Acknowledgements
The research described here is joint work across many teams at Google Research and Google DeepMind. We are grateful to all our co-authors: CJ Park, Tim Strother, Yong Cheng, Wei-Hung Weng, David Stutz, Nenad Tomasev, David G.T. Barrett, Anil Palepu, Valentin Liévin, Yash Sharma, Roma Ruparel, Abdullah Ahmed, Elahe Vedadi, Kimberly Kanada, Cìan Hughes, Yun Liu, Geoff Brown, Yang Gao, S. Sara Mahdavi, James Manyika, Katherine Chou, Yossi Matias, Kat Chou, Avinatan Hassidim, Dale R. Webster, Pushmeet Kohli, S. M. Ali Eslami, Joëlle Barral, Adam Rodman, Vivek Natarajan, Mike Schaekermann, Tao Tu, Alan Karthikesalingam, and Ryutaro Tanno.