An easy introduction to unsupervised learning with 4 basic techniques

Deep Learning has gotten a lot of love from both the AI community and the general public. But most recently, researchers have started to question and doubt that deep learning is really the future of AI. The prominent deep learning techniques used today all rely on supervised learning, yet we see quite clearly that humans learn things, patterns, and concepts without much supervision at all. In a sense, our learning is quite unsupervised. Unsupervised learning doesn't get as much love and there's a few clear reasons for that.