Len
One way to force Region in as the first input variable is
to set it as the only Input in a preceding Type node.
Be aware that a Nominal Region variable will branch
on every Region by default. What is the overall file size?
What is the number of regions and the distribution of
records across regions? C5 is trying to create homogeneity
after the split relative to before the split, and in forcing
Region in you are overriding what variable would enter.
If you wish to keep Region as the first splitter, you could
split the file by regions and run C5 within each Region.
Tony Babinec
-----Original Message-----
From: SPSSX(r) Discussion <
[hidden email]> On Behalf Of LenP
Sent: Tuesday, March 19, 2019 12:14 AM
To:
[hidden email]
Subject: SPSS Modeler C5.0
Hi, I'm running a Decision Tree with C5.0. Is there a way to force a
specific attribute to break first? I would like to create a tree where the
region variable is the first rule. Can suggestions?
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