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Author

Keiichi Ochiai

Observed name: Keichii Ochai
ORCID: 0000-0001-8344-0551
Observed ORCID: 0000-0001-8344-0551
OpenAlex ID: A5109472441
Physiological Stress Level Estimation Based on Smartphone Logs
2018 · Naoki Yamamoto, Keiichi Ochiai, et al. · International Conference on Mobile Computing and Ubiquitous Network (ICMU) · 18
Smartphone-based Mental State Estimation: A Survey from a Machine Learning Perspective
2020 · Yusuke Fukazawa, Naoki Yamamoto, et al. · Journal of Information Processing · 13
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Real-time On-Device Troubleshooting Recommendation for Smartphones
2019 · Keiichi Ochiai, Kohei Senkawa, et al. · ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD) · 9
Generic POI recommendation
2020 · Hisao Katsumi, Wataru Yamada, et al. · ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp) · 7
Cross-city-aware Spatiotemporal BERT
2024 · Meisaku Suzuki, Yusuke Fukushima, et al. · 6
Exploiting Graph Convolutional Networks for Representation Learning of Mobile App Usage
2019 · Keiichi Ochiai, Naoki Yamamoto, et al. · IEEE International Conference on Big Data (BigData) · 6
Local App Classification using Deep Neural Network based on Mobile App Market Data
2019 · Keiichi Ochiai, Fatina Putri, et al. · IEEE International Conference on Pervasive Computing and Communications · 6
Bicode: A Hybrid Blinking Marker System for Event Cameras
2024 · Takuya Kitade, Wataru Yamada, et al. · Proceedings - IEEE International Conference on Robotics and Automation/Proceedings · 4
Anywhere Hoop: Virtual Free Throw Training System
2022 · Masayasu Sumiya, Wataru Yamada, et al. · ACM Symposium on User Interface Software and Technology (UIST) · 4
Estimating Work Engagement from Online Chat Logs
2021 · Hiroaki Tanaka, Wataru Yamada, et al. · Asian CHI Symposium · 4
CamTrackPoint: pointing stick for mobile device using rear camera
2017 · Wataru Yamada, Hiroyuki Manabe, et al. · ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp) · 4
Extracting local event information from micro-blogs for trip planning
2015 · Wataru Yamada, Daisuke Torii, et al. · International Conference on Mobile Computing and Ubiquitous Network (ICMU) · 4
Estimating work engagement from online chat tools
2024 · Hiroaki Tanaka, Wataru Yamada, et al. · EPJ Data Science · 3
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Detection of non-designated shelters by extracting population concentrated areas after a disaster (industrial paper)
2022 · Keiichi Ochiai, Masayuki Terada, et al. · ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL GIS) · 3
Content-based Stock Recommendation Using Smartphone Data
2022 · Kohsuke Kubota, Hiroyuki Sato, et al. · Journal of Information Processing · 3
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Gonio-spectral based digital archiving and reproduction system for electronic museum
2006 · Keiichi Ochiai, Norimichi Tsumura, et al. · ACM SIGGRAPH Posters · 3
Detection of Non-Designated Evacuation Shelters from Real-Time Population Dynamics Using Autoencoder-Based Anomaly Detection
2024 · Keiichi Ochiai, Masayuki Terada, et al. · ACM Transactions on Spatial Algorithms and Systems · 2
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Stay Ahead of the Competition: An Approach for Churn Prediction by Leveraging Competitive Service App Usage Logs
2023 · Hisao Katsumi, Kohsuke Kubota, et al. · ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp) · 2
Janus Screen: Screen with Switchable Projection Surfaces Using Wire Grid Polarizer
2022 · Wataru Yamada, Sawa Korogi, et al. · CHI Conference on Human Factors in Computing Systems · 2
Disaster Damage Estimation from Real-time Population Dynamics using Graph Convolutional Network (Industrial Paper)
2021 · Keiichi Ochiai, Hiroto Akatsuka, et al. · ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL GIS) · 2
C-LIME: A Consistency-Oriented LIME for Time-Series Health-Risk Predictions
2021 · Taku Ito, Keiichi Ochiai, et al. · Lecture notes in computer science · 2
Automated inference of cognitive performance by fusing multimodal information acquired by smartphone
2019 · Takashi Hamatani, Keiichi Ochiai, et al. · ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp) · 2
Recognizing whether a person is eating alone or has company by using wearable devices
2017 · Kazuki Kiriu, Keiichi Ochiai, et al. · International Conference on Mobile Computing and Ubiquitous Network (ICMU) · 2
Multi-label categorizing local event information from micro-blogs
2016 · Wataru Yamada, Haruka Kikuchi, et al. · International Conference on Mobile Computing and Ubiquitous Network (ICMU) · 2
Poster: End-to-End Privacy-Preserving Vertical Federated Learning using Private Cross-Organizational Data Collaboration
2024 · Keiichi Ochiai, Masayuki Terada · ACM SIGSAC Conference on Computer and Communications Security (CCS) · 1
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Works count: 47
Citation count: 120
H-index: 6
I10-index: 2
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