OWL Primer

Hi All,
as a reader of the primer and not as a master of OWL I woul suggest some minor changes in order to make the document more understandable: 

1) paragraph 4.2 
where is written :<Besides this, it is also reflexive, meaning that every class is its own subclass – this is intuitive as well since clearly, every person is a person etc. >
i would eliminate "this is intuitive as well since clearly, every person is a person etc" since it could be confusing rather than illustrative

2) paragraph 4.4 
where is written: <names might be constructions with “of” or with “has” (wifeOf or hasWife). For verbs (like “to love”) an inflected form (loves) or a passive version with “by” (lovedBy) would prevent unintended readings. >
property label constructed appending prepositions like in wifeOf or lovedBy is questionable. It doesn't avoid the possibility of a mistake. See for example the OWL/XML Syntax of the wife relationship between Bill and Mary. What about using Andrea instead of Bill. Who is the wife ?. A modeler that needs to state that two persons are in
a "wife" relationship probably creates two disjoint classes, Man and Woman with the first class as the domain and the second its range so avoiding all possible confusion.
See for example what TBL write about this issue here 

3) paragraph 5.2 
Maybe can be added the line <Natural language indicators for the usage of existential quantification are words like "one" or “some” > 

6) paragrafo 6.1 
where is written: <it is also possible to indicate that the inverse of a given property is functional >
maybe it means "it is also possible to indicate that the inverse of a given functional property is functional too"

Regards

Luigi Selmi




"It is easy to be certain. One only has to be sufficiently vague" - C.S. Peirce
















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Luigi Selmi, MSc 





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