Machine Learning Based Skill-Level Classification for Personal Mobility Devices Using Only Operational Characteristics. - Yifan Huang; Taiga Mori; Udara E. Manawadu; Mitsuhiro Kamezaki; Tatsuya Ishihara; Masahiro Nakano; Kohjun Koshiji; Naoki Higo; Toshimitsu Tubaki; Shigeki Sugano (IROS, 2018)