Design and Implementation of Event Information Summarization System. - Chenyi Liao; Katsuhiko Kaji; Kei Hiroi; Nobuo Kawaguchi (COMPSAC Workshops, 2014)

Pedestrian dead reckoning based on human activity sensing knowledge. - Yuya Murata; Kei Hiroi; Katsuhiko Kaji; Nobuo Kawaguchi (UbiComp Adjunct, 2014)

Non-Local Dictionary Based Japanese Dish Names Recognition Using Multi-Feature CRF from Online Reviews. - Weichang Chen; Katsuhiko Kaji; Nobuo Kawaguchi; Kei Hiroi (WIMS, 2014)

An Event Data Extraction Method Based on HTML Structure Analysis and Machine Learning. - Chenyi Liao; Kei Hiroi; Katsuhiko Kaji; Nobuo Kawaguchi (COMPSAC Workshops, 2015)

A proposal of IndoorGML extended data model for pedestrian-oriented voice navigation system. - Hirokazu Iida; Kei Hiroi; Katsuhiko Kaji; Nobuo Kawaguchi (ISA@SIGSPATIAL, 2015)

Design and implementation of algorithm for estimation of elevator travel distance using smartphone accelerometer. - Antonio Martinez; Kei Hiroi; Nobuo Kawaguchi (UbiComp/ISWC Adjunct, 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 (UbiComp/ISWC Adjunct, 2015)

Velobug: a mobile system for 3D indoor mapping. - Weimin Wang 007; Kenji Yamakawa; Kei Hiroi; Katsuhiko Kaji; Nobuo Kawaguchi (UbiComp/ISWC Adjunct, 2015)

Indoor positioning method integrating pedestrian Dead Reckoning with magnetic field and WiFi fingerprints. - Ryoji Ban; Katsuhiko Kaji; Kei Hiroi; Nobuo Kawaguchi (ICMU, 2015)

A better positioning with BLE tag by RSSI compensation through crowd density estimation. - Kei Hiroi; Yoichi Shinoda; Nobuo Kawaguchi (UbiComp Adjunct, 2016)

HASC-PAC2016: large scale human pedestrian activity corpus and its baseline recognition. - Haruyuki Ichino; Katsuhiko Kaji; Ken Sakurada; Kei Hiroi; Nobuo Kawaguchi (UbiComp Adjunct, 2016)

UbiComp/ISWC 2015 PDR challenge corpus. - Katsuhiko Kaji; Masaaki Abe; Weimin Wang 007; Kei Hiroi; Nobuo Kawaguchi (UbiComp Adjunct, 2016)

Measurement methods of spatial ability using a virtual reality system. - Kosuke Shimada; Kei Hiroi; Nobuo Kawaguchi; Katsuhiko Kaji (ICMU, 2016)

FloodEye: Real-time flash flood prediction system for urban complex water flow. - Kei Hiroi; Nobuo Kawaguchi (IEEE SENSORS, 2016)

PIEM: Path Independent Evaluation Metric for Relative Localization. - Masaaki Abe; Katsuhiko Kaji; Kei Hiroi; Nobuo Kawaguchi (IPIN, 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 (MobiQuitous, 2016)

A Location Estimation Method using BLE Tags Distributed Among Participants of a Large-Scale Exhibition. - Kenta Urano; Kei Hiroi; Katsuhiko Kaji; Nobuo Kawaguchi (MobiQuitous (Adjunct Proceedings), 2016)

Compensation scheme for PDR using sparse location and error model. - Junto Nozaki; Kei Hiroi; Katsuhiko Kaji; Nobuo Kawaguchi (UbiComp/ISWC Adjunct, 2017)

A location estimation method using mobile BLE tags with tandem scanners. - Kenta Urano; Katsuhiko Kaji; Kei Hiroi; Nobuo Kawaguchi (UbiComp/ISWC Adjunct, 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 (ICMU, 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)

Short Segment Random Forest with Post Processing Using Label Constraint for SHL Recognition Challenge. - Hitoshi Matsuyama; Kenta Urano; Kei Hiroi; Katsuhiko Kaji; Nobuo Kawaguchi (UbiComp/ISWC Adjunct, 2018)

6th International Workshop on Human Activity Sensing Corpus and Applications (HASCA). - Kazuya Murao; Yu Enokibori; Hristijan Gjoreski; Paula Lago; Tsuyoshi Okita 002; Pekka Siirtola; Kei Hiroi; Philipp M. Scholl (UbiComp/ISWC Adjunct, 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 (UbiComp/ISWC Adjunct, 2018)

Compensation Scheme for PDR Using Component-Wise Error Models. - Junto Nozaki; Kei Hiroi; Katsuhiko Kaji; Nobuo Kawaguchi (Human Activity Sensing, 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 (BigComp, 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 (UbiComp/ISWC Adjunct, 2019)

