%0 Conference Paper
%B Third International Conference, KSEM 2009
%D 2009
%T An Anytime Algorithm for Computing Inconsistency Measurement
%A Yue Ma
%A Guilin Qi
%A Guohui Xiao
%A Zuoquan Lin
%A Pascal Hitzler
%X Measuring inconsistency degrees of inconsistent knowledge bases is an important problem as it provides context information for facilitating inconsistency handling. Many methods have been proposed to solve this problem and a main class of them is based on some kind of paraconsistent semantics. In this paper, we consider the computational aspects of inconsistency degrees of propositional knowledge bases under 4-valued semantics. We first analyze its computational complexity. As it turns out that computing the exact inconsistency degree is intractable, we then propose an anytime algorithm that provides tractable approximation of the inconsistency degree from above and below.We show that our algorithm satisfies some desirable properties and give experimental results of our implementation of the algorithm.
%B Third International Conference, KSEM 2009
%G eng
%0 Conference Paper
%B Proceedings of Ninth European Conference on Symbolic and Quanlitative Approaches to Reasoning with Uncertainty
%D 2007
%T An Algorithm for Computing Inconsistency Measurement by Paraconsistent Semantics
%A Yue Ma
%A Guilin Qi
%A Zuoquan Lin
%A Pascal Hitzler
%X Measuring inconsistency in knowledge bases has been recognized as an important problem in many research areas. Most of approaches proposed for measuring inconsistency are based on paraconsistent semantics. However, very few of them provide an algorithm for implementation. In this paper, we first give a four-valued semantics for first-order logic and then propose an approach for measuring the degree of inconsistency based on this four-valued semantics. After that, we propose an algorithm to compute the inconsistency degree by introducing a new semantics for first order logic, which is called S[n]-4 semantics.
%B Proceedings of Ninth European Conference on Symbolic and Quanlitative Approaches to Reasoning with Uncertainty
%C Hammamet,Tunisia
%P 91-102
%G eng
%0 Conference Paper
%B 4th European Semantic Web Conference, ESWC2007
%D 2007
%T Algorithms for Paraconsistent Reasoning with OWL
%A Yue Ma
%A Zuoquan Lin
%A Pascal Hitzler
%B 4th European Semantic Web Conference, ESWC2007
%C Innsbruck, Austria
%G eng