I liked "Programming Collective Intelligence," as it fairly clearly introduces how the algorithms operate by implementing them from scratch. I found the coding

I liked "Programming Collective Intelligence," as it fairly clearly introduces how the algorithms operate by implementing them from scratch. I found the coding style a bit non-pythonic, though (two space indentation?), and in practice you'd be better served using one of the many ML libraries (e.g., scikit-learn [1]), which aren't introduced. [1] http://scikit-learn.org/stable/index.html http://scikit-learn.org/stable/index.html