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Abstract: Anyone who's tried building a knowledge-base soon observes the following phenomenon: almost everything you write down is false. By this we mean that for almost every axiom, there exist special cases when it does not hold. For example "Cars have four wheels." and "Birds fly." are typically but not universally true statements. As a result, we require some mechanism to allow such statements to be dropped or `relaxed' in the face of strong evidence to the contrary. This is particularly the case... (Update)
Active bibliography (related documents): More All
0.1: KM - The Knowledge Machine 2.0: Users Manual - Clark, Porter (1998) (Correct)
0.1: Cyc: A Case Study In Ontological Engineering - Ee Ri Ng (Correct)
0.1: Building Concept Representations from Reusable Components - Clark, Porter (1997) (Correct)
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0.4: Object Descriptions Revisited - Clark, Porter (Correct)
0.4: KI Revisited - Clark, Porter (Correct)
0.2: Building Domain Representations from Components - Clark, Porter (1996) (Correct)
BibTeX entry: (Update)
@misc{ clark-concept,
author = "Peter Clark and Bruce Porter",
title = "Concept Construction as Constraint Relaxation",
url = "citeseer.ist.psu.edu/483348.html" }
Citations (may not include all citations):49 Model construction operators (context) - Clancey - 1992
12 Formal theories of belief revision (context) - Rao, Foo
8 Minimal change and maximal coherence: A basis for belief rev.. (context) - Rao, Foo
6 Microtheories: An ontological engineer's guide (context) - Blair, Guha et al. - 1992
Documents on the same site (http://www.cs.utexas.edu/users/pclark/working_notes/): More
Reference Resolution and Views Working Note 25 - Knowledge (Correct)
From Natural Language to KM Representations - Clark (Correct)
More Thoughts on Views - Clark, Thompson, Barker, Fan (2001) (Correct)
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