87 search results - page 4 / 18 » Roughness bounds in rough set operations |
PRL
2007
13 years 10 months ago
2007
: We propose a new feature selection strategy based on rough sets and Particle Swarm Optimization (PSO). Rough sets has been used as a feature selection method with much success, b...
INFORMATICALT
2008
13 years 11 months ago
2008
Abstract. The study of databases began with the design of efficient storage and data sharing techniques for large amount of data. This paper concerns the processing of imprecision ...
SLOGICA
2008
13 years 10 months ago
2008
In the paper we explore the idea of describing Pawlak's rough sets using three-valued logic, whereby the value t corresponds to the positive region of a set, the value f -- to...
ICCI
1993
14 years 3 months ago
1993
The notion of interval sets is introduced as a new kind of sets, represented by a pair of sets, namely, the lower and upper bounds. The interval-set algebra may be regarded as a c...
EUSFLAT
2009
13 years 8 months ago
2009
Abstract-- The concept of an M-approximative system is introduced. Basic properties of the category of M-approximative systems and in a natural way defined morphisms between them a...