Let's talk about a few data mining and machine learning techniques that employers expect you to know about. We'll start with a really simple one called KNN for short. You're going to be surprised at just how simple a good supervised machine learning technique can be. Let's take a look!
KNN sounds fancy but it's actually one of the simplest techniques out there! Let's say you have a scatter plot and you can compute the distance between any two points on that scatter plot. Let's assume that you have a bunch of data that you've already classified, that you can train the system from. If I have a new data point, all I do is look at the KNN based on that distance metric and let them all vote on the classification of that new point.
Let's imagine that the following scatter plot is plotting movies. The squares...
