A Framework for Combining Lateral and Longitudinal Acceleration to Assess Driving Styles Using Unsupervised Approach. - Yuanfang Zhu; Meilan Jiang; Toshiyuki Yamamoto; Naikan Ding; Hiroko Shinkai; Hirofumi Aoki; Kan Shimazaki (IEEE Trans. Intell. Transp. Syst., 2024)