Faculty Profiles - YONEZAWA Takuro

Papers - YONEZAWA Takuro

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SpoTrip: 観光客リピータ化促進のための隠れスポット情報提供システムの評価 Reviewed

片山晋, 礒川直大, 小渕幹夫, 西山勇毅, 大越匡, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） Vol. 2017-UBI53 ( 12 ) page： 1 2017

Shape Changing Locomotion by Spiny Multipedal Robot Reviewed

Nozaki, H; Niiyama, R; Yonezawa, T; Nakazawa, J

2017 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND BIOMIMETICS (IEEE ROBIO 2017) page： 2162 - 2166 2017

Likeyboard: ライフログデータ共有簡易化のためのスマートフォンキーボードインタフェース Reviewed

石川伶, 佐々木航, 西山勇毅, 大越匡, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） Vol. 2017-UBI53 ( 12 ) page： 1 2017

実況lizer: スポーツ実況のメタファに基づいたライブ都市センサデータの可聴化手法の提案 Reviewed

井上義之, 米澤拓郎, 大越匡, 中澤仁

研究報告ユビキタスコンピューティングシステム（UBI） Vol. 2017-UBI56 ( 6 ) page： 1 2017

An Empirical Study on Coverage-Ensured Automotive Sensing using Door-to-door Garbage Collecting Trucks Reviewed

Yin Chen, Jin Nakazawa, Takuro Yonezawa, Takafumi Kawasaki, Hideyuki Tokuda

Proceedings of the 2nd International Workshop on Smart, SmartCities 2016 page： 6:1-6:6 - 6 2016.12

Language：English Publishing type：Research paper (international conference proceedings) Publisher：Association for Computing Machinery, Inc

Due to the advance in information and communication technologies, smart cities have become an increasingly appealing vision. One indispensable basis in the research, development and implementation of smart cities is urban sensing technologies, which collect various citywide data that will be processed to generate information for understanding the status of cities. Automotive sensing is a novel urban sensing technology that utilizes the mobility of automobiles to conduct sensing tasks. In a collaborative smart-city project with the city office of Fujisawa City, Japan, we designed and implemented an automotive sensing platform called Cruisers, and have deployed it into the garbage collecting trucks of the city to evaluate the applicability of automotive sensing in realistic urban settings. In this paper, we first detail the system design, implementation and deployment of Cruisers and then evaluate its performance in realistic setting.

DOI： 10.1145/3009912.3009921

Scopus

SOXFire: A Universal Sensor Network System for Sharing Social Big Sensor Data in Smart Cities Reviewed

Takuro Yonezawa, Tomotaka Ito, Jin Nakazawa, Hideyuki Tokuda

Proceedings of the 2nd International Workshop on Smart, SmartCities 2016 page： 2:1-2:6 - 6 2016.12

Language：English Publishing type：Research paper (international conference proceedings) Publisher：Association for Computing Machinery, Inc

We introduce SOXFire, a multi-community city-wide sensor network for sharing social big sensor data in smart cities. The goal of SOXFire is to provide practical distributed and federated infrastructure for IoT sensor data sharing among various users/organizations in a way that is scalable, exten- sible, easy to use and secure with preserving privacy. SOX- Fire supports not only access to physical IoT sensors but also crowd sensing and SNS/Web sensing where city employees, citizen and WEB developers contributed in a different ways but unified APIs. In this paper, we outline the concept of SOXFire and present it's design and implementation with tangible libraries and tools. In addition, we discuss capability and usability of SOXFire based on our experiments in smart city project in Japan.

DOI： 10.1145/3009912.3009922

Scopus

EverCuate: Asynchronously-participatable Tsunami Evacuation Training System Open Access

大越匡, 米澤拓郎, 山本慎一郎, 中島円, 神武直彦, 栗田治, 中澤仁, 徳田英幸

情報処理学会論文誌 Vol. 57 ( 10 ) page： 2143 - 2161 2016.10

Language：Japanese Publishing type：Research paper (scientific journal)

