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Re:Facebook Still Tracks People on Yelp, Duolingo, Indeed by reaperducer on Wednesday March 06, 2019 @01:27PM (#19321250)
That app have no lesson, nothing is explained, there is just quizzes slapped on your face until you remember the good answer.

Sounds like machine learning just met machine teaching.

Re:Facebook Still Tracks People on Yelp, Duolingo, Indeed by howard941 on Wednesday March 06, 2019 @02:52PM (#19322123)
Reminiscent of programmed learning https://en.wikipedia.org/wiki/Programmed_learning