Configuring the Approximation Loop Multi-objective Options

If you selected Use multi-objective optimization when configuring the Approximation Loop strategy, you can access and configure the Multi-objective Options.

  1. Double-click the Exploration component icon .

    The Exploration Component Editor appears.

  2. From the Exploration Component Editor Exploration Strategy list, select Approximation Loop.

  3. In the Approximation Loop Options area, click Advanced Options.

  4. Click the Multi-objective Options tab, and enter or select the following:

    Option Description
    Weighted sum of objectives This option means that the approximate Pareto points found within each sub-optimization will be sorted and selected based on the value of the combined objective function.
    Desired levels of objectives This option means that the approximate Pareto points found within each sub-optimization will be sorted and selected based on the Chebyshev distance from the desired levels of all objectives. You can enter the designed levels for all your objective parameters using the Configure desired levels list. These levels create an imaginary nadir point for the algorithm that selects the Pareto points. The desired levels should be set sufficiently far away from the achievable levels of output parameters.
    One point only with the best selected criterion value If this option is selected, only one best approximate Pareto point will be analyzed and added to the internal approximation data set.
    A specified number of best Pareto points If this option is selected, you can enter a specific value for the number of approximate Pareto points to be analyzed and added to the interal approximation data set.
    A percentage of the entire Pareto set (1...100%) If this option is selected, you can enter a percentage value that will control how many approximate Pareto points are analyzed and added to the internal approximation data set. In addition, you can select the Maximum number of points for the approximate Pareto set.

  5. Click OK to save your changes and to close the Advanced Options dialog box.

  6. Click OK to save your changes and to close the Exploration Component Editor.