Artificial Intelligence for Semantic Understanding. - Toshiyuki Iida; Shigeo Shimada; Masakatsu Ohta; Tsukasa Kawaoka (IFIP Congress (2), 1994)

Opinion Transition Model Under Dynamic Environment: Experiment in Introducing Personality to Knowledge-Based Systems. - Masakatsu Ohta; Toshiyuki Iida; Tsukasa Kawaoka (IEA/AIE, 1995)

Strategy Diffusion in Autonomous Agent Systems: Detecting Key Agents for Wide Range Consensus. - Masakatsu Ohta; Toshiyuki Iida (Agents, 1997)

A Visualization Method of Time Expressions using Starting/Ending Point Plane. - Mitsunori Matsushita; Masakatsu Ohta; Toshiyuki Iida (TIME, 1998)

LooM: An Anonymity Quantification Method in Pervasive Computing Environments. - Miyuki Imada; Masakatsu Ohta; Masayasu Yamaguchi (AINA (2), 2006)

Extended Another Memory: Understanding Everyday Lives in Ubiquitous Sensor Environments. - Masakatsu Ohta; Sun Yong Kim; Miyuki Imada (IEA/AIE, 2006)

Detecting Anomalous Events in Ubiquitous Sensor Environments using Bayesian Networks and Nonparametric Regression. - Sun Yong Kim; Miyuki Imada; Masakatsu Ohta (AINA, 2007)

A Flexible Personal Data Disclosure Method Based on Anonymity Quantification. - Miyuki Imada; Masakatsu Ohta; Mitsuo Teramoto; Masayasu Yamaguchi (IEICE Trans. Commun., 2007)

LooM: An anonymity quantification method in pervasive computing environments. - Miyuki Imada; Masakatsu Ohta; Masayasu Yamaguchi; Sun Yong Kim (Int. J. Pervasive Comput. Commun., 2008)

Non-negative Matrix Factorization for Inferring Implicit Preference of Potential Customer. - Masakatsu Ohta (CIT, 2010)

Spatiotemporal Analysis of Rambling Activities: Approach to Inferring Visitor Satisfaction. - Masakatsu Ohta; Yuta Watanabe; Toshiaki Miyazaki (ENTER, 2015)