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Articles

Preorder-based triangle: a modified version of bilattice-based triangle for belief revision in nonmonotonic reasoning

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Pages 665-690 | Received 21 Mar 2017, Accepted 18 Mar 2018, Published online: 18 May 2018
 

Abstract

Bilattice-based triangle provides an elegant algebraic structure for reasoning with vague and uncertain information. But the truth and knowledge ordering of intervals in bilattice-based triangle cannot handle repetitive belief revisions which is an essential characteristic of nonmonotonic reasoning. Moreover, the ordering induced over the intervals by the bilattice-based triangle is not sometimes intuitive. In this work, we construct an alternative algebraic structure, namely preorder-based triangle and we formulate proper logical connectives for this. It is also demonstrated that Preorder-based triangle serves to be a better alternative to the bilattice-based triangle for reasoning in application areas, that involve nonmonotonic fuzzy reasoning with uncertain information.

Acknowledgements

The second author acknowledges the financial support received from Department of Science and Technology, Government. of India in the form of INSPIRE Fellowship.

Notes

No potential conflict of interest was reported by the authors.

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