1. Department of Mathematics, Faculty of Economics and the International Laboratory of Decision Choice and Analysis, The National Research University Higher School of Economics, Moscow, Russia
2. Institute for Data, Systems, and Society, Massachusetts Institute of Technology, Cambridge, MA, USA
3. Doctoral School of Computer Science and the International Laboratory of Decision Choice and Analysis, The National Research University Higher School of Economics, Boston Consulting Group, Moscow, Russia
4. Faculty of Operations Research and Financial Engineering, Princeton University, Princeton, NJ, USA