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Letteratura scientifica selezionata sul tema "RDF datasets"

Autore: Grafiati

Pubblicato: 8 giugno 2024

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Tesi sul tema "RDF datasets"

1

AZEVEDO, MARCELO COHEN DE. "AN APPLICATION BUILDER FOR QUERING RDF/RDFS DATASETS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2010. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=15978@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>Com o crescimento da web semântica, cada vez mais bases de dados em RDF contendo todo tipo de informações, nos mais variados domínios, estão disponíveis para acesso na Internet. Para auxiliar o acesso e a integração dessas informações, esse trabalho apresenta uma ferramenta que permite a geração de aplicações para consultas a bases em RDF e RDFS através da programação por exemplo. Usuários podem criar casos de uso através de operações simples em cima do modelo RFDS da própria base. Esses casos de uso podem ser generalizados e com

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2

Arndt, Natanael, Norman Radtke, and Michael Martin. "Distributed collaboration on RDF datasets using Git." Universität Leipzig, 2016. https://ul.qucosa.de/id/qucosa%3A15781.

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Abstract (sommario):

Collaboration is one of the most important topics regarding the evolution of the World Wide Web and thus also for the Web of Data. In scenarios of distributed collaboration on datasets it is necessary to provide support for multiple different versions of datasets to exist simultaneously, while also providing support for merging diverged datasets. In this paper we present an approach that uses SPARQL 1.1 in combination with the version control system Git, that creates commits for all changes applied to an RDF dataset containing multiple named graphs. Further the operations provided by Git are u

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3

Fernández, Javier D., Miguel A. Martínez-Prieto, Axel Polleres, and Julian Reindorf. "HDTQ: Managing RDF Datasets in Compressed Space." Springer International Publishing, 2018. http://epub.wu.ac.at/6482/1/HDTQ.pdf.

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HDT (Header-Dictionary-Triples) is a compressed representation of RDF data that supports retrieval features without prior decompression. Yet, RDF datasets often contain additional graph information, such as the origin, version or validity time of a triple. Traditional HDT is not capable of handling this additional parameter(s). This work introduces HDTQ (HDT Quads), an extension of HDT that is able to represent quadruples (or quads) while still being highly compact and queryable. Two HDTQ-based approaches are introduced: Annotated Triples and Annotated Graphs, and their performance is compared

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4

Fernandez, Garcia Javier David, Sabrina Kirrane, Axel Polleres, and Simon Steyskal. "HDT crypt: Compression and Encryption of RDF Datasets." IOS Press, 2018. http://epub.wu.ac.at/6489/1/HDTCrypt%2DSWJ.pdf.

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Abstract (sommario):

The publication and interchange of RDF datasets online has experienced significant growth in recent years, promoted by different but complementary efforts, such as Linked Open Data, the Web of Things and RDF stream processing systems. However, the current Linked Data infrastructure does not cater for the storage and exchange of sensitive or private data. On the one hand, data publishers need means to limit access to confidential data (e.g. health, financial, personal, or other sensitive data). On the other hand, the infrastructure needs to compress RDF graphs in a manner that minimises the amo

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5

Sejdiu, Gezim [Verfasser]. "Efficient Distributed In-Memory Processing of RDF Datasets / Gezim Sejdiu." Bonn : Universitäts- und Landesbibliothek Bonn, 2020. http://d-nb.info/1221669214/34.

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6

Moreno, Vega José Ignacio. "A faceted browsing interface for diverse Large-Scale RDF Datasets." Tesis, Universidad de Chile, 2018. http://repositorio.uchile.cl/handle/2250/168108.

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Abstract (sommario):

Magíster en Ciencias, Mención Computación.<br>Las bases de conocimiento en RDF contienen información acerca de millones de recursos, las cuales son consultadas utilizando el lenguaje estándar de consultas para RDF: SPARQL. Sin embargo, esta información no está accesible fácilmente porque requiere conocer el lenguaje SPARQL y la estructura de los datos a consultar; requisitos que no cumple un usuario común de internet. Se propone una interfaz de navegación por facetas para estos datos de gran tamaño que no requiere conocimientos previos de la estructura ni de SPARQL. La navegación por facetas

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7

Arndt, Natanael, and Norman Radtke. "Quit diff: calculating the delta between RDF datasets under version control." Universität Leipzig, 2016. https://ul.qucosa.de/id/qucosa%3A15780.

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Abstract (sommario):

Distributed actors working on a common RDF dataset regularly encounter the issue to compare the status of one graph with another or generally to synchronize copies of a dataset. A versioning system helps to synchronize the copies of a dataset, combined with a difference calculation system it is also possible to compare versions in a log and to determine, in which version a certain statement was introduced or removed. In this demo we present Quit Diff 1, a tool to compare versions of a Git versioned quad store, while it is also applicable to simple unversioned RDF datasets. We are following an

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8

Sherif, Mohamed Ahmed Mohamed. "Automating Geospatial RDF Dataset Integration and Enrichment." Doctoral thesis, Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-215708.

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Abstract (sommario):

Over the last years, the Linked Open Data (LOD) has evolved from a mere 12 to more than 10,000 knowledge bases. These knowledge bases come from diverse domains including (but not limited to) publications, life sciences, social networking, government, media, linguistics. Moreover, the LOD cloud also contains a large number of crossdomain knowledge bases such as DBpedia and Yago2. These knowledge bases are commonly managed in a decentralized fashion and contain partly verlapping information. This architectural choice has led to knowledge pertaining to the same domain being published by independe

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9

Rihany, Mohamad. "Keyword Search and Summarization Approaches for RDF Dataset Exploration." Electronic Thesis or Diss., université Paris-Saclay, 2022. http://www.theses.fr/2022UPASG030.

Testo completo

Abstract (sommario):

Un nombre croissant de sources de données sont publiées sur le web, exprimées dans les langages proposés par le W3C comme RDF, RDF (S) et OWL. Ces sources représentent un volume de données sans précédent disponible pour les utilisateurs et les applications. Afin d’identifier les sources les plus pertinentes et de les utiliser, il est nécessaire d’en connaître le contenu, par exemple au moyen de requêtes écrites en Sparql, le langage d’interrogation proposé par le W3C pour les sources de données RDF. Mais cela nécessite, en plus de la maîtrise du langage Sparql, de disposer de connaissances sur

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10

Ben, Ellefi Mohamed. "La recommandation des jeux de données basée sur le profilage pour le liage des données RDF." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT276/document.

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Abstract (sommario):

Avec l’émergence du Web de données, notamment les données ouvertes liées, une abondance de données est devenue disponible sur le web. Cependant, les ensembles de données LOD et leurs sous-graphes inhérents varient fortement par rapport a leur taille, le thème et le domaine, les schémas et leur dynamicité dans le temps au niveau des données. Dans ce contexte, l'identification des jeux de données appropriés, qui répondent a des critères spécifiques, est devenue une tâche majeure, mais difficile a soutenir, surtout pour répondre a des besoins spécifiques tels que la recherche d'entités centriques

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