ABSTRACT
In some cases, there is only one dependent variable of interest. The values of the independent variables are chosen so that the process is maximized or minimized, or to obtain some predetermined target. However, sometimes, there may be two or more responses, both of which must be considered. Unless the two responses are highly correlated, it is unlikely that the values of the independent variables needed to achieve the maximum value of one response will be the same as those needed for the maximum value of a second response. Hence, the most favorable solution must be sought bearing in mind the values of both responses. This is termed the optimum solution, and the process is known as optimization or multicriteria decision-making.
