From the course: Machine Learning and AI: Advanced Decision Trees with SPSS

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Winnowing attributes

Winnowing attributes

From the course: Machine Learning and AI: Advanced Decision Trees with SPSS

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Winnowing attributes

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- [Instructor] Now I'd like to demonstrate a special feature of C5.0 that allows you to identify your most important variables before the tree is built. It's called winnowing attributes. Going to open a stream that I've prepared for you called C5.str stream. A couple of quick things to double check. In the source node you should verify that the data is where the source node expects to find it. You can do that quickly just by clicking on preview. Looks like it's okay. Also if you go into the type node, you'll see that I've declared the level of measurement and the role the way that we need it to be and I've placed a C5 modeling node on the canvas, but I've kept it on default settings. Let's take a look. Winnowing attributes is actually found under the expert settings but the idea behind it is really straight forward. For now we're going to keep it on the default setting which means that it's been turned off. Now I'm going to run the model and I'm going to look at the results. We'll…

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