About the Authors

Sari Ipponjima

Contributed equally to this work with: Sari Ipponjima, Terumasa Hibi

Affiliations Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, Japan, Graduate School of Information Science and Technology, Hokkaido University, Sapporo, Hokkaido, Japan

Terumasa Hibi

Contributed equally to this work with: Sari Ipponjima, Terumasa Hibi

Affiliation Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, Japan

Tomomi Nemoto

tn@es.hokudai.ac.jp

Affiliations Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, Japan, Graduate School of Information Science and Technology, Hokkaido University, Sapporo, Hokkaido, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: SI TH TN. Formal analysis: SI TH. Funding acquisition: SI TH TN. Investigation: SI TH. Methodology: SI TH. Project administration: TN. Resources: SI TH TN. Supervision: TH TN. Visualization: SI TH. Writing – original draft: SI TH. Writing – review & editing: TH TN.