Description Logic in Practice: A CLASSIC Application

Abstract

entally evolving knowledge base; and 5. handle errors in a way that keeps the knowledge base consistent, but also provides useful information to the user. We will provide some examples in our domain that illustrate each of these areas. Class and object descriptions: As in any application, we need a domain ontology in which to work. Our home theater application contains a knowledge base including a concept taxonomy and instance descriptions. 1 DACS IV--2000 is a digital cross--connect system that processes digitized signals for some US standard transmission rates. 2 Classic is freely available for academic purposes, and commercially available for other purposes. It has been distributed to over 85 universities and is in use in many internal projects within AT&T. The knowledge base was created by working with an expert in the domain. The database of instance information was also hand--compiled for this small application; howe