The three AI models that comprise the solution were a laugh detector, a shared laughter predictor, and a laugh type selector. Each of these models was trained using data from a human-robot speed dating conversation database. The scientists used data from over 80 speed dating dialogues between Kyoto University male students and a remote control robot called ERICA teleoperated by one of four amateur actresses who were in a different room while communicating through the android’s speaker. ERICA is also capable of non-verbal communication such as eye gaze, gestures, and nodding the head. The participants tried to get to know...