# What is Chapter 8 of Practical Data Science with R?

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Chapter 8 “Advanced Data Preparation” of *Practical Data Science with R* is a study in:

- Using the
`R vtreat`

package for advanced data preparation. - Cross-validated data preparation.

It is the professionally edited, ready to cite version of an important data preparation methodology. An advantage being: a number of well documented result improving transforms are added to your predictive analytic work in one documented step.

We also have a number of free data preparation resources (for both the `R vtreat`

package and the `Python vtreat`

package; notice we believe in cross-language data science tools and practice):

- Free
`R`

video lecture on advanced variable preparation. - Free
`Python`

video lecture on advanced variable preparation. - Task oriented (and cross-linked) examples in
`R`

and`Python`

.

To

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