“…For instance, Table 9 represents the results of the concordance/discordance indexes for G 1 . The weighted concordance/discordance indexes ϕ A A ( , ) in the χ thpermutation are computed using Equation (27) and the results are shown in Table 10. Finally, the comprehensive concordance/discordance indexes ϕ χ ( = 1, 2, ... ,6) χ are calculated based on Equation (28) It can be shown that G ϕ ϕ = max ( ) = χ χ ⁎ =1,2,...,6 6 .…”