I released this gem late last night and am just excited to share it with people. It's my first own open source project and I'm proud with how the first release has turned out. The logic is based on a website (
http://goodbre.ws/) I wrote last year for my thesis project at school, which was to alter existing collaborative filtering algorithms to work using set math. For a while, I have wanted to strip the logic out into a gem for others to use, but I finally buckled down a few days ago and got to work.