DefinedMeaning talk:UMBEL Subject Concept (1144365)
May I ask what this is about? --Tosca 23:57, 24 November 2009 (UTC)
- It's a link to the UMBEL RDF ontology. RDF stands for Resource Description Framework and is for, well, describing resources in a computer readable format. UMBEL stands for Upper Mapping and Binding Exchange Layer and is a lightweight, subject concept reference structure for the Web.
- And though these links do not add any new information, as Kipcool noted elsewhere, at least not on first glance, they allow computers to "know" what the DM is about. The usefullness for this might become clear when one understands what RDF is for. It allows people to describe anything in the world, for example, a Restaurant guide could use a known RDF scheme to describe Restaurants, their location (geo-coordinates), the cuisine etc. in a computer readable format and by having links to the classes or concepts, computers could "know" that with 'Restaurant' the guide means the same as we do with the 'Restaurant' DM and present for example the Russion name or Italian description and thus "convert" the computer readable RDF to something more human friendly. The same goes for any other concept it might use, like one defining a Country, a Street address etc. RDF is a, if not the, arising Web 3.0 standard, or in other words, it is a semantic web standard that will eventually allow AI. And by adding these links I hope to make Omega Wiki become more useful since, for example, it also delivers POS or pronounciation information and links several different words in different languages to a DM and thus to RDF ontology concepts. This might be useful in connection with Natural Language Processing and speech recognizing applications. --14:24, 26 November 2009 (UTC)
xmlns:ontology="http://www.geonames.org/ontology#" xmlns:owl="http://www.w3.org/2002/07/owl#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:core="http://www.w3.org/2004/02/skos/core#">
<owl:sameAs rdf:resource="http://www.eionet.europa.eu/gemet/concept/749"/> <core:definition xml:lang="en">a coastal indentation between two capes or headlands, larger than a cove but smaller than a gulf</core:definition> <core:inScheme rdf:resource="#H"/> <core:prefLabel xml:lang="en">bay</core:prefLabel>
The above is a set of RDF statements from the geonames ontology describing a bay. At the top, some shorthands are definded for later use, for example '<owl:sameAs>' translates to '<http://www.w3.org/2002/07/owl#sameAs>' and is a URI representing the property "is the same as". The RDF version of geonames uses this concept to say that something is a bay. And the '<owl:sameAs' links the concept to a concept in the GEMET ontology (that's right, the very one that has been imported to OW), saying "this concept is the same as the one at http://www.eionet.europa.eu/gemet/concept/749" Now, as I see it, 'http://www.eionet.europa.eu/gemet/concept/749' and 'http://www.geonames.org/ontology/#H.BAY' are computer readable synonyms or translations of DefinedMeaning:bay (320), just like 'bay' is a human-readable synonym/translation of that DM and therefore might even rather belong to the translation/synonym section than the annotation section. --dh 15:05, 26 November 2009 (UTC)