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  1. Article

    Open Access

    Predicting partially observed processes on temporal networks by Dynamics-Aware Node Embeddings (DyANE)

    Low-dimensional vector representations of network nodes have proven successful to feed graph data to machine learning algorithms and to improve performance across diverse tasks. Most of the embedding technique...

    Koya Sato, Mizuki Oka, Alain Barrat, Ciro Cattuto in EPJ Data Science (2021)

  2. No Access

    Chapter and Conference Paper

    Early Turnover Prediction of New Restaurant Employees from Their Attendance Records and Attributes

    It is widely known that the turnover rate of new employees is high....

    Koya Sato, Mizuki Oka, Kazuhiko Kato in Database and Expert Systems Applications (2019)

  3. No Access

    Chapter and Conference Paper

    Early Churn User Classification in Social Networking Service Using Attention-Based Long Short-Term Memory

    Social networking services (SNSs) see much early churn of new users. SNSs can provide effective interventions by identifying potential early churn users and important factors leading to early churn. The long s...

    Koya Sato, Mizuki Oka, Kazuhiko Kato in Trends and Applications in Knowledge Disco… (2019)

  4. No Access

    Reference Work Entry In depth

    Spectrum Database and Smart Spectrum

    In this chapter, spectrum management technologies based on a spectrum database are introduced. Statistical spectrum maps and spectrum databases are important components for understanding a spectrum environment...

    Takeo Fujii, Kei Inage, Koya Sato in Handbook of Cognitive Radio (2019)

  5. No Access

    Chapter and Conference Paper

    Haptic Directional Instruction System for Sports

    We proposed a new haptic instruction system for sports trainings that provides field players with instructed directions. The system consists of a stimulation unit (SU) for a player and an instruction unit (IU)...

    Ryoichiro Shiraishi, Koya Sato, Yuji Sano, Mai Otsuki in Haptic Interaction (2018)

  6. No Access

    Living Reference Work Entry In depth

    Spectrum Database and Smart Spectrum

    In this chapter, spectrum management technologies based on a spectrum database are introduced. Statistical spectrum maps and spectrum databases are important components for understanding a spectrum environment...

    Takeo Fujii, Kei Inage, Koya Sato in Handbook of Cognitive Radio