Kei Hiroi

56 papers A 3C 6Journal 3Unranked 43
YearRankTypeTitle / Venue / Authors
2025 — conf
HASCA: 13th International Workshop on Human Activity Sensing Corpus and Applications.
UbiComp Companion
Kazuya Murao, Yu Enokibori, Hristijan Gjoreski, Paula Lago, Tsuyoshi Okita, Pekka Siirtola, Kei Hiroi, Philipp M. Scholl, Mathias Ciliberto, Kenta Urano, Marius Bock
2024 — conf
12th International Workshop on Human Activity Sensing Corpus and Applications (HASCA).
UbiComp Companion
Kazuya Murao, Yu Enokibori, Hristijan Gjoreski, Paula Lago, Tsuyoshi Okita, Pekka Siirtola, Kei Hiroi, Philipp M. Scholl, Mathias Ciliberto, Kenta Urano, Marius Bock
2024 — conf
Demo: Flood Damage CyRealization with an Orchestrator Framework.
PerCom Workshops
Kei Hiroi, Souma Nakagawa, Ryoma Takahashi, Akihito Kohiga, Sho Fukaya, Yoichi Shinoda
2024 — conf
Interactive Disaster Training Scenario Generation System with Large Language Models.
ITDRR
Koki Asami, Kei Hiroi, Michinori Hatayama
2024 — conf
Performance Evaluation of An Orchestrator Framework for Disaster Cyber-Physical System.
ITDRR
Kei Hiroi, Akihito Kohiga, Sho Fukaya, Yoichi Shinoda
2023 — conf
11th International Workshop on Human Activity Sensing Corpus and Applications (HASCA).
UbiComp/ISWC Adjunct
Kazuya Murao, Yu Enokibori, Hristijan Gjoreski, Paula Lago, Tsuyoshi Okita, Pekka Siirtola, Kei Hiroi, Philipp M. Scholl, Mathias Ciliberto, Kenta Urano
2023 — conf
An Orchestrator Framework for IoT-Based Disaster Prevention Simulation.
SENSORS
Kei Hiroi, Akihito Kohiga, Sho Fukaya, Yoichi Shinoda
2023 C conf
Interaction-Based Task Group Scheduling for a Scalable and Real-Time Self-Driving Simulation.
SIMULTECH
Akihito Kohiga, Kei Hiroi, Takumi Kataoka, Sho Fukaya, Yoichi Shinoda
2023 — conf
Performance Evaluation of Flood Level Estimation Method Using State-Space Model with Time-Series Monitoring Data.
ITDRR
Kei Hiroi, Akihito Kohiga, Sho Fukaya, Yoichi Shinoda
2022 — conf
10th International Workshop on Human Activity Sensing Corpus and Applications (HASCA).
UbiComp/ISWC Adjunct
Kazuya Murao, Yu Enokibori, Hristijan Gjoreski, Paula Lago, Tsuyoshi Okita, Pekka Siirtola, Kei Hiroi, Philipp M. Scholl, Mathias Ciliberto, Kenta Urano
2022 — conf
Data Augmentation with Synthesized Damaged Roof Images Generated by GAN.
ISCRAM
Koki Asami, Shono Fujita, Kei Hiroi, Michinori Hatayama
2021 — conf
9th International Workshop on Human Activity Sensing Corpus and Applications (HASCA).
UbiComp/ISWC Adjunct
Kazuya Murao, Yu Enokibori, Hristijan Gjoreski, Paula Lago, Tsuyoshi Okita, Pekka Siirtola, Kei Hiroi, Philipp M. Scholl, Mathias Ciliberto, Kenta Urano
2021 J jnl
An End-to-End BLE Indoor Localization Method Using LSTM.
J. Inf. Process.
Kenta Urano, Kei Hiroi, Takuro Yonezawa, Nobuo Kawaguchi
2020 — conf
8th international workshop on human activity sensing corpus and applications (HASCA).
UbiComp/ISWC Adjunct
Kazuya Murao, Yu Enokibori, Hristijan Gjoreski, Paula Lago, Tsuyoshi Okita, Pekka Siirtola, Kei Hiroi, Philipp M. Scholl, Mathias Ciliberto
2019 — conf
7th international workshop on human activity sensing corpus and applications (HASCA).
UbiComp/ISWC Adjunct
Kazuya Murao, Yu Enokibori, Hristijan Gjoreski, Paula Lago, Tsuyoshi Okita, Pekka Siirtola, Kei Hiroi, Philipp M. Scholl, Mathias Ciliberto
2019 J jnl
A Smartphone 3D Positioning Method using a Spinning Magnet Marker.
J. Inf. Process.
Kosuke Watanabe, Kei Hiroi, Takeshi Kamiyama, Hiroyuki Sano, Masakatsu Tsukamoto, Masaji Katagiri, Daizo Ikeda, Katsuhiko Kaji, Nobuo Kawaguchi
2019 — conf
ARIA: interactive damage prediction system for urban flood using simulation and emulation federation platform.
