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Just enough OE, Part 1

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New to Ontology? Got to start somewhere?

New to Ontology? Got to start somewhere?
Lecture notes by Paola Di Maio.

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Just enough OE, Part 1 Just enough OE, Part 1 Presentation Transcript

  • JUST ENOUGH ONTOLOGY ENGINEERING Paola Di Maio Mae Fa Luang University Chiang Rai, Thailand
  • Part 1
    • Definition of Ontology
    • vs
    • Ontology Definition
  • WHAT IS AN ONTOLOGY?
    • There is a lot of discussion about what an ontology is, and what it is not, and especially, a lot of pontification about what it should be. Answers are very different and vague. You get equivalent answers to the question 'what is reality?'
  • DEFINING DEFINITION The definition of the word 'ontology'
    • Definition 1. this refers to definining the word 'ontology' and describe its meaning and context. It refers to
    • A dictionary entry that can be the result of a word search.
    • www.myrkr.in-berlin.de/dictionary/using.html
    • essential semantic features of a concept as well as those that distinguish the concept from all others.
    • www.termium.gc.ca/didacticiel_tutorial/english/lesson1/page1_3_5_e.html
    • A definition binds a name to a logical expression.
    • www.isi.edu/isd/LOOM/PowerLoom/documentation/manual/manual_12.html
  • DEFINING THE WORD 'ONTOLOGY'
    • The majority of those who attempted an exhaustive definition of ontology, have only partially succeeded and sone got lost (or they are still trying)
    • Only by first establishing the context that they are applying their definition to, they come up with a partial answer
    • Welcome to the world of ontology
  • EXISTING DEFINITIONS: what already exists, or at least what is visible
    • It is necessary (albeit daunting) to start from 'what already exists'. Look up how many definitions for 'ontology' you find. Make a list, group them based on similarity and/or scope. Decide which definition best applies to your reality.
  • 'Ontology definition'
    • This is something else entirely. Its a 'specification' that defines the logical and physical artifacts (concepts, terms, formalisms, knowledge representation, logic etc) that constitute any given ontology
    • See Ontology Definition Metamodel
  • ONTOLOGY DEFINION
    • So you now you know what an ontology is for you, and you have to create one, this is referred to as ' defining your ontology'
    • But it ain't that simple either
  • Take your time
    • See you in Part 2