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| | {{Additional information header}} | | {{Additional information header}} |
| − | From a Web 2.0 point of view, a tag is a non-hierarchical keyword (e.g., a string) assigned to a piece of information, such as a web document. A particular tag can have more than one meaning according to the context in which it is specified. Let us consider the following two article from Wikipedia:
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| − | # <nowiki>http://en.wikipedia.org/wiki/Ulysses_%28novel%29</nowiki>
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| − | # <nowiki>http://en.wikipedia.org/wiki/Paris_Hilton</nowiki>
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| − | The tag 'Paris' can be added to both articles, of course, but it brings with itself two different meanings, even though it is exactly the same string that has been used. In the above example, we want to say that 'Paris' is a first name of the person document 2) is about (i.e., Paris Hilton), while in document 1) 'Paris' is the name of the city in which the subject of the document (the novel 'Ulysses' by James Joyce) was published the very first time.
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| − | Using the reified literal pattern, we can express tags as proper individuals of the class 'Literal' (or of a specific subclass of it, such as 'Tag'), connecting them when refer to the same literal value. Writing the previous example down in a Turtle format, we could have:
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| − | <pre>
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| − | <http://en.wikipedia.org/wiki/Ulysses_%28novel%29> a foaf:Document
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| − | ; prism:keyword :parisTag1 .
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| − | <http://en.wikipedia.org/wiki/Paris_Hilton> a foaf:Document
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| − | ; prism:keyword :parisTag2 .
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| − | :parisTag1 a litre:Literal
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| − | ; litre:hasLiteralValue "Paris"
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| − | ; a [ a skos:Concept
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| − | ; skos:definition "the name associated to a particular city"@en ] .
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| − | :parisTag2 a litre:Literal
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| − | ; litre:hasSameLiteralValueAs :parisTag1
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| − | ; a [ a skos:Concept
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| − | ; skos:definition "the first name of a person"@en ] .
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| − | </pre>
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| − | [[Category:Review assigned]]
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| | {{Scenarios about me}} | | {{Scenarios about me}} |
| | {{Reviews about me}} | | {{Reviews about me}} |
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| | {{Submission to event | | {{Submission to event |
| | |Event=WOP:2010 | | |Event=WOP:2010 |
| − | }} | + | }}[[Category:Review assigned]] |
Reviews about Literal Reification
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This revision (revision ID 10190) takes in account the reviews: none
Other info at evaluation tab
'Ontology Design Patterns'
