Exercise

Encoding categorical variables

There are couple of columns in the UFO dataset that need to be encoded before they can be modeled through scikit-learn. You'll do that transformation here, using both binary and one-hot encoding methods.

Instructions

100 XP

Using apply(), write a lambda that returns a 1 if the value is us, else return 0. This is something we learned in Chapter 3 if you need a refresher.
Next, print out the number of unique() values of the type column.
Using pd.get_dummies(), create a one-hot encoded set of the type column.
Finally, use pd.concat() to concatenate the ufo dataset to the type_set encoded variables.