1. Graduate School of Information Science and Technology, Hokkaido University, Kita-ku, Sapporo, Hokkaido, Japan
2. Education and Research Center for Mathematical and Data Science, Hokkaido University, Kita-ku, Sapporo, Hokkaido, Japan
3. Center for Human Nature, Artificial Intelligence, and Neuroscience (CHAIN), Hokkaido University, Kita-ku, Sapporo, Hokkaido, Japan