Title :
Algorithms and Algorithm Analysis of Logical Difference Operation of Grade Upper Approximation Operator and Variable Precision Lower Approximation Operator
Author :
Zhang, Xian-Yong
Author_Institution :
Coll. of Math. & Software Sci., Sichuan Normal Univ., SNU, Chengdu, China
Abstract :
This paper is to construct new operation of approximation operators, and explore its calculation. First it proposes logical difference operation of grade upper approximation operator and variable precision lower 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. Finally a medical example is given to illustrate the new operation and its algorithms.
Keywords :
computational complexity; data analysis; rough set theory; algorithm analysis; grade upper approximation operator; logical difference operation; medical example; space complexity; structural algorithm; variable precision lower approximation operator; Algorithm design and analysis; Approximation algorithms; Educational institutions; Information analysis; Intelligent structures; Mathematics; Probabilistic logic; Quantization; Set theory; Software algorithms; approximation operator; artificial intelligence; graded rough set; logical operation; rough set theory; structural algorithm; variable precision rough set;
Conference_Titel :
Information and Computing (ICIC), 2010 Third International Conference on
Conference_Location :
Wuxi, Jiang Su
Print_ISBN :
978-1-4244-7081-5
Electronic_ISBN :
978-1-4244-7082-2
DOI :
10.1109/ICIC.2010.84
