Thursday 16 August 2007

Updates versus Revisions

Taken from 'Belief Revision' (1992) (page 183), Edited by Peter Gardenfors

... we make a fundamental distinction between two kinds of modifications to a knowledge base. The first one, update, consists of bringing the knowledge base up to date when the world described by it changes...

The second type of modification, revision, is used when we are obtaining new information about a static world...

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