Re: [xtm-wg] XTM Specification: Final Draft

["Nikita Ogievetsky" <nogievet@cogx.com>]

Bellow are my comments and suggestions.

1)
2.3.2
add default association member to Mandatory Published Subject Indicators

member: The core concept of association member; the generic role played by a
member in an association unless otherwise specified.
http://www.topicmaps.org/xtm/1.0/core.xtm#rolespec

This is important because <roleSpec> is optional.

2)
3.8.3
<roleSpec> element needs a little more description. Currently it is rather
unspecified compared to other elements.
Particularly it would be worth to mention why we do not use <instanceOf>
here.
I think it will be a very common question that people will ask.

3)
3.4.1 and 3.8.3
<instanceOf> and <roleSpec> elements are missing <resourceRef> from their
children content
is it because resource can not be instantiated?
In any case it breaks consistency with the conceptual model (which we all
worry about :-))
because these elements are modeled as shortcuts to "instance-of"
associations and as such should
mirror <member> content.

Alternatively, I propose to add 2 mandatory public subjects:
(I would rather prefer this)

2.3.2
 -
the generic class of all topics whose subject is a resource.
http://www.topicmaps.org/xtm/1.0/core.xtm#addressable
-
the generic class of all topics whose subject is not addressable (is
indicated by a set of resources ).
http://www.topicmaps.org/xtm/1.0/core.xtm#non-addressable
(sorry, could not think of better naming at this late hour)

Instances of #non-addressable topics do not have <resourceRef> in
<subjectIndicator> content.

Then Association templates in the future can be used to allow only
instances of #non-addressable topics as "instanceOf" association members

These PSI may also be useful when modeling <occurrence>.


Thanks,

Nikita.


-------------------------------------------------------
Nikita Ogievetsky,  Cogitech Inc.
Consultant in XML/XSLT/ink/TopicMaps
nogievet@cogx.com  Phone: (917)406-8734
http://www.cogx.com Cogito Ergo XML




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