Revenir à la page [[intro_histoire_numerique:conceptualisation_information|conceptualisation de l'information]].



==== Documentation ====


  * https://en.m.wikipedia.org/wiki/OntoClean
  * [[http://ufo-c.blogspot.com/2013/09/rigidity-rigid-anti-rigid-and-semi.html|Rigidity: Rigid, Anti-Rigid and Semi-Rigid types]] (UFO-C on OntoUML)
  * N. Guarino/C. A. Welty, « An Overview of OntoClean », in Steffen Staab, ed., Handbook on ontologies,  2nd ed. Berlin: Springer, 2009. 


==== Principes ====


  *  Rigidity (time-indexed qualities or classifications)
    * Essential properties define an entity throughout its life
    * A ‘student’ : not a class but a time-indexed property of a person
  *  Identity (terms and classes)
    * map vs a sketch vs an information object of type ‘map’ or ‘sketch’
  *  Unity (parthood)
    * A crowd of humans vs a group having a plan
  * Dependence (one instance implies the existence of another one)
    * No human without a brain, no human without a birth