"[SOLVED] Windowing issue - index notation"

cliftonarms

There is a problem with the Windowing process that effects subsequent mathematical attribute operations.

Windowing creates new attributes with the appended index format -1, -2, -3, -n i.e "att-1"

The problem comes downstream when you want to perform mathematical functions on "att-1" as Rapidminer will read this as att MINUS 1.

This can be fixed with a renaming process, but is a pain when you have 100s of attributes.


Possible solution : Better to use an underscore index format ( or make it user selectable ) in the Windowing function.

MariusHelf

You are right, the naming is less than optimal. We'll probably change that in a later release.
Until then, you can use the Rename by Replacing operator; set replace_what to - and replace by to _.

Best regards,
Marius

cliftonarms

Well spotted on the replace operator - Thanks.