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 conditional lambda function that returns a 1 if the value is "us", else return 0.
Print out the number of .unique() values in the type column.
Using pd.get_dummies(), create a one-hot encoded set of the type column.
Finally, use pd.concat() to concatenate the type_set encoded variables to the ufo dataset.