Thank you for your reply! The answer for my question is:
R_P, R_D, R_M, R_I, R_S, R_N, R_W =0,5
PI_IM, PI_E, PI_G =1
When you put Ri with alfa and beta to the equation:

PI_i=alfa(-ln(Ri))^(1/beta)

then

(PI_P*PI_IM*PI_E+……+PI_W = 1)