I wish that Anki would do some opt-in data gathering and open-source the resulting data. Some really amazing stuff could be done with that! Duolingo open-sourc

I wish that Anki would do some opt-in data gathering and open-source the resulting data. Some really amazing stuff could be done with that! Duolingo open-sourced a data set and a model for learning the best time to present ideas for review; however, the model seems to be extremely limited and I could not get it to work at all. I think the best open source solution here is Ebisu: https://github.com/fasiha/ebisu https://github.com/fasiha/ebisu. It uses a custom statistical model which incorporates the idea of memory half-life, which is supported by learning research.