课程: Advanced Predictive Modeling: Mastering Ensembles and Metamodeling

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Routing cases to different models

Routing cases to different models - SPSS教程

课程: Advanced Predictive Modeling: Mastering Ensembles and Metamodeling

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Routing cases to different models

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- [Instructor] Okay, I want to walk you through a case study of a situation where it makes sense to build two completely different models for two different sub populations of our data. I want to mention briefly that this particular case study is drawn from a book that I authored called the IBM SPSS Modeler Cookbook. If you happen to use this software, you might find it helpful but we're going to go beyond the example in this video. If you don't use Modeler, no knowledge of Modeler's required for this case study. So, let's take a look at data quality in this particular dataset. This is a famous dataset by the way. This is the KDD 98 dataset. One of the things that it's famous for is that it's very messy, lots of missing data, so it's used in a lot of demonstrations. If I click on the Quality tab here, what I actually find is that 0% of the rows are complete. So, I clearly have a missing data problem. The question is what's the nature of my missing data problem and what does this have…

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