Kei Hiroi

According to our database, Kei Hiroi authored at least 52 papers between 2014 and 2024.

Collaborative distances:

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

2024

Demo: Flood Damage CyRealization with an Orchestrator Framework.

Kei Hiroi, Souma Nakagawa, Ryoma Takahashi, Akihito Kohiga, Sho Fukaya, Yoichi Shinoda

Proceedings of the IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events, 2024

2023

Interaction-Based Task Group Scheduling for a Scalable and Real-Time Self-Driving Simulation.

Akihito Kohiga, Kei Hiroi, Takumi Kataoka, Sho Fukaya, Yoichi Shinoda

Proceedings of the 13th International Conference on Simulation and Modeling Methodologies, 2023

Performance Evaluation of Flood Level Estimation Method Using State-Space Model with Time-Series Monitoring Data.

Kei Hiroi, Akihito Kohiga, Sho Fukaya, Yoichi Shinoda

Proceedings of the Information Technology in Disaster Risk Reduction, 2023

An Orchestrator Framework for IoT-Based Disaster Prevention Simulation.

Kei Hiroi, Akihito Kohiga, Sho Fukaya, Yoichi Shinoda

Proceedings of the 2023 IEEE SENSORS, Vienna, Austria, October 29 - Nov. 1, 2023, 2023

11th International Workshop on Human Activity Sensing Corpus and Applications (HASCA).

Kazuya Murao, Yu Enokibori, Hristijan Gjoreski, Paula Lago, Tsuyoshi Okita, Pekka Siirtola, Kei Hiroi, Philipp M. Scholl, Mathias Ciliberto, Kenta Urano

Proceedings of the Adjunct Proceedings of the 2023 ACM International Joint Conference on Pervasive and Ubiquitous Computing & the 2023 ACM International Symposium on Wearable Computing, 2023

2022

Data Augmentation with Synthesized Damaged Roof Images Generated by GAN.

Koki Asami, Shono Fujita, Kei Hiroi, Michinori Hatayama

Proceedings of the 19th International Conference on Information Systems for Crisis Response and Management, 2022

10th International Workshop on Human Activity Sensing Corpus and Applications (HASCA).

Kazuya Murao, Yu Enokibori, Hristijan Gjoreski, Paula Lago, Tsuyoshi Okita, Pekka Siirtola, Kei Hiroi, Philipp M. Scholl, Mathias Ciliberto, Kenta Urano

Proceedings of the Adjunct Proceedings of the 2022 ACM International Joint Conference on Pervasive and Ubiquitous Computing and the 2022 ACM International Symposium on Wearable Computers, 2022

2021

An End-to-End BLE Indoor Localization Method Using LSTM.

Kenta Urano, Kei Hiroi, Takuro Yonezawa, Nobuo Kawaguchi

J. Inf. Process., 2021

9th International Workshop on Human Activity Sensing Corpus and Applications (HASCA).

Kazuya Murao, Yu Enokibori, Hristijan Gjoreski, Paula Lago, Tsuyoshi Okita, Pekka Siirtola, Kei Hiroi, Philipp M. Scholl, Mathias Ciliberto, Kenta Urano

Proceedings of the UbiComp/ISWC '21: 2021 ACM International Joint Conference on Pervasive and Ubiquitous Computing and 2021 ACM International Symposium on Wearable Computers, 2021

2020

8th international workshop on human activity sensing corpus and applications (HASCA).

Kazuya Murao, Yu Enokibori, Hristijan Gjoreski, Paula Lago, Tsuyoshi Okita, Pekka Siirtola, Kei Hiroi, Philipp M. Scholl, Mathias Ciliberto

Proceedings of the UbiComp/ISWC '20: 2020 ACM International Joint Conference on Pervasive and Ubiquitous Computing and 2020 ACM International Symposium on Wearable Computers, 2020

2019

A Smartphone 3D Positioning Method using a Spinning Magnet Marker.

