Confirming the Range of β Parameter in the Variable Precision Rough Sets Model
Bo Zhong · Journal of Hunan Institute of Science and Technology · 2008
The correct classification rate β is 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;in this paper,an effective method is developed to confirm the range of β value by theγ value of approximate quality of classification.First,we calculate all the value of β reduction according to reduction condition on the base that β value is certain.Furthermore,we will confirm the range of β value on the base that the approximate quality of classification is fixed;Finally,an example is given to approve the effectiveness of the proposed method.