Synthetic Design: An Optimization Approach to Experimental Design with Synthetic Controls - Doudchenko, Nick; Khosravi, Khashayar; Pouget-Abadie, Jean; Lahaie, Sébastien; Lubin, Miles; Mirrokni, Vahab; Spiess, Jann; imbens, guido (Advances in Neural Information Processing Systems, 2021)