UbiComp/ISWC Adjunct
Kei Hiroi, Tomoya Inoue, Kunio Akashi, Tsubasa Yumura, Toshiyuki Miyachi, Hayate Hironaka, Hironobu Kanno, Yoichi Shinoda
2019 — conf
An End-to-End BLE Indoor Location Estimation Method Using LSTM.
ICMU
Kenta Urano, Kei Hiroi, Takuro Yonezawa, Nobuo Kawaguchi
2019 — conf
Ballroom dance step type recognition by random forest using video and wearable sensor.
UbiComp/ISWC Adjunct
Hitoshi Matsuyama, Kei Hiroi, Katsuhiko Kaji, Takuro Yonezawa, Nobuo Kawaguchi
2019 A conf
Basic Study of BLE Indoor Localization using LSTM-based Neural Network.
MobiSys
Kenta Urano, Kei Hiroi, Takuro Yonezawa, Nobuo Kawaguchi
2019 A conf
Capturing Subjective Time as Context and It's Applications.
MobiSys
Takuro Yonezawa, Yuuki Nishiyama, Kei Hiroi, Nobuo Kawaguchi
2019 — ch.
Compensation Scheme for PDR Using Component-Wise Error Models.
Human Activity Sensing
Junto Nozaki, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi
2019 — conf
Data Assimilation Approach for Flood Level Estimation using State Space Model for Urban Internal Flooding.
ICT-DM
Kei Hiroi, Daisuke Murakami, Kazumi Kurata, Takashi Tashiro, Yoichi Shinoda
2019 — conf
End-to-end walking speed estimation method for smartphone PDR using DualCNN-LSTM.
IPIN (Short Papers/Work-in-Progress Papers)
Nobuo Kawaguchi, Junto Nozaki, Takuto Yoshida, Kei Hiroi, Takuro Yonezawa, Katsuhiko Kaji
2019 — conf
Flood Area Estimation Using Personal Location Data - Case Study of Japan Floods in 2018.
PerCom Workshops
Kei Hiroi, Takahiro Yoshida, Yoshiki Yamagata, Nobuo Kawaguchi
2019 A conf
Gait Dependency of Smartphone Walking Speed Estimation using Deep Learning.
MobiSys
Takuto Yoshida, Junto Nozaki, Kenta Urano, Kei Hiroi, Takuro Yonezawa, Nobuo Kawaguchi
2019 — conf
Investigation into Feasibility of Data Assimilation Approach for Flood Level Estimation Using Temporal-Spatial State Space Model.
BigComp
Kei Hiroi, Daisuke Murakami, Kazumi Kurata, Takashi Tashiro
2019 C conf
Processing Time and Reproducibility Toward A Real-Time Simulation System for Flood Evacuation.
IGARSS
Kei Hiroi, Masatoshi Enomoto, Tsubasa Yumura, Toshiyuki Miyachi
2019 C conf
Proposing of Software Testing Platform with Federating Simulation and Software Emulation For Route Recommendation System in the Case of Flooding.
IGARSS
Masatoshi Enomoto, Tsubasa Yumura, Kei Hiroi, Toshiyuki Miyachi
2019 — conf
Road Surface Condition Inspection Using a Laser Scanner Mounted on an Autonomous Driving Car.
PerCom Workshops
Kenta Urano, Kei Hiroi, Shinpei Kato, Nozomi Komagata, Nobuo Kawaguchi
2019 — conf
Sampling rate dependency in pedestrian walking speed estimation using DualCNN-LSTM.
UbiComp/ISWC Adjunct
Takuto Yoshida, Junto Nozaki, Kenta Urano, Kei Hiroi, Katsuhiko Kaji, Takuro Yonezawa, Nobuo Kawaguchi
2019 C conf
Verification on Evacuation of Flood Disaster by Using Gps: Case Study in Mabi, Japan 2018.
IGARSS
Takahiro Yoshida, Kei Hiroi, Yoshiki Yamagata, Daisuke Murakami
2018 — conf
6th International Workshop on Human Activity Sensing Corpus and Applications (HASCA).
UbiComp/ISWC Adjunct
Kazuya Murao, Yu Enokibori, Hristijan Gjoreski, Paula Lago, Tsuyoshi Okita, Pekka Siirtola, Kei Hiroi, Philipp M. Scholl
2018 — conf
Activity Recognition Using Dual-ConvLSTM Extracting Local and Global Features for SHL Recognition Challenge.
UbiComp/ISWC Adjunct
Yuta Yuki, Junto Nozaki, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi
2018 — conf
Short Segment Random Forest with Post Processing Using Label Constraint for SHL Recognition Challenge.
