Mobile Navigation System for the Elderly - Preliminary Experiment and Evaluation. - Takahiro Kawamura; Keisuke Umezu; Akihiko Ohsuga (UIC, 2008)

Context-based Barrier Notification Service Toward Outdoor Support for the Elderly. - Keisuke Umezu; Takahiro Kawamura; Akihiko Ohsuga (CoRR, 2013)

Time-Varying Data Visualization Using Clustered Heatmap and Dual Scatterplots. - Satsuki Kumatani; Takayuki Itoh; Yousuke Motohashi; Keisuke Umezu; Masahiro Takatsuka (IV, 2016)

A Scatterplot-Based Visualization Tool for Regression Analysis. - Chie Suzuki; Takayuki Itoh; Keisuke Umezu; Yousuke Motohashi (IV, 2016)