A pragmatic glossary of Semantic Technology terms<br />All rights reserved by ©www.tenforce.com<br />Terminology<br />
URI<br />Uniform Resource Identifier<br />URI’s are used to identify the smallest pieces of information that we want to re...
RDF<br />Resource Description Framework<br />RDF is the standard datamodel in semantic technology. It tells us to work wit...
SPARQL<br />Simple Protocol and RDF Query Language<br />SPARQL is the standard to query RDF data. In fact SPARQL is to RDF...
RDFS<br />RDFSchema<br />Semantic standard for modeling. Very restricted features, it allows creating classes and subclass...
OWL<br />Web Ontology Language<br />A broader set of classes and properties for more expressive modeling. Subsets of OWL a...
SKOS<br />Simple Knowledge Organization System<br />SKOS is a vocabulary to describe Knowledge Organization Systems like t...
SWRL, RIF<br />Semantic Web Rule Language, Rule Interchange Format<br />Rule languages built upon semantic standards. Such...
RDFa<br />RDF in attributes*<br />The standard to turn HTML into RDF. As such HTML is the 2nd biggest source of RDF data!<...
R2ML<br />RDB to RDF Mapping Language*<br />The standard to convert data in Relational Databases into RDF. As such RDB’s a...
LOD<br />Linked Open Data<br />An initiative to open up your data, publish them according to semantic web standards and li...
LOD2<br />An FP7-project to develop the infrastructure that is needed to build LOD, or the data web. Kicked-off in septemb...
ontology<br />“theory about the nature of being”<br />Literally ‘ontology’ means the study of being. It is a common term i...
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Services semantic technology_terminology

  1. 1. A pragmatic glossary of Semantic Technology terms<br />All rights reserved by ©www.tenforce.com<br />Terminology<br />
  2. 2. URI<br />Uniform Resource Identifier<br />URI’s are used to identify the smallest pieces of information that we want to refer to<br />[ URI’s were created in the early 90’s as a way to express names and addresses of objects on the world wide web. On the semantic web we recycle thi<br />2<br />
  3. 3. RDF<br />Resource Description Framework<br />RDF is the standard datamodel in semantic technology. It tells us to work with triples. We divide the world in small pieces of information:<br />something has a relationship with another thing<br />Sophie has father John<br />(Sophie, hasFather, John)<br />a triple!<br />By the way, every part of the triple gets a URI to refer to it. Also the relationship!<br />In this way everything gets connected to each other...<br />
  4. 4. SPARQL<br />Simple Protocol and RDF Query Language<br />SPARQL is the standard to query RDF data. In fact SPARQL is to RDF Data Stores what SQL is for Relational Databases.<br />
  5. 5. RDFS<br />RDFSchema<br />Semantic standard for modeling. Very restricted features, it allows creating classes and subclasses, properties and subproperties.<br />
  6. 6. OWL<br />Web Ontology Language<br />A broader set of classes and properties for more expressive modeling. Subsets of OWL are specified to keep it performant, like OWL-DL for Description Logic purposes.<br />
  7. 7. SKOS<br />Simple Knowledge Organization System<br />SKOS is a vocabulary to describe Knowledge Organization Systems like thesauri or taxonomies. Like any vocabulary it is created using terms in a specific language, OWL in this case.<br />
  8. 8. SWRL, RIF<br />Semantic Web Rule Language, Rule Interchange Format<br />Rule languages built upon semantic standards. Such languages can be usefull to express rules that could not be expressed in your model using strictly OWL.<br />
  9. 9. RDFa<br />RDF in attributes*<br />The standard to turn HTML into RDF. As such HTML is the 2nd biggest source of RDF data!<br />* a standard in progress...<br />
  10. 10. R2ML<br />RDB to RDF Mapping Language*<br />The standard to convert data in Relational Databases into RDF. As such RDB’s are the largest source of RDF data!<br />* a standard in progress...<br />
  11. 11. LOD<br />Linked Open Data<br />An initiative to open up your data, publish them according to semantic web standards and link them to other sources. <br />This leads to a web of data, as compared to the current web of documents. <br />The semantic web is actually a virtual database, no longer a virtual library...<br />
  12. 12. LOD2<br />An FP7-project to develop the infrastructure that is needed to build LOD, or the data web. Kicked-off in september 2010, for 4 years.<br />Check the status of the project at lod2.eu<br />
  13. 13. ontology<br />“theory about the nature of being”<br />Literally ‘ontology’ means the study of being. It is a common term in filosophy and psychology since centuries. <br />In a semantic technology context ‘ontology’ refers to the model typically used to capture the meaning of data. It is a representation of the knowledge domain you’re working in. Can be expressed in SKOS, OWL or RDFS.<br />

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