UbiComp/ISWC Adjunct
Hitoshi Matsuyama, Kenta Urano, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi
2017 — conf
A location estimation method using mobile BLE tags with tandem scanners.
UbiComp/ISWC Adjunct
Kenta Urano, Katsuhiko Kaji, Kei Hiroi, Nobuo Kawaguchi
2017 — conf
A three-dimensional smartphone positioning method using a spinning magnet marker.
ICMU
Kosuke Watanabe, Kei Hiroi, Takeshi Kamiyama, Hiroyuki Sano, Masakatsu Tsukamoto, Masaji Katagiri, Daizo Ikeda, Katsuhiko Kaji, Nobuo Kawaguchi
2017 — conf
Compensation scheme for PDR using sparse location and error model.
UbiComp/ISWC Adjunct
Junto Nozaki, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi
2017 J jnl
Event.Locky: System of Event-Data Extraction from Webpages based on Web Mining.
J. Inf. Process.
Chenyi Liao, Kei Hiroi, Katsuhiko Kaji, Ken Sakurada, Nobuo Kawaguchi
2016 — conf
A Location Estimation Method using BLE Tags Distributed Among Participants of a Large-Scale Exhibition.
MobiQuitous (Adjunct Proceedings)
Kenta Urano, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi
2016 — conf
A better positioning with BLE tag by RSSI compensation through crowd density estimation.
UbiComp Adjunct
Kei Hiroi, Yoichi Shinoda, Nobuo Kawaguchi
2016 — conf
FloodEye: Real-time flash flood prediction system for urban complex water flow.
IEEE SENSORS
Kei Hiroi, Nobuo Kawaguchi
2016 — conf
HASC-PAC2016: large scale human pedestrian activity corpus and its baseline recognition.
UbiComp Adjunct
Haruyuki Ichino, Katsuhiko Kaji, Ken Sakurada, Kei Hiroi, Nobuo Kawaguchi
2016 — conf
Measurement methods of spatial ability using a virtual reality system.
ICMU
Kosuke Shimada, Kei Hiroi, Nobuo Kawaguchi, Katsuhiko Kaji
2016 C conf
PIEM: Path Independent Evaluation Metric for Relative Localization.
IPIN
Masaaki Abe, Katsuhiko Kaji, Kei Hiroi, Nobuo Kawaguchi
2016 — conf
UbiComp/ISWC 2015 PDR challenge corpus.
UbiComp Adjunct
Katsuhiko Kaji, Masaaki Abe, Weimin Wang, Kei Hiroi, Nobuo Kawaguchi
2016 C conf
Wi-Fi Human Behavior Analysis and BLE Tag Localization: A Case Study at an Underground Shopping Mall.
MobiQuitous
Nobuo Kawaguchi, Kei Hiroi, Atsushi Shionozaki, Masamichi Asukai, Toshimune Nasu, Yu Hashimoto, Takeharu Nakamura, Tetsuya Gotou, Shinsuke Ando
2015 — conf
A pedestrian passage detection method by using spinning magnets on corridors.
UbiComp/ISWC Adjunct
Chihiro Takeshima, Katsuhiko Kaji, Kei Hiroi, Nobuo Kawaguchi, Takeshi Kamiyama, Ken Ohta, Hiroshi Inamura
2015 — conf
A proposal of IndoorGML extended data model for pedestrian-oriented voice navigation system.
ISA@SIGSPATIAL
Hirokazu Iida, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi
2015 — conf
An Event Data Extraction Method Based on HTML Structure Analysis and Machine Learning.
COMPSAC Workshops
Chenyi Liao, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi
2015 — conf
Design and implementation of algorithm for estimation of elevator travel distance using smartphone accelerometer.
UbiComp/ISWC Adjunct
Antonio Martinez, Kei Hiroi, Nobuo Kawaguchi
2015 — conf
Indoor positioning method integrating pedestrian Dead Reckoning with magnetic field and WiFi fingerprints.
ICMU
Ryoji Ban, Katsuhiko Kaji, Kei Hiroi, Nobuo Kawaguchi
2015 — conf
Velobug: a mobile system for 3D indoor mapping.
UbiComp/ISWC Adjunct
Weimin Wang, Kenji Yamakawa, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi
2014 — conf
Design and Implementation of Event Information Summarization System.
COMPSAC Workshops
Chenyi Liao, Katsuhiko Kaji, Kei Hiroi, Nobuo Kawaguchi
2014 — conf
Non-Local Dictionary Based Japanese Dish Names Recognition Using Multi-Feature CRF from Online Reviews.
WIMS
Weichang Chen, Katsuhiko Kaji, Nobuo Kawaguchi, Kei Hiroi
2014 — conf
Pedestrian dead reckoning based on human activity sensing knowledge.
UbiComp Adjunct
Yuya Murata, Kei Hiroi, Katsuhiko Kaji, Nobuo Kawaguchi