> khan academy actually had a blog post about how he implemented ML I belive that this might be the article in question: http://david-hu.com/2011/11/02/how-kh

> khan academy actually had a blog post about how he implemented ML I belive that this might be the article in question: http://david-hu.com/2011/11/02/how-khan-academy-is-using-machine-learning-to-assess-student-mastery.html http://david-hu.com/2011/11/02/how-khan-academy-is-using-mac...