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Practical Predictive Analytics
book

Practical Predictive Analytics

by Ralph Winters
June 2017
Beginner to intermediate content levelBeginner to intermediate
576 pages
15h 22m
English
Packt Publishing
Content preview from Practical Predictive Analytics

Examining the metadata

After reading in any file, it is always a good practice to verify the number of rows, and look at the metadata after a dataframe is created. We can do that easily with the str() function. The str() function is an incredibly useful function that is packed with a lot of the type of metadata information that we discussed in Chapter 2, The Modeling Process. It is always a good idea to run the str() function every time you read, merge, join, or create a new file:

str(member)str(purchases)str(purchases_filtered) 

If you switch over to the console, you can see that both member and purchases have 1,000 rows, and the purchases_filtered ...

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Publisher Resources

ISBN: 9781785886188Supplemental Content