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Subject: Comments on Controlled Values Proposal
Here are some initial thoughts/reactions to the proposal. In general I like the proposal and think it could be really useful. This design starts to overlap with the Topic Map standard in terms of providing a way to define taxonomies or ontologies as systems of names, potentially with associated definitional content. While I don't think that subject-defining maps should *be* Topic Maps we should probably make it clear where there is a clear alignment of semantics or a disjoint of semantics that could cause confusion. - leaf vs. non-leaf subjectdefs The current proposal doesn't make a syntactic distinction between leaf and non-leaf subject definitions. I'm not sure it should but we might want to think about how a subject definition's nature changes when it's a non-leaf rather than a leaf. - "qualified" key values for disambiguation A given leaf value may be ambiguous with respect the total set of all leaf subject definitions defined within a given map. We will likely need a defined way to disambiguate references to specific leafs. - subject identifiers for subjectDefs Topic maps have the general notion of "subject identifiers", which are universally unique names that serve to uniquely identify a given "subject" within the set of all possible subjects. Within a topic map, two topics that use the same subject identifier are, by definition, about the same subject and can be blindly merged (in the sense of combining all the topic properties to create a new, effective topic). It would probably be useful to have the same ability for subject definitions. - Ability to refer to a value path ,e.g., "os.linux.redhat" vs "organizations.female.redhat" This would be one possible way to handle references to ambiguous subjects. - General mechanism of indicating that a map branch is not intended for output rendition (this is the same issue as for the keyref proposal). Cheers, Eliot -- W. Eliot Kimber Senior Solutions Architect Really Strategies, Inc. "Bringing Strategy, Content, and Technology Together" Main: 610.631.6770 www.reallysi.com www.rsuitecms.com Sent using the Microsoft Entourage 2004 for Mac Test Drive.
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