Sökning: "RDF"

Visar resultat 1 - 5 av 34 avhandlingar innehållade ordet RDF.

1. 1. Querying RDF Schema Views of Relational Databases

   Författare :Johan Petrini; Tore Risch; Larry Kerschberg; Uppsala universitet; []
   Nyckelord :query processing; partial evaluation; rdf; rdf schema; view; relational databases; semantic web;

   Sammanfattning : The amount of data found on the web today and its lack of semantics makes it increasingly harder to retrieve a particular piece of information. With the Resource Description Framework (RDF) every piece of information can be annotated with properties describing its semantics. LÄS MER

3. 2. Scalable Preservation, Reconstruction, and Querying of Databases in terms of Semantic Web Representations

   Författare :Silvia Stefanova; Tore Risch; Stefan Decker; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; RDF; RDFS; RDF view; SPARQL; SPARQL query processing; rewrite optimization; Topic Maps; querying of RDF views; archive relational databases; reconstruct archived databases; Datavetenskap med inriktning mot databasteknik; Computer Science with specialization in Database Technology;

   Sammanfattning : This Thesis addresses how Semantic Web representations, in particular RDF, can enable flexible and scalable preservation, recreation, and querying of databases.An approach has been developed for selective scalable long-term archival of relational databases (RDBs) as RDF, implemented in the SAQ (Semantic Archive and Query) system. LÄS MER

4. 3. Advanced TCAD Simulations and Characterization of Semiconductor Devices

   Författare :Tony Ewert; Jörgen Olsson; Marcel Pelgrom; Uppsala universitet; []
   Nyckelord :Electronics; MOSFET; RDF; random dopant fluctuation; asymmetric; parametric mismatch; TCAD; compact modeling; fluctuation model; Elektronik;

   Sammanfattning : Today, micro- and nano-electronic devices are becoming more complex and advanced as the dimensions are shrinking. It is therefore a very challenging task to develop new device technologies with performance that can be predicted. LÄS MER

5. 4. Semantic Web Queries over Scientific Data

   Författare :Andrej Andrejev; Tore Risch; Kjell Orsborn; Ruslan Fomkin; Gerhard Weikum; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; RDF; SPARQL; Arrays; Query optimization; Second-order functions; Scientific workflows; Datavetenskap med inriktning mot databasteknik; Computer Science with specialization in Database Technology;

   Sammanfattning : Semantic Web and Linked Open Data provide a potential platform for interoperability of scientific data, offering a flexible model for providing machine-readable and queryable metadata. However, RDF and SPARQL gained limited adoption within the scientific community, mainly due to the lack of support for managing massive numeric data, along with certain other important features – such as extensibility with user-defined functions, query modularity, and integration with existing environments and workflows. LÄS MER

7. 5. Flexible Authoring of Metadata for Learning : Assembling forms from a declarative data and view model

   Författare :Fredrik Enoksson; Olle Bälter; Ambjörn Naeve; Pawlowski Jan; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Metadata; RDF; Semantic Web; metadata editors; metadata authoring; Computer science; Datavetenskap;

   Sammanfattning : With the vast amount of information in various formats that is produced today it becomes necessary for consumers ofthis information to be able to judge if it is relevant for them. One way to enable that is to provide information abouteach piece of information, i.e. provide metadata. LÄS MER