Koichi Fujiwara

According to our database, Koichi Fujiwara authored at least 49 papers between 1998 and 2024.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2024

Predictive Modeling for Hospital Readmissions for Patients With Heart Disease: An Updated Review From 2012-2023.

Wei Zhang, Weihan Cheng, Koichi Fujiwara, Richard Evans, Chengyan Zhu

IEEE J. Biomed. Health Informatics, April, 2024

Driver Drowsiness Detection Using R-R Interval of Electrocardiogram and Self-Attention Autoencoder.

Koichi Fujiwara, Hiroki Iwamoto, Kentaro Hori, Manabu Kano

IEEE Trans. Intell. Veh., January, 2024

Heat illness detection with heart rate variability analysis and anomaly detection algorithm.

Koichi Fujiwara, Koshi Ota, Shota Saeda, Toshitaka Yamakawa, Takatomi Kubo, Aozora Yamamoto, Yuki Maruno, Manabu Kano

Biomed. Signal Process. Control., January, 2024

2023

Development of an epileptic seizure prediction algorithm using R-R intervals with self-attentive autoencoder.

Rikumo Ode, Koichi Fujiwara, Miho Miyajima, Toshikata Yamakawa, Manabu Kano, Kazutaka Jin, Nobukazu Nakasato, Yasuko Sawai, Toru Hoshida, Masaki Iwasaki, Yoshiko Murata, Satsuki Watanabe, Yutaka Watanabe, Yoko Suzuki, Motoki Inaji, Naoto Kunii, Satoru Oshino, Hui Ming Khoo, Haruhiko Kishima, Taketoshi Maehara

Artif. Life Robotics, May, 2023

Interactive system for optimal position selection of a patch-type R-R interval telemeter.

Aoi Noguchi, Tomoyuki Takano, Koichi Fujiwara, Miho Miyajima, Toshitaka Yamakawa

Artif. Life Robotics, February, 2023

Auditory Feedback of False Heart Rate for Video Game Experience Improvement.

Sayaka Ogawa, Koichi Fujiwara, Manabu Kano

IEEE Trans. Affect. Comput., 2023

Prediction model of postoperative pain exacerbation using an intravenous patient-controlled analgesia device and a wearable electrocardiogram sensor.

Toshiyuki Nakanishi, Koichi Fujiwara, Kazuya Sobue

Proceedings of the 45th Annual International Conference of the IEEE Engineering in Medicine & Biology Society, 2023

Prediction Model of Postoperative Pain Exacerbation Using a Wearable Electrocardiogram Sensor.

Toshiyuki Nakanishi, Koichi Fujiwara, Kazuya Sobue

Proceedings of the Asia Pacific Signal and Information Processing Association Annual Summit and Conference, 2023

Soft-Sensor Construction Method Based on Adaptive Modeling and Transfer Learning for Manufacturing Process Including Maintenance Periods.

Kaito Katayama, Koichi Fujiwara, Kazuki Yamamoto

Proceedings of the Asia Pacific Signal and Information Processing Association Annual Summit and Conference, 2023

2022

Editorial: Data science and digital service delivery in healthcare.

Koichi Fujiwara

Frontiers Comput. Sci., 2022

Medical checkup data analysis method based on LiNGAM and its application to nonalcoholic fatty liver disease.

Tsuyoshi Uchida, Koichi Fujiwara, Kenichi Nishioji, Masao Kobayashi, Manabu Kano, Yuya Seko, Kanji Yamaguchi, Yoshito Itoh, Hiroshi Kadotani

Artif. Intell. Medicine, 2022

2021

Development of Game-Like System Using Active Behavior Input for Wakefulness-Keeping Support in Driving.

Tatsuro Ibe, Koichi Fujiwara, Toshihiro Hiraoka, Erika Abe, Toshitaka Yamakawa

IEEE Trans. Intell. Veh., 2021

Autoencoder-Based Extrasystole Detection and Modification of RRI Data for Precise Heart Rate Variability Analysis.

Koichi Fujiwara, Shota Miyatani, Asuka Goda, Miho Miyajima, Tetsuo Sasano, Manabu Kano

Sensors, 2021

Preliminary Study Using Autoencoder for Early Detection of Heat Illness from Heart Rate Variability Obtained with Wearable Device.

Nao Inatsu, Aoi Noguchi, Koshi Ota, Koichi Fujiwara, Takatomi Kubo, Toshitaka Yamakawa

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2021

2020

Wearable Epileptic Seizure Prediction System with Machine-Learning-Based Anomaly Detection of Heart Rate Variability.

Toshitaka Yamakawa, Miho Miyajima, Koichi Fujiwara, Manabu Kano, Yoko Suzuki, Yutaka Watanabe, Satsuki Watanabe, Tohru Hoshida, Motoki Inaji, Taketoshi Maehara

Sensors, 2020

Regression and independence based variable importance measure.

