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IBM SPSS Modeler Essentials

You're reading from   IBM SPSS Modeler Essentials Effective techniques for building powerful data mining and predictive analytics solutions

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Product type Paperback
Published in Dec 2017
Publisher Packt
ISBN-13 9781788291118
Length 238 pages
Edition 1st Edition
Concepts
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Authors (2):
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Keith McCormick Keith McCormick
Author Profile Icon Keith McCormick
Keith McCormick
Jesus Salcedo Jesus Salcedo
Author Profile Icon Jesus Salcedo
Jesus Salcedo
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Toc

Data Audit node options


When data is first read into Modeler, it is important to check the data to make sure it was read correctly. Typically, using a Table node can help you get a sense of the data and inform you of some potential issues that you may have. However, the Data Audit node is a better alternative to using a Table node, as it provides a more thorough look at the data.

Before modeling takes place, it is important to see how records are distributed within the fields in the dataset. Knowing this information can identify values that, on the surface, appear to be valid, but when compared to the rest of the data are either out of range or inappropriate. Let's begin by opening a stream that has the modifications we made in the previous chapter:

  1. Open the Data Quality and Exploration stream.

Note

This simple stream contains the Demographic data file that has been linked to the Var. File source, along with the modifications we previously made in the Types tab. In order for this stream to function...

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