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Driver License Qualification Decision Tree

Step 1: Setting the Properties for the Decision Tree​

When crafting a decision tree, begin by entering the essential properties:

Decision Tree Properties

  • Name: A distinct label that serves as the decision tree identifier.
  • Project: Designate the project associated with this tree.
  • Type: Choose 'Decision Tree' from the available logic block categories.
  • Description: A concise yet informative summary detailing the tree precise function.
  • Is Action: A boolean indicator determining if the tree is designated as an action.

Step 2: Adding the necessary inputs​

With the tree structure established and its foundational elements in place, we now move on to feeding it the pivotal data points required for decision-making:

Decision Tree Inputs

  • Driver Age: An integer field capturing the age of the driver.
  • Driving Exam Result: A string field denoting the exam outcome, either 'pass' or 'fail'.

Step 3: Designing the decisions​

Now that we have the information we need, let's set up the rules to decide the outcome. We'll have two main checks:

Decision Tree Inputs

  • Driver Age Decision: An expression employing the 'is greater than' function to ascertain if the driver's age surpasses 18.
  • Driving Exam Result Decision: An expression harnessing the 'contains' function to discern whether the exam's verdict was a 'pass' or 'fail'.

Step 4: Defining the outcome​

After defining the decisions and the logic behind them, now we should set the outcome that the decision tree will return

Decision Tree Outcome

  • Driver License Eligibility: A boolean field that reflects whether the criteria are met, returning 'true' for eligible and 'false' for ineligible based on the decision outcomes.

Step 5: Connecting the Dots - Building the Decision Tree​

In this concluding step, we'll interlink the decisions and assign corresponding outcomes for each determination.

Decision Tree

From the tree above, the process begins by evaluating whether the driver's age exceeds 18. If affirmed, we transition to the subsequent assessment of the driving exam result. However, if the age is below 18, the evaluation ceases immediately, yielding a 'not eligible' verdict.

Delving into the driving exam assessment, a negative result similarly leads to a 'not eligible' conclusion. Conversely, a positive outcome signifies the driver's eligibility for the license.