Nope. Not all the images contained faces (cats, bodies, etc.). There was no specific face-detection code. The system just learned the concepts from the data.

Nope. Not all the images contained faces (cats, bodies, etc.). There was no specific face-detection code. The system just learned the concepts from the data. http://en.wikipedia.org/wiki/Unsupervised_learning http://en.wikipedia.org/wiki/Unsupervised_learning