Robot Learns to Smile and Frown (2 of 2) (IMAGE) University of California - San Diego Caption A hyper-realistic Einstein robot at the University of California, San Diego learned to smile and make facial expressions through a process of self-guided learning. The UC San Diego researchers used machine learning to "empower" their robot to learn to make realistic facial expressions. "As far as we know, no other research group has used machine learning to teach a robot to make realistic facial expressions," said Tingfan Wu, computer science Ph.D. student, UC San Diego. Credit UC San Diego Usage Restrictions credit: UC San Diego License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.