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SPARQL with Property Paths
[chapter]
2015
Lecture Notes in Computer Science
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We will show that techniques for SPARQL without property paths [12, 20] cannot be straightforwardly adapted to deal with the general language. ...
Then, in Section 4, we study evaluation, containment, and subsumption for SPARQL with property paths that do not allow for optional matching. ...
We begin the study of these properties with OPT-free classes of SPARQL with property paths. ...
doi:10.1007/978-3-319-25007-6_1
fatcat:jka4xx3b6nbo7cfugf7wzlo2dm
SPARQL with property paths on the Web
2017
Semantic Web Journal
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Recently, SPARQL has been extended with a navigational feature called property paths (PPs). However, the semantics of SPARQL restricts the scope of navigation via PPs to single RDF graphs. ...
On one hand, the SPARQL query language, originally defined for querying single datasets, has been enhanced with features to query federations of datasets; however, this attempt is not sufficient to cope ...
Only recently, with the addition of property paths (PPs) in version 1.1 [15] , SPARQL has been enhanced officially with such features. ...
doi:10.3233/sw-160237
fatcat:baiq7beuenhfhf5ktdr2kom5ta
IOS Press SPARQL with Property Paths on the Web
2016
Semantic Web
unpublished
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Recently, SPARQL has been extended with a navigational feature called property paths (PPs). However, the semantics of SPARQL restricts the scope of navigation via PPs to single RDF graphs. ...
On one hand, the SPARQL query language, originally defined for querying single datasets, has been enhanced with features to query federations of datasets; however, this attempt is not sufficient to cope ...
Only recently, with the addition of property paths (PPs) in version 1.1 [15] , SPARQL has been enhanced officially with such features. ...
fatcat:ivphr63gjngn3isnp4p3v2h2au
SPARQL Builder: Constructing SPARQL Query by Traversing Class-Class Relationships for Life Science Databases
2016
Joint International Conference of Semantic Technology
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Based on the method, we developed a system for constructing a SPARQL query named SPARQL Builder. ...
We showcase how to generate a SPARQL query according to user's interest by using the SPARQL Builder system. ...
Note that a class path is not always simple path because the same classes may appear twice or more in the path with different properties. ...
dblp:conf/jist/YamaguchiKLYMK16a
fatcat:grsayhuxyvcmbmado4yl7gp4l4
Semantic Data Acquisition by Traversing Class–Class Relationships Over Linked Open Data
[chapter]
2016
Lecture Notes in Computer Science
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One of the important needs to extract data from LOD is to find a path of resources connecting given two classes, each of which has an end resource of the path. ...
Based on the concept, we have been developing data acquisition system named SPARQL Builder assisting users in semantic queries for LOD. ...
Note that a class path is not always simple path because the same classes may appear twice or more in the path with different properties. ...
doi:10.1007/978-3-319-50112-3_11
fatcat:4bhyxwe7pzcspb2grud64ewg3u
Evaluation of SPARQL Property Paths via Recursive SQL
2013
Alberto Mendelzon Workshop on Foundations of Data Management
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We investigate the evaluation of SPARQL queries with property paths in a relational RDF store. ...
Property paths, a part of the proposed SPARQL 1.1 standard, allow for non-trivial navigation in RDF graphs. ...
We believe this is the first study of the evaluation of SPARQL property paths in the relational setting.
Preliminaries SPARQL Property Paths. We use the terminology from [2] . ...
dblp:conf/amw/YakovetsGG13
fatcat:fqxettvdgvbiroalr6wpszj7si
Simplified SPARQL REST API - CRUD on JSON Object Graphs via URI Paths
[article]
2018
arXiv
pre-print
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To lower the initial hurdle, we represent the underlying graph as an interlinked view of nested JSON objects that can be traversed by the API path. ...
Within the Semantic Web community, SPARQL is one of the predominant languages to query and update RDF knowledge. ...
Similarly to SPARQL, the followed property path is not shown in the result (collapsed). ...
arXiv:1805.01825v1
fatcat:4s52cerpf5fi5pi3h6t6toeeju
Federation and Navigation in SPARQL 1.1
[chapter]
2012
Lecture Notes in Computer Science
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We analyze some classical theoretical problems such as expressiveness and complexity, and discuss algorithmic properties. ...
SPARQL is now widely used as the standard query language for RDF. ...
Optimizing property path queries with DISTINCT As discussed in the previous section, SPARQL 1.1 is tractable in terms of data complexity if one considers the existential semantics · ∃ G and · ∃(path) G ...
doi:10.1007/978-3-642-33158-9_3
fatcat:vtnu3llk3naf7kivy3bz3orn5y
Discovering diversified paths in knowledge bases
2018
Proceedings of the VLDB Endowment
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To close this gap of functionality, we present JEDI, a system that extends a popular SPARQL engine, Jena, with the ability to compute paths connecting entities in a KG. ...
