Exercises

1. Bayes' theorem is not only useful for the Naive Bayes algorithm, but is also used for other purposes. Find two more algorithms where Bayes' theorem is applied, and explain how they are different to the Naive Bayes algorithm.
2. In this chapter, we presented an example of a binary classifier. Based on our code to download tweets, create a new dataset where you download tweets from five different sources and build a Naive Bayes model that can predict the source of each tweet. 
3. Identify scenarios for when you would use scikit-learn, Apache Spark, or SageMaker services for a particular problem.