Xinmin Zhang, Takuya Wada, Koichi Fujiwara, Manabu Kano

Comput. Chem. Eng., 2020

Evaluating Mental State of Drivers in Automated Driving Using Heart Rate Variability towards Feasible Request-to-Intervene.

Felan Carlo C. Garcia, Takatomi Kubo, Chao-Ling Chang, Masafumi Hisada, Takashi Bando, Midori Kato, Masataka Mori, Kazuhito Takenaka, Toshitaka Yamakawa, Koichi Fujiwara, Kazushi Ikeda

Proceedings of the 2020 IEEE International Conference on Systems, Man, and Cybernetics, 2020

2019

Heart Rate Variability-Based Driver Drowsiness Detection and Its Validation With EEG.

Koichi Fujiwara, Erika Abe, Keisuke Kamata, Chikao Nakayama, Yoko Suzuki, Toshitaka Yamakawa, Toshihiro Hiraoka, Manabu Kano, Yukiyoshi Sumi, Fumi Masuda, Masahiro Matsuo, Hiroshi Kadotani

IEEE Trans. Biomed. Eng., 2019

An FPGA Implementation Method based on Distributed-register Architectures.

Koichi Fujiwara, Kazushi Kawamura, Masao Yanagisawa, Nozomu Togawa

IPSJ Trans. Syst. LSI Des. Methodol., 2019

Development of a Sleep Apnea Detection Algorithm Using Long Short-Term Memory and Heart Rate Variability.

Ayako Iwasaki, Chikao Nakayama, Koichi Fujiwara, Yukiyoshi Sumi, Masahiro Matsuo, Manabu Kano, Hiroshi Kadotani

Proceedings of the 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2019

2018

Missing RRI Interpolation Algorithm based on Locally Weighted Partial Least Squares for Precise Heart Rate Variability Analysis.

Keisuke Kamata, Koichi Fujiwara, Takafumi Kinoshita, Manabu Kano

Sensors, 2018

Design of false heart rate feedback system for improving game experience.

Sayaka Ogawa, Koichi Fujiwara, Toshitaka Yamakawa, Erika Abe, Manabu Kano

Proceedings of the IEEE International Conference on Consumer Electronics, 2018

Deniosing Autoencoder-based Modification of RRI data with Premature Ventricular Contraction for Precise Heart Rate Variability Analysis.

Shota Miyatani, Koichi Fujiwara, Manabu Kano

Proceedings of the 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2018

Analysis of VNS Effect on EEG Connectivity with Granger Causality and Graph Theory.

Tsuyoshi Uchida, Koichi Fujiwara, Takao Inoue, Yuichi Maruta, Manabu Kano, Michiyasu Suzuki

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2018

2017

Development of correlation-based process characteristics visualization method and its application to fault detection.

Koichi Fujiwara, Manabu Kano

Proceedings of the 13th IEEE International Conference on Control & Automation, 2017

A new infarction detection method based on heart rate variability in rat middle cerebral artery occlusion model.

Tomonobu Kodata, Keisuke Kamata, Koichi Fujiwara, Manabu Kano, Toshiki Yamakawa, Ichiro Yuki, Yuichi Murayama

Proceedings of the 2017 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2017

Design of focal brain cooling system for suppressing epileptic seizures.

Kei Hata, Koichi Fujiwara, Manabu Kano, Takao Inoue, Sadahiro Nomura, Hirochika Imoto, Michiyasu Suzuki

Proceedings of the 2017 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2017

Causal analysis based on non-time-series kernel Granger causality in a steelmaking process.

Ryosuke Sato, Koichi Fujiwara, Masahiro Tani, Junichi Mori, Junji Ise, Kohhei Harada, Manabu Kano

Proceedings of the 11th Asian Control Conference, 2017

2016

Epileptic Seizure Prediction Based on Multivariate Statistical Process Control of Heart Rate Variability Features.

Koichi Fujiwara, Miho Miyajima, Toshitaka Yamakawa, Erika Abe, Yoko Suzuki, Yuriko Sawada, Manabu Kano, Taketoshi Maehara, Katsuya Ohta, Taeko Sasai-Sakuma, Tetsuo Sasano, Masato Matsuura, Eisuke Matsushima

IEEE Trans. Biomed. Eng., 2016

Interconnection-Delay and Clock-Skew Estimate Modelings for Floorplan-Driven High-Level Synthesis Targeting FPGA Designs.

Koichi Fujiwara, Kazushi Kawamura, Masao Yanagisawa, Nozomu Togawa

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2016

Development of Photoplethysmogram sensor-embedded video game controller.

