Title :
Notice of Retraction
Logical difference model of grade lower approximation operator and grade upper approximation operator
Author_Institution :
Coll. of Math. & Software Sci., Sichuan Normal Univ., Chengdu, China
Abstract :
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
This paper is to explore new improved graded rough set model. Based on logical difference operation of grade approximation operators, it proposes logical difference model of grade lower approximation operator and grade upper approximation operator. In the new model, basic structure and properties are obtained, and macroscopic algorithm and structural algorithm are proposed. Finally the new model is illustrated by a medical example.
Keywords :
approximation theory; rough set theory; grade lower approximation operator; grade upper approximation operator; logical difference model; macroscopic algorithm; medical example; rough set model; structural algorithm; Approximation algorithms; Data analysis; Educational institutions; Humans; Logic; Mathematical model; Mathematics; Quantization; Rough sets; Set theory; approximation operator; artificial intelligence; grade; graded rough set; logical operation; rough set model;
Conference_Titel :
Computer Engineering and Technology (ICCET), 2010 2nd International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-6347-3
DOI :
10.1109/ICCET.2010.5485516