Kosuke Watanabe, Kei Hiroi, Takeshi Kamiyama, Hiroyuki Sano, Masakatsu Tsukamoto, Masaji Katagiri, Daizo Ikeda, Katsuhiko Kaji, Nobuo Kawaguchi

J. Inf. Process., 2019

Road Surface Condition Inspection Using a Laser Scanner Mounted on an Autonomous Driving Car.

Kenta Urano, Kei Hiroi, Shinpei Kato, Nozomi Komagata, Nobuo Kawaguchi

Proceedings of the IEEE International Conference on Pervasive Computing and Communications Workshops, 2019

Flood Area Estimation Using Personal Location Data - Case Study of Japan Floods in 2018.

Kei Hiroi, Takahiro Yoshida, Yoshiki Yamagata, Nobuo Kawaguchi

Proceedings of the IEEE International Conference on Pervasive Computing and Communications Workshops, 2019

Gait Dependency of Smartphone Walking Speed Estimation using Deep Learning.

Takuto Yoshida, Junto Nozaki, Kenta Urano, Kei Hiroi, Takuro Yonezawa, Nobuo Kawaguchi

Proceedings of the 17th Annual International Conference on Mobile Systems, 2019

Capturing Subjective Time as Context and It's Applications.

Takuro Yonezawa, Yuuki Nishiyama, Kei Hiroi, Nobuo Kawaguchi

Proceedings of the 17th Annual International Conference on Mobile Systems, 2019

Basic Study of BLE Indoor Localization using LSTM-based Neural Network.

Kenta Urano, Kei Hiroi, Takuro Yonezawa, Nobuo Kawaguchi

Proceedings of the 17th Annual International Conference on Mobile Systems, 2019

End-to-end walking speed estimation method for smartphone PDR using DualCNN-LSTM.

Nobuo Kawaguchi, Junto Nozaki, Takuto Yoshida, Kei Hiroi, Takuro Yonezawa, Katsuhiko Kaji

Proceedings of the Short Paper Proceedings of the Tenth International Conference on Indoor Positioning and Indoor Navigation - Work-in-Progress Papers (IPIN-WiP 2019) co-located with the Tenth International Conference on Indoor Positioning and Indoor Navigation (IPIN 2019), Pisa, Italy, September 30th, 2019

Verification on Evacuation of Flood Disaster by Using Gps: Case Study in Mabi, Japan 2018.

Takahiro Yoshida, Kei Hiroi, Yoshiki Yamagata, Daisuke Murakami

Proceedings of the 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019

Processing Time and Reproducibility Toward A Real-Time Simulation System for Flood Evacuation.

Kei Hiroi, Masatoshi Enomoto, Tsubasa Yumura, Toshiyuki Miyachi

Proceedings of the 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019

Proposing of Software Testing Platform with Federating Simulation and Software Emulation For Route Recommendation System in the Case of Flooding.

Masatoshi Enomoto, Tsubasa Yumura, Kei Hiroi, Toshiyuki Miyachi

Proceedings of the 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019

Data Assimilation Approach for Flood Level Estimation using State Space Model for Urban Internal Flooding.

Kei Hiroi, Daisuke Murakami, Kazumi Kurata, Takashi Tashiro, Yoichi Shinoda

Proceedings of the 5th International Conference on Information and Communication Technologies for Disaster Management, 2019

An End-to-End BLE Indoor Location Estimation Method Using LSTM.

Kenta Urano, Kei Hiroi, Takuro Yonezawa, Nobuo Kawaguchi

Proceedings of the Twelfth International Conference on Mobile Computing and Ubiquitous Network, 2019

Sampling rate dependency in pedestrian walking speed estimation using DualCNN-LSTM.

Takuto Yoshida, Junto Nozaki, Kenta Urano, Kei Hiroi, Katsuhiko Kaji, Takuro Yonezawa, Nobuo Kawaguchi

Proceedings of the 2019 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2019 ACM International Symposium on Wearable Computers, 2019

7th international workshop on human activity sensing corpus and applications (HASCA).

