An Abductive Framework for Computing Knowledge Base Updates
Chiaki Sakama and Katsumi Inoue
Theory and Practice of Logic Programming, vol.3(6), pages 671-713,
Cambridge University Press, 2003.
This paper introduces an abductive framework for updating
knowledge bases represented by extended disjunctive programs.
We first provide a simple transformation from abductive programs to
update programs which are logic programs specifying
changes on abductive hypotheses.
Then, extended abduction, which was introduced by the same authors
as a generalization of traditional abduction,
is computed by the answer sets of update programs.
Next, different types of updates,
view updates and theory updates
are characterized by abductive programs and computed by update programs.
The task of consistency restoration is also realized
as special cases of these updates.
Each update problem is comparatively assessed from the computational
The result of this paper provides a uniform framework for different types
of knowledge base updates, and each update is computed using existing
procedures of logic programming.
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