Furthermore, our solution is not limited to a single property path pattern but supports queries containing multiple property path patterns. ...
There is usually no advanced support for combining property path expressions with other standard SPARQL operators. ...
doi:10.14778/3229863.3236245
fatcat:k3mvb3ayzfajvamnv5krsnvpgu
Counting beyond a Yottabyte, or how SPARQL 1.1 property paths will prevent adoption of the standard
2012
Proceedings of the 21st international conference on World Wide Web - WWW '12
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We provide several intractability results, that together with our empirical results, provide strong evidence against the current semantics of SPARQL 1.1 property paths. ...
This has led the W3C to include the property path feature in the upcoming version of the standard, SPARQL 1.1. ...
We assume some familiarity with RDF and the most simple SPARQL features, in particular, with the SELECT and FILTER keywords [10] , and we only treat property paths at an intuitive level (we formalize ...
doi:10.1145/2187836.2187922
dblp:conf/www/ArenasCP12
fatcat:wpjfcgedpnfynjjvovhxljwbiy
Prototype Implementation of SPARQL Builder for Life-science Databases by Intelligent Schema Analysis on RDF datasets
2014
Workshop on Semantic Web Applications and Tools for Life Sciences
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Metadata publication in accordance with the semantic web as a database is a trend for providing and integrating various life-science data. ...
To address this problem, we propose an intelligent SPARQL query builder that enables users to build a query without knowledge of SPARQL or the data schema. ...
We thank Dr Yasunori Yamamoto for useful comments for improvement of the SPARQL Builder metadata specification. ...
dblp:conf/swat4ls/KobayashiLWKY14
fatcat:7ezfgxtatnbrzc37nlmlukk6pe
An Intelligent SPARQL Query Builder for Exploration of Various Life-science Databases
2014
International Semantic Web Conference
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To overcome this problem, we propose an intelligent SPARQL query builder that aids users with no knowledge on SPARQL in building queries. ...
Since Semantic Web technologies, such as Resource Description Framework (RDF), are expected to provide efficient data integration technologies, many lifescience databases are published in RDF with SPARQL ...
Property category Let T p be a set of triples with predicate p, where p is a property outside of rdf:type, rdfs:subClassOf, or any other properties defined in RDF Schema 1.1. ...
dblp:conf/semweb/YamaguchiKLWK14
fatcat:glvuevxfsrgjtbni4xzpzirkgu
Regular paths in SparQL: querying the NCI Thesaurus
2008
AMIA Annual Symposium Proceedings
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In this work we describe GLEEN, a regular path expression library, which extends the RDF query language SparQL to support complex path expressions over OWL and other RDF-based ontologies. ...
In particular we show how relatively simple GLEEN-enhanced SparQL queries can create views of the OWL version of the NCI Thesaurus that match the views generated by the web-based NCI browser. ...
We also acknowledge the Jena and ARQ projects for the solid RDF/SparQL foundation they provide. ...
pmid:18999137
pmcid:PMC2656016
fatcat:wbyy5v6ezjawdkbsgsqujvnjn4
Extended Property Paths: Writing More SPARQL Queries in a Succinct Way
2015
PROCEEDINGS OF THE THIRTIETH AAAI CONFERENCE ON ARTIFICIAL INTELLIGENCE AND THE TWENTY-EIGHTH INNOVATIVE APPLICATIONS OF ARTIFICIAL INTELLIGENCE CONFERENCE
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We introduce Extended Property Paths (EPPs), a significant enhancement of SPARQL property paths. EPPs allow to capture in a succinct way a larger class of navigational queries than property paths. ...
The second strategy leverages a translation algorithm of EPPs into SPARQL queries that can be executed on existing SPARQL processors. ...
Conclusions and Future Work We introduced Extended Property Paths (EPPs), a significant extension of SPARQL property paths. ...
doi:10.1609/aaai.v29i1.9188
fatcat:xqdzbunuhjbfrmfiznudrbyo6i
Towards Efficient Path Query on Social Network with Hybrid RDF Management
[article]
2014
arXiv
pre-print
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Property path query in SPARQL can express this type of operation, but its implementation suffers from performance problem considering the ever growing data size and complexity of OSN.In this paper, we ...
In this hybrid framework, we realize an efficient in-memory algebra operator for property path query using graph traversal, and estimate the cost of this operator to cooperate with existing cost-based ...
P P is a regular pattern expression defining the property path. ...
arXiv:1405.6500v2
fatcat:yfyym5stofamvgsc2d6h3757ym
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