Kazuya Murao, Yu Enokibori, Hristijan Gjoreski, Paula Lago, Tsuyoshi Okita, Pekka Siirtola, Kei Hiroi, Philipp M. Scholl, Mathias Ciliberto

Proceedings of the 2019 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2019 ACM International Symposium on Wearable Computers, 2019

Ballroom dance step type recognition by random forest using video and wearable sensor.

Hitoshi Matsuyama, Kei Hiroi, Katsuhiko Kaji, Takuro Yonezawa, Nobuo Kawaguchi

Proceedings of the 2019 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2019 ACM International Symposium on Wearable Computers, 2019

ARIA: interactive damage prediction system for urban flood using simulation and emulation federation platform.

Kei Hiroi, Tomoya Inoue, Kunio Akashi, Tsubasa Yumura, Toshiyuki Miyachi, Hayate Hironaka, Hironobu Kanno, Yoichi Shinoda

Proceedings of the 2019 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2019 ACM International Symposium on Wearable Computers, 2019

Investigation into Feasibility of Data Assimilation Approach for Flood Level Estimation Using Temporal-Spatial State Space Model.

Kei Hiroi, Daisuke Murakami, Kazumi Kurata, Takashi Tashiro

Proceedings of the IEEE International Conference on Big Data and Smart Computing, 2019

Compensation Scheme for PDR Using Component-Wise Error Models.

Junto Nozaki, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the Human Activity Sensing - Corpus and Applications, 2019

2018

Activity Recognition Using Dual-ConvLSTM Extracting Local and Global Features for SHL Recognition Challenge.

Yuta Yuki, Junto Nozaki, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the 2018 ACM International Joint Conference and 2018 International Symposium on Pervasive and Ubiquitous Computing and Wearable Computers, 2018

6th International Workshop on Human Activity Sensing Corpus and Applications (HASCA).

Kazuya Murao, Yu Enokibori, Hristijan Gjoreski, Paula Lago, Tsuyoshi Okita, Pekka Siirtola, Kei Hiroi, Philipp M. Scholl

Proceedings of the 2018 ACM International Joint Conference and 2018 International Symposium on Pervasive and Ubiquitous Computing and Wearable Computers, 2018

Short Segment Random Forest with Post Processing Using Label Constraint for SHL Recognition Challenge.

Hitoshi Matsuyama, Kenta Urano, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the 2018 ACM International Joint Conference and 2018 International Symposium on Pervasive and Ubiquitous Computing and Wearable Computers, 2018

2017

Event.Locky: System of Event-Data Extraction from Webpages based on Web Mining.

Chenyi Liao, Kei Hiroi, Katsuhiko Kaji, Ken Sakurada, Nobuo Kawaguchi

J. Inf. Process., 2017

A three-dimensional smartphone positioning method using a spinning magnet marker.

Kosuke Watanabe, Kei Hiroi, Takeshi Kamiyama, Hiroyuki Sano, Masakatsu Tsukamoto, Masaji Katagiri, Daizo Ikeda, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the Tenth International Conference on Mobile Computing and Ubiquitous Network, 2017

A location estimation method using mobile BLE tags with tandem scanners.

Kenta Urano, Katsuhiko Kaji, Kei Hiroi, Nobuo Kawaguchi

Proceedings of the Adjunct Proceedings of the 2017 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2017 ACM International Symposium on Wearable Computers, 2017

Compensation scheme for PDR using sparse location and error model.

Junto Nozaki, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the Adjunct Proceedings of the 2017 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2017 ACM International Symposium on Wearable Computers, 2017

2016

A Location Estimation Method using BLE Tags Distributed Among Participants of a Large-Scale Exhibition.

Kenta Urano, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the Adjunct Proceedings of the 13th International Conference on Mobile and Ubiquitous Systems: Computing Networking and Services, 2016

Wi-Fi Human Behavior Analysis and BLE Tag Localization: A Case Study at an Underground Shopping Mall.

