Personalized Energy Auditor: Estimating personal electricity usage. - Seungwoo Lee; Daye Ahn; Sukjun Lee; Rhan Ha; Hojung Cha (PerCom, 2014)

Non-obstructive room-level locating system in home environments using activity fingerprints from smartwatch. - Seungwoo Lee; Yungeun Kim; Daye Ahn; Rhan Ha; Kyoungwoo Lee; Hojung Cha (UbiComp, 2015)