Logical Decisions - Classweb

The check box labeled "Allow Representatives for Sub-Goals" lets
you use a member of a sub-goal as its representative in the weight
assessment. LDW infers the sub-goal's weight from the member's
weight in the active goal's assessment and its weight in the subgoal's
MUF. Not all assessment methods allow the use of
representatives.
Assessing Weights with Tradeoffs
The "Tradeoff" method defines weights for a goal by having you
identify pairs of simple alternatives that differ in two members
but that you prefer equally. LDW identifies weights for the two
members that give these equally preferred pairs an equal utility
for the goal.
Each tradeoff defines the ratio of the weights for the two members
in the tradeoff. These ratios --plus the fact that the weights must
sum to one -- let LDW compute the weights for all the goal’s
members from the tradeoffs. This computation is more
complicated if there are interactions between the members. The
discussions on page 9-44 and in Appendix A describe how LDW
computes weights using tradeoffs in more detail.
You begin the tradeoff assessment process by clicking the "Assess"
button in the “Weights” tab in the assess weights dialog box .
When you do this you will see the tradeoffs dialog box shown in
Figure 7-11.
7-26 Section 7 -- Using LDW 2: Assessing