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Subject: Draft Minutes of ICOM TC Meeting, September 30, 2009
Minutes of ICOM TC Meeting, September 30, taken by Eric S.
Chan Agenda 1. Roll Call 2. Review the OO and RDF model 3. AOB 1. The following eligible members were present Deirdre Lee Laura Dragan Rafiul Ahad Eric Chan 2. Review the OO and RDF model The participants reviewed two open issues from the September
16 TC meeting: 1. how to represent abstract class
and interface in RDF 2. how to interpret the
distinguished properties inherited from super-classes in RDF. Deirdre and Laura would explore the following two ideas: For issue 1, introduce an RDF schema extension to declare
certain RDF classes as abstract class to emulate the notions of abstract class and
interface in UML. Examples of abstract classes in the proposal are Entity,
Scope, Subject, and Artifact. Examples of interfaces are Parental, Container, and
Accessor. (See Figure 1 of http://wiki.oasis-open.org/icom/Categorisation). For issue 2, introduce an RDF schema extension to declare
certain RDF properties as abstract property, analogous to the notion of
abstract class for issue 1. For example, hasElementOfFolder is an abstract
property to be overridden by concrete properties such as hasElementOfHeterogeneousFolder,
hasElementOfCalendar, hasElementOfAddressBook, etc. Any instance of hasElementOfFolder
property must also be an instance of one of the concrete sub-properties. Through
some axioms for abstract property, the hasElementOfCalendar property can be the
only property applicable to Calendar. Thus we can restrict the elements of Calendar
to the range of hasElementOfCalendar property. Similarly, the elements of AddressBook
can be restricted to the range of hasElementOfAddressBook property. 3. AOB The meeting was adjourned. |
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