In this example, the variables SES and URBANICITY are class variables for which the
value ? denotes a missing value. Because a question mark does not denote a missing
value in the terms that SAS defines a missing value (that is, a blank or a period), SAS
Enterprise Miner sees it as an additional level of a class variable. However, the
knowledge that these values are missing will be useful later in the model-building
process.
To use the Replacement node to interactively specify that such observations of these
variables are missing:
1.Select the Modify tab on the Toolbar.
2.Select the Replacement node icon. Drag the node ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month, and much more.
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.
Julian F.
Head of Cybersecurity
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.
Addison B.
Field Engineer
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.
Amir M.
Data Platform Tech Lead
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.