Progress in the Healthcare Service Innovation Project at the Tsukuba University Hospital. - Hideaki Takagi; Hisashi Kurata; Yukihiko Okada; Maiko Shigeno; Akiko Yoshise; Yongbing Zhang 001; Keizo Yamashita (SRII Global Conference, 2012)

Shopping Baskets for On-line Beacon Sensor Network in Retail Store. - Yuji Suda; Taiga Arai; Takahiro Yoshizawa; Yuki Fujita; Keiichi Zempo; Yukihiko Okada (CCNC, 2019)

Sensor network to measure MAAI on value co-creation process: feasibility study of MAAI optimization on customer service. - Taiga Arai; Yusuke Chida; Yukihiko Okada; Keiichi Zempo (UbiComp/ISWC Adjunct, 2019)

Evaluation of Indoor Positioning System based on Attachable Infrared Beacons in Metal Shelf Environment. - Taiga Arai; Takahiro Yoshizawa; Takuya Aoki; Keiichi Zempo; Yukihiko Okada (ICCE, 2019)

Queueing Analysis of Home Delivery Services with Parcel Lockers. - Shinto Hideyama; Tuan Phung-Duc; Yukihiko Okada (QTNA, 2019)

Real-time reassurance monitoring shopping basket in retail store: poster abstract. - Azusa Yamazaki; Ryo Akatsu; Yukihiko Okada; Keiichi Zempo (SenSys, 2020)

Federated Learning System without Model Sharing through Integration of Dimensional Reduced Data Representations. - Anna Bogdanova; Akie Nakai; Yukihiko Okada; Akira Imakura; Tetsuya Sakurai (CoRR, 2020)

Effects of Audio-Visual Information on Interpersonal Distance in Real and Virtual Environments. - Azusa Yamazaki; Naoto Wakatsuki; Koichi Mizutani; Yukihiko Okada; Keiichi Zempo (INTERACT (5), 2021)

Interpretable collaborative data analysis on distributed data. - Akira Imakura; Hiroaki Inaba; Yukihiko Okada; Tetsuya Sakurai (Expert Syst. Appl., 2021)

Sensing Framework for the Internet of Actors in the Value Co-Creation Process with a Beacon-Attachable Indoor Positioning System. - Keiichi Zempo; Taiga Arai; Takuya Aoki; Yukihiko Okada (Sensors, 2021)

Decentralized Learning with Virtual Patients for Medical Diagnosis of Diabetes. - Yuta Takahashi; Hanten Chang; Akie Nakai; Rina Kagawa; Hiroyasu Ando; Akira Imakura; Yukihiko Okada; Hideo Tsurushima; Kenji Suzuki 002; Tetsuya Sakurai (SN Comput. Sci., 2021)

Predictive model of frailty onset using Bayesian network. - Yujiro Kawai; Eiichi Sakurai; Yuki Sugawara; Yukihiko Okada; Kai Tanabe; Akiko Tsukao; Shinya Kuno (IEEE Big Data, 2022)

Impact on the Quality of Interpersonal Relationships by Proximity using the Ventriloquism Effect in a Virtual Environment. - Azusa Yamazaki; Naoto Wakatsuki; Koichi Mizutani; Yukihiko Okada; Keiichi Zempo (ISS Companion, 2022)

Mouth-in-the-Door: The Effect of a Sound Image of an Avatar Intruding on Personal Space That Deviates in Position From the Visual Image. - Keiichi Zempo; Azusa Yamazaki; Naoto Wakatsuki; Koichi Mizutani; Yukihiko Okada (IEEE Access, 2022)

Application of C-LSTM Networks to Automatic Labeling of Vehicle Dynamic Response Data for Bridges. - Ryota Shin; Yukihiko Okada; Kyosuke Yamamoto (Sensors, 2022)

Effect of Salesperson Avatar Automatically Mimicking Customer's Nodding on the Enjoyment of Conversation in Virtual Environments. - Takumi Wakabayashi; Yukihiko Okada; Keiichi Zempo (AHs, 2023)

Rapport Building via a Digital Avatar with a "Voice" Entering into a Customer's Personal Space. - Azusa Yamazaki; Naoto Wakatsuki; Koichi Mizutani; Yukihiko Okada; Keiichi Zempo (AHs, 2023)

Data-Driven Approaches to Detecting Misdeliveries in Truck Logistics using GPS Data. - Ayumu Hidaka; Ryota Shin; Atsushi Tsuchiya; Norihiko Nakabayashi; Yukihiko Okada; Yohei Shida (IEEE Big Data, 2023)

Does Double-entry Bookkeeping Information Generated Using node2vec Contribute to Forecasting Future Performance? - Ryoki Motai; Masato Kamebuchi; Sora Watanabe; Ryo Matsumoto; Yukihiko Okada (IEEE Big Data, 2023)

