Just enough OE, Part 1

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

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Just enough OE, Part 1

  1. 1. JUST ENOUGH ONTOLOGY ENGINEERING Paola Di Maio Mae Fa Luang University Chiang Rai, Thailand
  2. 2. Part 1 <ul><li> Definition of Ontology </li></ul><ul><li>vs </li></ul><ul><li>Ontology Definition </li></ul>
  3. 3. WHAT IS AN ONTOLOGY? <ul><li>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?' </li></ul>
  4. 4. DEFINING DEFINITION The definition of the word 'ontology' <ul><li>Definition 1. this refers to definining the word 'ontology' and describe its meaning and context. It refers to </li></ul><ul><li>A dictionary entry that can be the result of a word search. </li></ul><ul><li>www.myrkr.in-berlin.de/dictionary/using.html </li></ul><ul><li>essential semantic features of a concept as well as those that distinguish the concept from all others. </li></ul><ul><li>www.termium.gc.ca/didacticiel_tutorial/english/lesson1/page1_3_5_e.html </li></ul><ul><li>A definition binds a name to a logical expression. </li></ul><ul><li>www.isi.edu/isd/LOOM/PowerLoom/documentation/manual/manual_12.html </li></ul>
  5. 5. DEFINING THE WORD 'ONTOLOGY' <ul><li>The majority of those who attempted an exhaustive definition of ontology, have only partially succeeded and sone got lost (or they are still trying) </li></ul><ul><li>Only by first establishing the context that they are applying their definition to, they come up with a partial answer </li></ul><ul><li>Welcome to the world of ontology </li></ul>
  6. 6. EXISTING DEFINITIONS: what already exists, or at least what is visible <ul><li>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. </li></ul>
  7. 7. 'Ontology definition' <ul><li>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 </li></ul><ul><li>See Ontology Definition Metamodel </li></ul>
  8. 8. ONTOLOGY DEFINION <ul><li>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' </li></ul><ul><li>But it ain't that simple either </li></ul>
  9. 9. Take your time <ul><li>See you in Part 2 </li></ul>

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