Title :
Notice of Retraction
Algorithms and algorithm analysis of logical difference operation of grade lower approximation operator and variable precision 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 construct new operation of approximation operators, and explore its calculation. First it proposes logical difference operation of grade lower approximation operator and variable precision upper approximation operator. Then regular algorithm and structural algorithm are proposed and analyzed, and furthermore it obtains an important conclusion that structural algorithm has advantages in space complexity and time complexity usually. Finally a medical example is given to illustrate the new operation and its algorithms.
Keywords :
approximation theory; computational complexity; rough set theory; grade lower approximation operator; logical difference operation; regular algorithm; space complexity; structural algorithm; time complexity; variable precision upper approximation operator; Algorithm design and analysis; Approximation algorithms; Educational institutions; Intelligent structures; Mathematics; Probabilistic logic; Quantization; Set theory; Software algorithms; Technological innovation; approximation operator; artificial intelligence; graded rough set; logical operation; rough set theory; structural algorithm; variable precision rough set;
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.2010.5485515