Nobuo Kawaguchi, Kei Hiroi, Atsushi Shionozaki, Masamichi Asukai, Toshimune Nasu, Yu Hashimoto, Takeharu Nakamura, Tetsuya Gotou, Shinsuke Ando

Proceedings of the 13th International Conference on Mobile and Ubiquitous Systems: Computing, 2016

PIEM: Path Independent Evaluation Metric for Relative Localization.

Masaaki Abe, Katsuhiko Kaji, Kei Hiroi, Nobuo Kawaguchi

Proceedings of the International Conference on Indoor Positioning and Indoor Navigation, 2016

FloodEye: Real-time flash flood prediction system for urban complex water flow.

Kei Hiroi, Nobuo Kawaguchi

Proceedings of the 2016 IEEE SENSORS, Orlando, FL, USA, October 30 - November 3, 2016, 2016

Measurement methods of spatial ability using a virtual reality system.

Kosuke Shimada, Kei Hiroi, Nobuo Kawaguchi, Katsuhiko Kaji

Proceedings of the Ninth International Conference on Mobile Computing and Ubiquitous Networking, 2016

UbiComp/ISWC 2015 PDR challenge corpus.

Katsuhiko Kaji, Masaaki Abe, Weimin Wang, Kei Hiroi, Nobuo Kawaguchi

Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2016 ACM International Symposium on Wearable Computers, 2016

HASC-PAC2016: large scale human pedestrian activity corpus and its baseline recognition.

Haruyuki Ichino, Katsuhiko Kaji, Ken Sakurada, Kei Hiroi, Nobuo Kawaguchi

Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2016 ACM International Symposium on Wearable Computers, 2016

A better positioning with BLE tag by RSSI compensation through crowd density estimation.

Kei Hiroi, Yoichi Shinoda, Nobuo Kawaguchi

Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2016 ACM International Symposium on Wearable Computers, 2016

2015

Indoor positioning method integrating pedestrian Dead Reckoning with magnetic field and WiFi fingerprints.

Ryoji Ban, Katsuhiko Kaji, Kei Hiroi, Nobuo Kawaguchi

Proceedings of the Eighth International Conference on Mobile Computing and Ubiquitous Networking, 2015

Velobug: a mobile system for 3D indoor mapping.

Weimin Wang, Kenji Yamakawa, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2015 ACM International Symposium on Wearable Computers, 2015

A pedestrian passage detection method by using spinning magnets on corridors.

Chihiro Takeshima, Katsuhiko Kaji, Kei Hiroi, Nobuo Kawaguchi, Takeshi Kamiyama, Ken Ohta, Hiroshi Inamura

Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2015 ACM International Symposium on Wearable Computers, 2015

Design and implementation of algorithm for estimation of elevator travel distance using smartphone accelerometer.

Antonio Martinez, Kei Hiroi, Nobuo Kawaguchi

Proceedings of the 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2015 ACM International Symposium on Wearable Computers, 2015

A proposal of IndoorGML extended data model for pedestrian-oriented voice navigation system.

Hirokazu Iida, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the Seventh ACM SIGSPATIAL International Workshop on Indoor Spatial Awareness, 2015

An Event Data Extraction Method Based on HTML Structure Analysis and Machine Learning.

Chenyi Liao, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the 39th Annual Computer Software and Applications Conference, 2015

2014

Non-Local Dictionary Based Japanese Dish Names Recognition Using Multi-Feature CRF from Online Reviews.

Weichang Chen, Katsuhiko Kaji, Nobuo Kawaguchi, Kei Hiroi

Proceedings of the 4th International Conference on Web Intelligence, 2014

Pedestrian dead reckoning based on human activity sensing knowledge.

Yuya Murata, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi

Proceedings of the 2014 ACM International Joint Conference on Pervasive and Ubiquitous Computing, 2014

Design and Implementation of Event Information Summarization System.

Chenyi Liao, Katsuhiko Kaji, Kei Hiroi, Nobuo Kawaguchi

Proceedings of the IEEE 38th Annual Computer Software and Applications Conference, 2014