Running an optimisation
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To view the results of an optimisation run, choose File » Load » Import results. This will load the Results dialog where you can view the results in various graphical and tabular formats using the corresponding tabs.
Optimisation run results are compared to the Pareto Front. The Pareto Front is the set of solutions which have differing performance on each of the objectives. A solution is not on the Pareto Front if there is an alternative that is better on atleast one of the objectives but no worse on any objectives. In this case the solution is discarded as the alternative is clearly preferable. If the Pareto Front solutions are not changing, the optimiser may have satisfactorily completed its multi-objective search.
Figure 1. Insight results, hypervolume plots
On completion of the run, you will be prompted to save the results, which can then be viewed at a later stage if required.
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Click the 2D Graph tab to view two-dimensional scatterplots of the results. The example shown in Figure 1 3 has three objectives defined: $reliabilityNeg, $unitcost and $Yieldneg. The drop-down menus for the x and y axes list all the objectives specified in the optimisation. To view the graph for a particular relationship, choose the relevant items from the drop-down menus and click Plot. The points on the graph are forming the Pareto Front for this optimisation.
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- Choose the type of plot (scattered or pareto) in the Plot Option drop-down menu;
- In the Selected Filter drop-down menu, choose the filter and click Edit Filter;
- This opens the Edit Filter dialog (shown in Figure 2) showing the entire range of values.
- You can change the filter's name using the Filter Title panel.
- Edit any value by double clicking on the cell you wish to change and enter the required value (in the Lower Filter or Upper Filter columns); and
- Click OK to save changes close the Edit Filter dialog or Cancel to quit without saving.
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3. Insight results, 2D graph
Figure 2. Insight results, Filter properties
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