A Method of β Value in Variable Precision Rough Sets Model
Zou Wu · Computer Technology and Development · 2009
The correct classification rate βis one of the important parameter of variable precision rough sets model.To the problem that the variable precision rough set lacks a feasible method to determine the β parameter,an effective method is developed to confirm the range of β value by the γ value of approximate quality of classification in this paper.The example of computing and analyzing with the proposed method shows its effectiveness.Algorithm based on the quality of similar request,through the correct classification of the different collections,determines the scope of the threshold quickly and effectively.