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The Edit Build Text Node dialog allows you to define transformations for text columns; the transformed text columns can be used in data mining.
To launch Edit Build Text Node, right-click the Build Text node and select Edit or just double-click the node.
The Build Text dialog has two panes. At the top of the pane you can specify an optional Case ID or you can invoke the Stoplist Editor.
The top pane provides a list of attributes. You can view either All attributes or just Text and Transformed attributes only. For each attribute, Name, Type, Source, Type, and Output. Type is the data type of the attribute; the type of an attribute that has a text transform applied is DM_NESTED_NUMERICALS
. Source is the source column for a transformed column. Transform is the type of text transform, Token or Theme. Output indicates if the attribute is passed on to subsequent nodes. The default is to pass all nodes on.
To define a transformation, select a text attribute and click
The Add/Edit Text Transform dialog opens. Define the text transformation. Repeat for each text attribute.
After you define transformations, you can edit them. To edit a transform, select the name of the transformed attribute and click
See Add/Edit Text Transform for more information.
To delete a transformation, select the name of the transformed attribute and click
You can include or exclude attributes. An excluded attribute is not passed to subsequent operations. To exclude an attribute, select it and in the Output column of the grid, click
. The icon changes to
, and the column is not passed on; if you click this icon again, the attribute is included. You may want to exclude the non-transformed version of a text column.
Click OK when you have finished defining text transforms.
Run the node. After the node executes, the bottom half of the pane allows you to View the Text Transform.