Forgetting and Update -- an exploration

Knowledge Update (respectively Erasure) and Forgetting are two very different concepts, with very different underlying motivation. Both are tools for knowledge management; however while the former is meant for accommodating new knowledge into a knowledge corpus, the latter is meant for modifying – in fact reducing the expressivity – of the underlying language. In this paper we show that there is an intimate connection between these two concepts: a particular form of knowledge update and literal forgetting are inter-definable. This connection is exploited to enhance both our understanding of update as well as forgetting in this paper. Keywords. Knowledge Update, Erasure, Forgetting, Dalal Distance, Winslett Distance. Knowledge management involves removal of dated information as well as incorporation of new information. Relevant literature provides many different approaches to accomplishing this tasks, including belief change (revision and contraction) [2,3], knowledge update (updat...

• Type: Conference
• Year: 2007
• Where: DAGSTUHL
• Authors: Abhaya C. Nayak, Yin Chen, Fangzhen Lin
• Keywords: DAGSTUHL 2007, Knowledge Management, Knowledge Update, Literal Forgetting, Software Engineering