Logical Decisions - Classweb

properties dialog box can be selected. Then you will see an AHP
matrix like the one in Figure 7-8. LDW will include only the
alternatives you selected in the matrix. Complete the matrix
assessments as described in the section above on Analytic
Hierarchy Process.
Figure 7-8. AHP matrix for AHP SUF example.
When you have completed the assessment, click the "Done"
button and LDW will compute a SUF curve based on the matrix.
If the alternatives selected do not cover the entire range for the
measure, LDW will assign zero to the least preferred level, and
one to the most preferred level. Then LDW will assign the
utilities computed from the AHP matrix to the levels associated
with the alternatives. LDW will connect these points with straight
lines.
If the alternatives in the matrix cover the entire range for the
active measure, LDW will expand the range for the utilities in the
matrix so that the highest utility is one and the lowest is zero.
LDW will modify the other utilities accordingly. LDW will then
use these adjusted utilities to define points on a SUF curve. LDW
will connect the points with straight lines.
As an example, assume that the range for the HD size measure in
Figure 7-8 is 60 to 120 mb (measuring the hard disk size in a
computer buying decision). Also assume that the alternatives
have the following levels on the HD size measure:
Alternative HD size
Mail Order 1 20 MHZ 65 mb
Local 1 25 MHZ 80 mb
Regional 1 25 MHZ 100 mb
Local 1 33 MHZ 110 mb
The utilities on the diagonal of the matrix will be assigned to
measure levels as follows:
7-20 Section 7 -- Using LDW 2: Assessing