Missing Data Imputation Using Regression Tree Model for Sparse Data Collected via Wide Area Ubiquitous Network. - Yuka Higashijima; Atsushi Yamamoto; Takayuki Nakamura; Motonori Nakamura; Masato Matsuo (SAINT, 2010)

Proposal of Web Framework for Ubiquitous Sensor Network and Its Trial Application Using NO2 Sensor Mounted on Bicycle. - Takayuki Nakamura; Yukio Kikuya; Yutaka Arakawa; Motonori Nakamura; Yuka Higashijima; Yasuko Yamada Maruo; Masayuki Nakamura (SAINT, 2012)