A New Knowledge Characteristics Weighting Method Based on Rough Set and Knowledge Granulation

Algorithm 1

Method to determine characteristics weight.

Input: The knowledge base ;

Output: the weight of the characteristic, ;

(1) compute the equivalence class

(2) for   to   do

(3) compute the equivalence class

(4) end for

(5) for   to   do

(6) compute the equivalence class

(7) for   to   do

(8) compute the upper approximation on the set ,  

(9) compute the lower approximation on the set ,  

(10) end for

(11) compute the discernibility of the knowledge characteristics

(12) end for

(13) for   to   do

(14) compute the discernibility of the knowledge characteristics

(15) end for