Normative Models are models in which the best of all possible alternatives.
To find it, the decision maker should examine all the alternatives and prove that the one selected the best, which the person would normally want.
This process is basically optimization.
In operational terms, optimization can be achieved in one of three ways:
Get the highest level of goal attainment from a given set of resources. For example, which alternative will yield the maximum profit from an investment $10 million
Find the alternative with the highest ratio of goal attainment to cost ( e.g., profit per dollar invested ) or maximize productivity.
Find the alternative with the lowest cost ( or smallest amount of other resources ) that will meet an acceptable level of goals. For example, if your task is to select hardware for an intranet with a minimum bandwidth, which alternative will accomplish this goal at the least cost?