Khatri, Chandra, Anu Venkatesh, Behnam Hedayatnia, Raefer Gabriel, Ashwin Ram, and Rohit Prasad. 2018. “Alexa Prize — State of the Art in Conversational AI”. AI Magazine 39 (3):40-55. https://doi.org/10.1609/aimag.v39i3.2810.