From the course: Machine Learning and AI: Advanced Decision Trees with SPSS
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How QUEST handles nominal variables
From the course: Machine Learning and AI: Advanced Decision Trees with SPSS
How QUEST handles nominal variables
- [Instructor] Let's learn more about the QUEST algorithm by seeing how it handles nominal variables. Now remember, nominal variables are separate and distinct categories that are not meaningfully ordered. To begin, let's open a stream that's been provided for you called source and type node stream. Okay, let's begin by verifying that the source node is set up properly. So I'm going to edit this and what you'll have to do is double check that the source node is looking for the file train.csv where you've placed it. In my case, it's on the desktop so I'm all set. You'll also notice that a couple of the settings have been changed here for you. For instance, I have indicated that this is a comma delimited file. Now of course, QUEST is available in a number of the different environments, but since we're doing this demonstration in Modeler, there are some mechanics that we have to double check. We're going to go inside the type node and remember that the type node is where we're going to…
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