Erika Abe, Koichi Fujiwara, Manabu Kano, Hiroshi Chigira, Toshitaka Yamakawa

Proceedings of the IEEE International Conference on Consumer Electronics, 2016

Missing RRI interpolation for HRV analysis using locally-weighted partial least squares regression.

Keisuke Kamata, Koichi Fujiwara, Toshiki Yamakawa, Manabu Kano

Proceedings of the 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2016

Canine emotional states assessment with heart rate variability.

Eri Nakahara, Yuki Maruno, Takatomi Kubo, Rina Ouchi, Maki Katayama, Koichi Fujiwara, Miho Nagasawa, Takefumi Kikusui, Kazushi Ikeda

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2016

2015

A Floorplan-Driven High-Level Synthesis Algorithm for Multiplexer Reduction Targeting FPGA Designs.

Koichi Fujiwara, Kazushi Kawamura, Shin-ya Abe, Masao Yanagisawa, Nozomu Togawa

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2015

Development of sleep apnea syndrome screening algorithm by using heart rate variability analysis and support vector machine.

Chikao Nakayama, Koichi Fujiwara, Masahiro Matsuo, Manabu Kano, Hiroshi Kadotani

Proceedings of the 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2015

Clock skew estimate modeling for FPGA high-level synthesis and its application.

Koichi Fujiwara, Kazushi Kawamura, Masao Yanagisawa, Nozomu Togawa

Proceedings of the 2015 IEEE 11th International Conference on ASIC, 2015

Efficient wavenumber selection based on nearest correlation Louvain method for NIR calibration modeling.

Taku Uchimaru, Koji Hazama, Koichi Fujiwara, Manabu Kano

Proceedings of the 10th Asian Control Conference, 2015

Calibration model design based on weighted nearest correlation spectral clustering.

Koichi Fujiwara, Manabu Kano

Proceedings of the 10th Asian Control Conference, 2015

Accuracy comparison between two microcontroller-embedded R-wave detection methods for heart-rate variability analysis.

Toshitaka Yamakawa, Ryunosuke Kinoshita, Koichi Fujiwara, Manabu Kano, Miho Miyajima, Tadashi Sakata, Yuichi Ueda

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2015

Development of stroke detection method by heart rate variability analysis and support vector machine.

Keisuke Kamata, Koichi Fujiwara, Tomonobu Kodama, Manabu Kano, Toshitaka Yamakawa, Norikata Kobayashi, Fuminori Shimizu

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2015

Heart rate monitoring by a pulse sensor embedded game controller.

Erika Abe, Hiroshi Chigira, Koichi Fujiwara, Toshitaka Yamakawa, Manabu Kano

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2015

2014

Real-time heart rate variability monitoring employing a wearable telemeter and a smartphone.

Toshitaka Yamakawa, Koichi Fujiwara, Miho Miyajima, Erika Abe, Manabu Kano, Yuichi Ueda

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2014

Epileptic seizure monitoring by One-Class Support Vector Machine.

Koichi Fujiwara, Erika Abe, Yoko Suzuki, Miho Miyajima, Toshitaka Yamakawa, Manabu Kano, Taketoshi Maehara, Katsuya Ohta, Tetsuo Sasano

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2014

Development of drowsy driving accident prediction by heart rate variability analysis.

Erika Abe, Koichi Fujiwara, Toshihiro Hiraoka, Toshitaka Yamakawa, Manabu Kano

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2014

A floorplan-aware high-level synthesis algorithm for multiplexer reduction targeting FPGA designs.

Koichi Fujiwara, Shin-ya Abe, Kazushi Kawamura, Masao Yanagisawa, Nozomu Togawa

Proceedings of the 2014 IEEE Asia Pacific Conference on Circuits and Systems, 2014

2013

Efficient input variable selection for calibration model design.

Koichi Fujiwara, Manabu Kano

Proceedings of the 9th Asian Control Conference, 2013

Development of a wearable HRV telemetry system to be operated by non-experts in daily life.

Toshitaka Yamakawa, Koichi Fujiwara, Manabu Kano, Miho Miyajima, Yoko Suzuki, Taketoshi Maehara, Katsuya Ohta, Tetsuo Sasano, Masato Matsuura, Eisuke Matsushima

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2013

Heart rate variability features for epilepsy seizure prediction.

Hirotsugu Hashimoto, Koichi Fujiwara, Yoko Suzuki, Miho Miyajima, Toshitaka Yamakawa, Manabu Kano, Taketoshi Maehara, Katsuya Ohta, Tetsuo Sasano, Masato Matsuura, Eisuke Matsushima

Proceedings of the Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2013

1998

A Neural Network Model Based on BP Learning with Stochastic Resonance.

Nobuyuki Matsui, Koichi Fujiwara, Teijiro Isokawa

Proceedings of the Fifth International Conference on Neural Information Processing, 1998