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Upper-Level Decision Tree defines the upper portion of the decision tree. The system allows only one Upper-Level Decision Tree and it will be applied to all Decision Tree sets in the system. Typically, Upper-Level Decision Tree uses high-level variables in the logic, such as Pavement Type, Traffic Leve or Roadway Category. Then, the lower level decision trees are assigned to the end nodes defined in upper level decision tree.
The configuration of Upper-Level Decision Tree is done in the Upper-Level Decision Tree window. Navigate to it by following the steps below:
- Select Setup from the top banner menu
- Click Network Analysis Setup
- Click Decision Trees
- Click Upper Level Decision Tree menu
To view or update the Upper Level Decision Tree, follow the steps below:
Open the Upper Level Decision Tree window. From here you can make changes on the Upper-Level Decision Trees. Out of the box, the Upper-Level Decision Tree has a Pavement Type variable. You can either use it as is, or expand from here, or delete all the nodes and configure different variables.
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| Note: The set of decision tree variables that may be selected are configured in the Upper-Level Dec Tree Variable column in the Setup PMS Analysis window. See Chapter 5 for more information on configuring data variables. |
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