Mike WuRichard Lee DavisBenjamin W. DomingueChris PiechNoah D. GoodmanVariational Item Response Theory: Fast, Accurate, and Expressive.2020EDMhttps://educationaldatamining.org/files/conferences/EDM2020/papers/paper_22.pdfconf/edm/2020db/conf/edm/edm2020.html#WuDDPG20