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4.5 History

      ISAAP keeps record of all the  Pareto-optimal solutions and the corresponding  aspiration and  reservation levels. The history of all solutions can be examined in the form of a spreadsheet (see Figure 36 for the illustration) that can be displayed by the  History item from the  ISAAP menu. The records are arranged in the following way:The selected M solutions are displayed in the main  ISAAP window (see e.g. Figure 41 for the illustration). The previous solutions that belong to the set of displayed solutions are marked by small squares with the labels (the default labels shown in Figure 36 can be changed as described above). If the last but one solution does not belong to this set, then it is marked by a small green circle. The last solution is always marked by a white circle without a label and it is connected with the previous solution by a thin line.

Solutions can be added to or removed from the set of displayed solutions by clicking on the corresponding label (see Section 5.4.3 for details). The last solution is automatically added to the displayed solutions, as long as there are empty slots in the set of displayed solutions. The user is asked to rearrange the set of displayed solutions, once this set is full.

The last (rightmost) field in the solution spreadsheet provides space for the user comment or notes related to a corresponding solution.

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Janusz Granat - Institute of Control and Computation Engineering
Marek Makowski - International Institute for Applied Systems Analysis