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RE: [ontac-forum] COSMO (upper model) Technical Kick off

To: ONTAC-WG General Discussion <ontac-forum@xxxxxxxxxxxxxx>
From: dbedford@xxxxxxxxxxxxx
Date: Sun, 16 Oct 2005 12:41:19 -0400
Message-id: <OF4E6F3CEF.B1A65CE1-ON8525709C.005BAC50-8525709C.005BAC5E@xxxxxxxxxxxxx>
To form a comprehensive ontology at either at the concept level, or at the entity level, you need both a faceted data structure (one for each entry), and a network data structure to manage the relationships.  Each entry has to have a faceted description.  Each aspect of the description may have other types of data structures that manage variations and relationships (some can be hierarchical, some flat, some ring structures, and some networked).  A lattice comes closest to describing a networked taxonomy in that it supports multiple and different kinds of relationships among entities.  However, there needs to be a way to anchor on any one of the entries in the lattice - this is the faceted structure.  
You can scale up on this type of a structure because it is flexible and supports multiple points of entry, depending on your application and the context from which you want to view the entity at any point in time.
I hope these verbal descriptions make sense. 
Best regards,
Denise Bedford
World Bank 

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