[
Date Prev][
Date Next][
Thread Prev][
Thread Next][
Date Index][
Thread Index]
[
List Home]
|
RE: [higgins-dev] Two bug fixes to HOWL (higgins.owl) [nonbreakingchange]
|
SergeyL wrote:
>
> Paul,
>
> > 2) bug fix: allowed the range of higgins:attribute to be either
> > higgins:Value (as it was) or higgins:Attribute (new--this object is the
> > holder of metadata about the entire set of values (i.e. "ranges") of a
> set
> > of higgins:attributes
>
> 1. SimpleValue can not contain attributes (only ComplexValue can), so it
> will be more correct to allow the range of higgins:attribute to be
> ComplexValue, not Value.
Both ComplexValue and SimpleValue are sub-classes of Value. By stating the
range as Value we allow both possibilities.
>
> 2. Really higgins:attribute is a property of DS (or complex value) that
> contains higgins:Value (simple or complex). What sence is there for
> higgins:Attribute class to be the range of higgins:attribute? Do you mean
> that we should use the same property to store as values of attribute as
> metadata of this attribute?
All will become more clear as I work on some examples. But here is where I'm
headed...
The higgins:Attribute is a holder of metadata for a set of higgins:Values.
Here is an example of its use: Consider foo:eyeColor to be a property of a
DS (a sub-property of higgins:attribute property). Imagine three instances
of this eyeColor property: two of them point to higgins:Values (e.g. two
higgins:Strings having associated literal values of "blue" and "green"
respectively), and the third points to a higgins:Attribute that holds
metadata about the set of Values. As a trivial example, this
higgins:Attribute could hold the metadata property "numberOfValues" and have
a range/value of "2".
Thus the metadata (numberOfValues = 2) is bound to the values
("blue","green") as follows:
* the relevant ObjectProperty instances (all three of them) have the same
URI (in our example, "foo:eyeColor)
* we follow a convention that there is at most one higgins:Attribute
instance for a given higgins:attribute sub-property
-Paul
>
> Thanks,
> Sergey Lyakhov
>
> ----- Original Message -----
> From: "Paul Trevithick" <paul@xxxxxxxxxxxxxxxxx>
> To: "'Higgins (Trust Framework) Project developer discussions'"
> <higgins-dev@xxxxxxxxxxx>
> Sent: Friday, May 25, 2007 6:01 PM
> Subject: [higgins-dev] Two bug fixes to HOWL (higgins.owl) [non
> breakingchange]
>
>
> > 1) bug fix: allowed the domain of higgins:attribute to be either
> > DigitalSubject (as it was) or ContextObject (new)
> >
> > 2) bug fix: allowed the range of higgins:attribute to be either
> > higgins:Value (as it was) or higgins:Attribute (new--this object is the
> > holder of metadata about the entire set of values (i.e. "ranges") of a
> set
> > of higgins:attributes
> >
> > Changes have been published here [1]
> >
> > [1] http://www.eclipse.org/higgins/ontologies/2006/higgins.owl
> >
> > -Paul
> >
> > _______________________________________________
> > higgins-dev mailing list
> > higgins-dev@xxxxxxxxxxx
> > https://dev.eclipse.org/mailman/listinfo/higgins-dev
>
> _______________________________________________
> higgins-dev mailing list
> higgins-dev@xxxxxxxxxxx
> https://dev.eclipse.org/mailman/listinfo/higgins-dev
