille Ducassé
<span title="">2011</span> <i title="Springer Berlin Heidelberg"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/noh4d7uktraolega74eilgfv5u" style="color: black;">Lecture Notes in Business Information Processing</a> </i> &nbsp;
Querying languages, such as SPARQL, offer expressive means for searching knowledge bases, but they are difficult to use.  ...  We introduce semantic faceted search, the combination of an expressive query language and faceted search to reconcile the two paradigms.  ...  We would like to thank the 20 students, from the University of Rennes 1 and the INSA engineering school, for their volunteer participation to the usability evaluation.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-642-22056-2_57">doi:10.1007/978-3-642-22056-2_57</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/p56ds5yduzg2hcphxynpopxjp4">fatcat:p56ds5yduzg2hcphxynpopxjp4</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20190426200855/https://link.springer.com/content/pdf/10.1007%2F978-3-642-22056-2_57.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/08/4e/084e454d50db1beed6d953599c9172484a6dbf5d.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-642-22056-2_57"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> springer.com </button> </a>

A Generic RDF Transformation Software and Its Application to an Online Translation Service for Common Languages of Linked Data [chapter]

Olivier Corby, Catherine Faron-Zucker, Fabien Gandon
<span title="">2015</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;
We then demonstrate the support it provides to programmers by presenting a selection of STTL-based RDF transformers for common languages.  ...  It relies on the SPARQL Template Transformation Language (STTL) which enables Semantic Web developers to write specific yet compact RDF transformers toward other languages and formats.  ...  Acknowledgements We thank Fuqi Song (Inria), Alban Gaignard (CNRS) and Eric Toguem (U. of Yaoundé, Cameroun) for the setup of the HTTP server.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1007/978-3-319-25010-6_9">doi:10.1007/978-3-319-25010-6_9</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/afwmxe4flbaithvqsfaorcsvny">fatcat:afwmxe4flbaithvqsfaorcsvny</a> </span>
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Querying semantic web data with SPARQL

Marcelo Arenas, Jorge Pérez
<span title="">2011</span> <i title="ACM Press"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/xtq6wnwaszaebg4qf7aw6mllwi" style="color: black;">Proceedings of the 30th symposium on Principles of database systems of data - PODS &#39;11</a> </i> &nbsp;
Thus, one usually obtains partial answers when querying RDF with SPARQL, and the possibility of adding optional information if present is a crucial feature of SPARQL.  ...  Second, RDF databases have a graph structure and are interlinked, thus making graph navigational capabilities a necessary component of SPARQL. Last, but not least, SPARQL has to work at Web scale!  ...  In Section 3, we study the expressiveness of SPARQL and, in particular, we put forward the question of whether SPARQL is the right query language for RDF data.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1145/1989284.1989312">doi:10.1145/1989284.1989312</a> <a target="_blank" rel="external noopener" href="https://dblp.org/rec/conf/pods/ArenasP11.html">dblp:conf/pods/ArenasP11</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/yfcudyqbb5fglet26ugkgcg4v4">fatcat:yfcudyqbb5fglet26ugkgcg4v4</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170706093824/http://marenas.sitios.ing.uc.cl/publications/pods11b.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/f8/65/f8655a068ac24eb3a1a369a817077d6f1abf181f.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1145/1989284.1989312"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> acm.org </button> </a>

ADDING 3D GIS VISUALIZATION AND NAVIGATION TO THE SPARQL QUERY LOOP

W. Beek, E. Folmer, L. Rietveld, T. Baving, V. van Altena
<span title="2018-07-11">2018</span> <i title="Copernicus GmbH"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/i74shj7anreaxjo327fokng66m" style="color: black;">The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences</a> </i> &nbsp;
In this paper we present our integration of 3D visualization into the read-evaluate-print-loop of SPARQL query execution.  ...  We show how the inclusion of 3D visualization has concrete benefits for the SPARQL query writing process, and how our integrated solution is used to answer specific use cases that could not be answered  ...  The height of the shapes now expresses the number of businesses.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5194/isprs-archives-xlii-4-w8-11-2018">doi:10.5194/isprs-archives-xlii-4-w8-11-2018</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/z44yhllyrng6tkzvlh7doivpg4">fatcat:z44yhllyrng6tkzvlh7doivpg4</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20190428024924/https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLII-4-W8/11/2018/isprs-archives-XLII-4-W8-11-2018.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/17/0f/170fffe653ceabab671e1e22c6d8154953d9107c.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5194/isprs-archives-xlii-4-w8-11-2018"> <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>