Ballroom dance step type recognition by random forest using video and wearable sensor. - Hitoshi Matsuyama; Kei Hiroi; Katsuhiko Kaji; Takuro Yonezawa; Nobuo Kawaguchi (UbiComp/ISWC Adjunct, 2019)

7th international workshop on human activity sensing corpus and applications (HASCA). - Kazuya Murao; Yu Enokibori; Hristijan Gjoreski; Paula Lago; Tsuyoshi Okita 002; Pekka Siirtola; Kei Hiroi; Philipp M. Scholl; Mathias Ciliberto (UbiComp/ISWC Adjunct, 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 (UbiComp/ISWC Adjunct, 2019)

An End-to-End BLE Indoor Location Estimation Method Using LSTM. - Kenta Urano; Kei Hiroi; Takuro Yonezawa; Nobuo Kawaguchi (ICMU, 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 (ICT-DM, 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 (IGARSS, 2019)

Processing Time and Reproducibility Toward A Real-Time Simulation System for Flood Evacuation. - Kei Hiroi; Masatoshi Enomoto; Tsubasa Yumura; Toshiyuki Miyachi (IGARSS, 2019)

Verification on Evacuation of Flood Disaster by Using Gps: Case Study in Mabi, Japan 2018. - Takahiro Yoshida; Kei Hiroi; Yoshiki Yamagata; Daisuke Murakami (IGARSS, 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 (IPIN (Short Papers/Work-in-Progress Papers), 2019)

Basic Study of BLE Indoor Localization using LSTM-based Neural Network. - Kenta Urano; Kei Hiroi; Takuro Yonezawa; Nobuo Kawaguchi (MobiSys, 2019)

Capturing Subjective Time as Context and It's Applications. - Takuro Yonezawa; Yuuki Nishiyama; Kei Hiroi; Nobuo Kawaguchi (MobiSys, 2019)

Gait Dependency of Smartphone Walking Speed Estimation using Deep Learning. - Takuto Yoshida; Junto Nozaki; Kenta Urano; Kei Hiroi; Takuro Yonezawa; Nobuo Kawaguchi (MobiSys, 2019)

Flood Area Estimation Using Personal Location Data - Case Study of Japan Floods in 2018. - Kei Hiroi; Takahiro Yoshida; Yoshiki Yamagata; Nobuo Kawaguchi (PerCom Workshops, 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 (PerCom Workshops, 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)

8th international workshop on human activity sensing corpus and applications (HASCA). - Kazuya Murao; Yu Enokibori; Hristijan Gjoreski; Paula Lago; Tsuyoshi Okita 002; Pekka Siirtola; Kei Hiroi; Philipp M. Scholl; Mathias Ciliberto (UbiComp/ISWC Adjunct, 2020)

9th International Workshop on Human Activity Sensing Corpus and Applications (HASCA). - Kazuya Murao; Yu Enokibori; Hristijan Gjoreski; Paula Lago; Tsuyoshi Okita 002; Pekka Siirtola; Kei Hiroi; Philipp M. Scholl; Mathias Ciliberto; Kenta Urano (UbiComp/ISWC Adjunct, 2021)

An End-to-End BLE Indoor Localization Method Using LSTM. - Kenta Urano; Kei Hiroi; Takuro Yonezawa; Nobuo Kawaguchi (J. Inf. Process., 2021)

10th International Workshop on Human Activity Sensing Corpus and Applications (HASCA). - Kazuya Murao; Yu Enokibori; Hristijan Gjoreski; Paula Lago; Tsuyoshi Okita 002; Pekka Siirtola; Kei Hiroi; Philipp M. Scholl; Mathias Ciliberto; Kenta Urano (UbiComp/ISWC Adjunct, 2022)

Data Augmentation with Synthesized Damaged Roof Images Generated by GAN. - Koki Asami; Shono Fujita; Kei Hiroi; Michinori Hatayama (ISCRAM, 2022)

11th International Workshop on Human Activity Sensing Corpus and Applications (HASCA). - Kazuya Murao; Yu Enokibori; Hristijan Gjoreski; Paula Lago; Tsuyoshi Okita 002; Pekka Siirtola; Kei Hiroi; Philipp M. Scholl; Mathias Ciliberto; Kenta Urano (UbiComp/ISWC Adjunct, 2023)

An Orchestrator Framework for IoT-Based Disaster Prevention Simulation. - Kei Hiroi; Akihito Kohiga; Sho Fukaya; Yoichi Shinoda (SENSORS, 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 (ITDRR, 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 (SIMULTECH, 2023)

Demo: Flood Damage CyRealization with an Orchestrator Framework. - Kei Hiroi; Souma Nakagawa; Ryoma Takahashi; Akihito Kohiga; Sho Fukaya; Yoichi Shinoda (PerCom Workshops, 2024)