Sujith Ravi is a Director at Amazon. Prior to that he founded and headed multiple ML and NLP teams and efforts at Google. His main research interests span various problems and theory related to the fields of machine learning, large-scale structured prediction and natural language processing (NLP). He won the SIGDIAL 2019 and SIGKDD 2014 Best Research Paper Awards. He is specifically interested in large-scale unsupervised and semi-supervised methods and their applications to structured prediction problems in NLP, information extraction, multi-modal learning for language/vision, user modeling in social media, graph optimization algorithms for summarizing noisy data, computational decipherment and computational advertising.