The SWGET Portal: Navigating and Acting on the Web of Linked Data

Valeria Fionda, Claudio Gutierrez, Giuseppe Pirro
<span title="">2014</span> <i title="Elsevier BV"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/tol7woxlqjeg5bmzadeg6qrg3e" style="color: black;">Social Science Research Network</a> </i> &nbsp;
Instructions are specified via navigational expressions in the NautiLOD language. Such expressions are included into swget scripts that is, RDF documents that can be shared, modified, and reused.  ...  of intelligent agents.  ...  SPARQL 1.1 [14] , with the SERVICE operator, extends the scope of SPARQL to federated queries. swget has a different departure point: it focuses on navigational functionalities, thus departing from querying  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.2139/ssrn.3199100">doi:10.2139/ssrn.3199100</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/o6rbenalgrhwfgwk4mabpvkxea">fatcat:o6rbenalgrhwfgwk4mabpvkxea</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20190428162438/http://repositorio.uchile.cl/bitstream/handle/2250/126957/The-swget-portal-Navigating-and-acting-on-the-web-of-linked-data.pdf;jsessionid=747C0DC1CDFF33097E445295FB5A35AB?sequence=1" 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/af/49/af49ab3101b592bc8edb9cf03c764a56af03fabb.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.2139/ssrn.3199100"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> ssrn.com </button> </a>

LDQL: A query language for the Web of Linked Data

Olaf Hartig, Jorge Pérez
<span title="">2016</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;
One of the novelties of LDQL is that it expresses separately (i) patterns that describe the expected query result, and (ii) Web navigation paths that select the data sources to be used for computing the  ...  We present a formal syntax and semantics, prove equivalence rules, and study the expressiveness of the language.  ...  Navigational Languages for the Web of Linked Data Instead of trying to adapt SPARQL to express queries over the Web of Linked Data, some research groups have started to work on new query languages for  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.websem.2016.10.001">doi:10.1016/j.websem.2016.10.001</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/vfzwaozgbbcg7jnzsqjmflsqna">fatcat:vfzwaozgbbcg7jnzsqjmflsqna</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20180420041833/http://olafhartig.de/files/HartigPerezLDQL_JWSPreprint.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/cd/62/cd6233129d8107474a70ae0c81a954de5780502b.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.websem.2016.10.001"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> elsevier.com </button> </a>

Context-Free Path Queries on RDF Graphs [article]

Xiaowang Zhang, Zhiyong Feng, Xin Wang, Guozheng Rao, Wenrui Wu
<span title="2016-10-07">2016</span> <i > arXiv </i> &nbsp; <span class="release-stage" >pre-print</span>
Most of the navigational query languages used in the RDF community, e.g. property paths in W3C SPARQL 1.1 and nested regular expressions in nSPARQL, are based on the regular expressions.  ...  Navigational graph queries are an important class of queries that canextract implicit binary relations over the nodes of input graphs.  ...  This work is supported by the program of the National Key Research and Development Program of China (2016YFB1000603) and the National Natural Science Foundation of China (NSFC) (61502336, 61373035).  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener" href="https://arxiv.org/abs/1506.00743v3">arXiv:1506.00743v3</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/jor6wnudqjcpfom5zitpcppbey">fatcat:jor6wnudqjcpfom5zitpcppbey</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20191013100311/https://arxiv.org/pdf/1506.00743v3.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/0a/46/0a4635847830cdc7f0e256d9d381b11dcc25452a.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener" href="https://arxiv.org/abs/1506.00743v3" 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>
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