1. Institute of Physics and of Mathematics, Komi Science Center of Ural Branch of RAS, 167982 Syktyvkar, Russia
2. Faculty of Computer Science, HSE University, 109028 Moscow, Russia
3. Faculty of Computational Mathematics and Cybernetics, Lomonosov Moscow State University, 119991 Moscow, Russia
4. Institute for Financial Studies, Shandong University, Jinan 250100, China