In [ALP + 00] we proposed a comprehensive solution to the problem of knowledge base updates. Given the original knowledge base KB and a set of update rules represented by the updating knowledge base KB 0 , we dened a new updated knowledge base KB = KBKB 0 that constitutes the update of the knowledge base KB by the knowledge base KB 0 : In [APPP99] we introduced a fully declarative, high-level language for knowledge updates called LUPS that describes transitions between consecutive knowledge states and can therefore be viewed as a language for dynamic knowledge representation. The main objective of the present paper is to show that the dynamic knowledge representation paradigm introduced in [ALP + 00] and the associated language LUPS, dened in [APPP99], constitute natural, powerful and expressive tools for representing dynamically changing knowledge. We do so by demonstrating the applicability of the dynamic knowledge representation This work was partially ..
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