Pretty neat for implementation used as a tutorial. A more industry standard implementation would probably use a tree of some type to reduce the space and search

Pretty neat for implementation used as a tutorial. A more industry standard implementation would probably use a tree of some type to reduce the space and search time. For example https://en.wikipedia.org/wiki/K-d_tree https://en.wikipedia.org/wiki/K-d_tree in http://scikit-learn.org/stable/modules/generated/sklearn.neighbors.KNeighborsClassifier.html http://scikit-learn.org/stable/modules/generated/sklearn.nei...