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Node rule

The Node Rule panel defines the selection rule behind a single node in terms of the dimensions used to build the tree.

Consider the following simple tree:

The Last Rule is just information about the single split which created this node from its parent.

The last rule reiterates the rule on the Box Tree, stating that Node 1 is created by selecting people with

  • Income = Unknown, £20k-£30k….

Full Rule

The Full Rule shows information about all the splits going back to the root node. The rule at the top of this list is the same as the Last Rule.

The Full Rule for Node 3 involves selecting people with:

  • Occupation = Unknown, Director, … (the level 2 split)

    AND Income = <10k, 10-20-k, 80k...(the level 1 split)

With the Combine Rules option ticked, the sequence of rules applied in the Full Rule is simplified if possible, by combining rules based on the same dimension.

The two separate income rules can be combined together.