How Duolingo's AI Learns what you Need to Learn: The language-learning app tries to emulate a great human tutor

Bicknell, K., Brust, C., & Settles, B. (2023). How Duolingo’s AI Learns what you Need to Learn: The language-learning app tries to emulate a great human tutor. IEEE Spectrum, 60(3), 28–33. https://doi.org/10.1109/MSPEC.2023.10061631