Aug 2010 Semantic Mediawiki intro: Difference between revisions

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= Semantic =
= Semantic =


Adding meaning through relationships.
* Computers are not very good at understanding human language
* Adding meaning through relationships.
 


* Triples - expressing relationships
* Triples - expressing relationships
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* David lives in Montreal.
* David lives in Montreal.
** David: Subject
** David: subject
** Lives in: predicate
** Lives in: predicate
** Montreal: object
** Montreal: object
** Subject, predicate, object have their own relationships.


* Montreal is a city.
* Montreal is a city.
* A city is a place.
* A city is a place.
* Montréal is the English spelling of Montréal.
* Montreal is the English word for Montréal.
 
**  What are the names for the place where the St Lawrence and Ottawa rivers meet ?


== Web of data ==
== Web of data ==
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** Properties - birth date, birth place, current location, height
** Properties - birth date, birth place, current location, height
** Inference
** Inference
*** If a person (class) has a child, they're a parent
*** If a person (class) was born in Canada, they speak English or French
**** Guessiness
* Usefully and easily combine different data sources - data network effects
* Usefully and easily combine different data sources - data network effects
** Recipe from one site, ingredients from another
** Recipe from one site, ingredients from another