Decision Optimization notebook tutorial change the Decision Optimization scenario

Changing the scenario data

To solve with different versions of your model or data, you can create new scenarios in the Decision Optimization experiment UI. In this tutorial, create a new scenario and change the data. You can also create a new scenario and change the model.

About this task

You can change your input data to examine the effects on the model. For example, you might exclude hot dogs from the solution to generate a vegetarian variant of the diet.

Procedure

To create a new scenario:

Click the Open scenario pane icon to open the Scenario pane.
Use the Create Scenario drop-down menu to create a new scenario from the current one.
Rename the duplicate scenario.
For example, change Scenario 1 copy to Scenario 2), and click Create.
Working in your new scenario, in the Prepare data view, open the diet_food data table in full mode.
Locate the entry for Hotdog at row 9, and set the qmax value to 0 to exclude hot dog from possible solutions.
Switch to the Build model view and run the model again.
You can see the impact of your changes on the solution by switching from one scenario to the other.

Results

The vegetarian variant of the diet excludes hot dog from the solution but adds raisin bran and adjusts quantities of other foods.

In the Visualization view, the solution is displayed for the current scenario in the Solution page. To add another chart to display the previous scenario, click the Chart icon and then edit it. In the Chart Widget Editor that opens, give this chart a name and select Scenario 1 from the Select scenario drop-down menu. Remove the current scenario by clearing the Always show the current scenario checkbox. Select solution in the Table section. Click Save and close the Chart Widget Editor. You now have two bar charts that display the two scenarios in your Visualization view.

You can change the type of chart and its display attributes. For example, to see the raisin bran in the bar chart, change the width to 1000 in the JSON tab of the Chart widget editor.

You can view summary information for all your scenarios at a glance in the Overview pane. By selecting a scenario and clicking the three dots, you can perform actions such as duplicate, rename, generate a Python notebook, export the scenario, or save it for deployment, for any selected scenario in this view. See Viewing all scenarios in a Decision Optimization experiment for more information on how to configure this pane.