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  3. Feature Engineering in R

Exercise

Into the matrix

You identified six distinct values for EducationField. But you suspect that others might show up as you run the model on new data. To prepare for this, you will create a hash index with 50 terms. The textrecipes package, the attrition_train, and the attrition_test splits are already loaded.

Instructions

100 XP
  • Add a step to the recipe that generates a dummy_hash index for EducationField.
  • Prepare the recipe.
  • Bake the prepared recipe.
  • Bind the baked recipe table and the EducationField values into one table and print the first 7 rows, as well as columns 1 and 18 to 20.