Table 1 The confused matrix of weights

Level 1

_{w 12}

_{w 13}

_{w 14}

_{w 1j}

_{w 1L}

Level 2

_w22

_w23

_w24

_w2j

_{w 2L}

Level 3

×

_{w 33}

_{w 34}

_{w 3j}

_{w 3L}

Level 4

×

×

_{w 44}

_{w 4j}

_{w 4L}

Levell

×

×

×

_wlj

_{w 1L}

Level L

×

×

×

×

_{w LL}