Method for creating privacy-preserving information using Probabilistic Latent Semantic Analysis. - Yuki Sugawara; Eiichi Sakurai; Yoichi Motomura; Yukihiko Okada; Kai Tanabe; Akiko Tsukao; Shinya Kuno (IEEE Big Data, 2023)

Effects of symmetrical avatar arm movements on the sense of ownership of both hands inverted in a mirror. - Toko Fujita; Moeki Horii; Luis David Torres Mailleux; Masatatsu Miyagi; Yukihiko Okada; Keiichi Zempo (VRST, 2023)

Effect of voice imitation using voice conversion by avatar on customer service in Virtual Environments. - Hiiro Okano; Yukihiko Okada; Naoto Wakatsuki; Keiichi Zempo (VRST, 2023)

Whispering salesperson: perceptual illusion of interpersonal distance and ventriloquism effect in service of virtual environment by use of whisper voice. - Mizuki Yabutani; Azusa Yamazaki; Naoto Wakatsuki; Yukihiko Okada; Keiichi Zempo (VRST, 2023)

Non-readily identifiable data collaboration analysis for multiple datasets including personal information. - Akira Imakura; Tetsuya Sakurai; Yukihiko Okada; Tomoya Fujii; Teppei Sakamoto; Hiroyuki Abe (Inf. Fusion, 2023)

Discussion on a Vehicle-Bridge Interaction System Identification in a Field Test. - Ryota Shin; Yukihiko Okada; Kyosuke Yamamoto (Sensors, 2023)

Practical Application of Drive-By Monitoring Technology to Road Roughness Estimation Using Buses in Service. - Kyosuke Yamamoto; Ryota Shin; Katsuki Sakuma; Masaaki Ono; Yukihiko Okada (Sensors, 2023)

Another use of SMOTE for interpretable data collaboration analysis. - Akira Imakura; Masateru Kihira; Yukihiko Okada; Tetsuya Sakurai (Expert Syst. Appl., 2023)

An explainable framework based on counterfactual explanations for multi-class financial distress prediction of small and medium enterprises. - Renon Ando; Yuji Kawamata; Toshihiko Takeda; Yukihiko Okada (IEEE Big Data, 2024)

Proposing a Low-Rank Approximation Method with Mathematical Guarantees for High-Dimensional Tensor Data. - Hiroki Hasegawa; Kazuyoshi Yata; Yukihiko Okada; Jun Kunimatsu (IEEE Big Data, 2024)

Practical Experiment of Predicting Cash Flows with LSTM and Double-entry Bookkeeping Data. - Ryoki Motai; Sota Mashiko; Masato Kamebuchi; Sora Watanabe; Ryo Matsumoto; Yukihiko Okada (IEEE Big Data, 2024)

Estimation of conditional average treatment effects on distributed data: A privacy-preserving approach. - Yuji Kawamata; Ryoki Motai; Yukihiko Okada; Akira Imakura; Tetsuya Sakurai (CoRR, 2024)

Collaborative causal inference on distributed data. - Yuji Kawamata; Ryoki Motai; Yukihiko Okada; Akira Imakura; Tetsuya Sakurai (Expert Syst. Appl., 2024)

Estimating Bridge Natural Frequencies Based on Modal Analysis of Vehicle-Bridge Synchronized Vibration Data. - Eugene Mudahemuka; Masatatsu Miyagi; Ryota Shin; Naoki Kaneko; Yukihiko Okada; Kyosuke Yamamoto (Sensors, 2024)

Framework for Emotion Recognition Using Cross-Modal Transformers With Non-Contact Multimodal Signals Aiming Clinical Service Support. - Homura Kawamura; Tomofumi Miura; Yuka Maeda; Yukihiko Okada; Keiichi Zempo (IEEE Access, 2025)

Anomaly Detection in Double-entry Bookkeeping Data by Federated Learning System with Non-model Sharing Approach. - Sota Mashiko; Yuji Kawamata; Tomoru Nakayama; Tetsuya Sakurai; Yukihiko Okada (CoRR, 2025)

Auto Tensor Singular Value Thresholding: A Non-Iterative and Rank-Free Framework for Tensor Denoising. - Hiroki Hasegawa; Yukihiko Okada (CoRR, 2025)

A new type of federated clustering: A non-model-sharing approach. - Yuji Kawamata; Kaoru Kamijo; Masateru Kihira; Akihiro Toyoda; Tomoru Nakayama; Akira Imakura; Tetsuya Sakurai; Yukihiko Okada (CoRR, 2025)

Estimation of conditional average treatment effects on distributed confidential data. - Yuji Kawamata; Ryoki Motai; Yukihiko Okada; Akira Imakura; Tetsuya Sakurai (Expert Syst. Appl., 2026)