大地震発生時の津波から身を守るためには平常時の津波避難訓練が重要とされる．本研究は，従来行われてきたイベント型の津波避難訓練における，災害シナリオ，訓練日時，訓練場所，参加可能な人の面での柔軟性欠如の課題に取り組み，ユビキタス・コンピューティング技術を利用してそれらを解決する「ユーザ非同期参加型津波避難訓練モデル」を提案する．同モデルにおいては，各ユーザが個別に，任意のタイミング・災害シナリオ・地点で避難訓練を実施でき，また避難行動記録や避難中の気づきを集約して可視化分析することで，防災計画の更新に活用できることを特長とする．本研究では同モデルに基づきプロトタイプシステム「EverCuate」を構築した．神奈川県藤沢市において40人の被験者による229回にわたる広範なユーザ評価実証実験，およびアンケート評価を行い，訓練への参加のしやすさへの寄与，防災意識向上への貢献，収集した避難行動やユーザフィードバック情報の可視化による防災計画への活用，既存方式と比較しての施策としての有効性の面で効果が明らかになった．Evacuation trainings have been conducted as an effective action to protect people from incoming tsunamis in case of a big earthquake. This research addresses limitations of existing conventional "event-style" tsunami evacuation trainings, that are inflexible in disaster scenarios, training timings, training locations, and participatable trainees. We propose a new ubiquitous computing technology-supported training model named "Asynchronously-Participatable Tsunami Evacuation Training Model" and a prototype system "EverCuate" based on this model. We evaluated the EverCuate system by conducting an extensive user study in Fujisawa city, Kanagawa, with 40 participants and the total number of 229 trainings. The evaluation results validated the effectiveness of EverCuate in terms of easiness in participation to a training, promotion of understanding necessity of different evacuation behaviour for different disaster scenarios, and easiness of analysing people's real evacuation behaviour from the view point of local authorities.

Open Access

CiNii Research

J-GLOBAL

MinaQn: Web-based Participatory Sensing Platform for Citizen-centric Urban Development Open Access

坂村美奈, 米澤拓郎, 伊藤友隆, 中澤仁, 徳田英幸

情報処理学会論文誌 Vol. 57 ( 10 ) page： 2162 - 2174 2016.10

Language：Japanese Publishing type：Research paper (scientific journal)

市民参加型まちづくり（Participatory planning）とは，まちづくりの過程に市民を巻き込むことであり，実際の都市の中で起こっている問題を素早く発見，解決できる可能性が高い．市民参加型まちづくりを促進するためには市の職員と市民の間での日常的なコミュニケーションを活性化することが重要である．本研究の目的は，人々が日常的に持つモバイル端末やPC端末を通して情報をやりとりする参加型センシングを市民参加型まちづくりにも適用することである．既存の参加型センシングの例では，質問の内容カテゴリが限定的なものや，市民の意見収集，意見交換を行うための特定のアプリケーションのインストールが必要であるものが存在する．また，市民から提供された情報はプライバシ情報を除いたオープンな情報であることやシステムの操作が容易であることが望ましい．本研究ではこれらの課題を解決し，市民参加型まちづくりのための参加型センシングシステム，MinaQnを提案する．本研究ではMinaQnを2週間にわたって3都市（藤沢市・茅ヶ崎市・寒川町）の公式ホームページに組み込み，市の職員および市民に利用してもらう実証実験を行った．全体として1,000個以上の回答データと市の職員および市民からのフィードバックを得ることで，定性的および定量的な評価を行い，将来異なる地域や多くの市民に持続的に参加してもらうためにはどうすればよいか，これからの参加型センシングシステムのデザイン指針を示した．特に災害時において今後より多くの市民に位置情報を提供してもらうためには，質問の意図説明やプッシュ通知など市からの積極性が必要なことや，市の職員が実際に自由な質問設定をするために自治体の中あるいは市全体で議論し質問内容の枠組みを増やしていけるような取り組みや制度の策定が必要なことが分かった．Participatory planning is to involve citizens in a process of urban development, which is likely to find out and solve a problem happening in an actual city. To promote participatory planning, it is important to activate everyday communication between city officials and citizens. The purpose of this research is to apply the participatory sensing technology to participatory planning which people exchange information through their mobile devices or computers. In the existing examples of participatory sensing, the categories of questions are limited or it is necessary to install a specific application for collecting and reflecting citizens' demands. Besides, it is required that data from citizens should be open without privacy information and also operation of a system should be easy. To solve these problems, we propose MinaQn (Mina means everybody in Japanese), a participatory sensing system for citizen-centric urban development. We carried out a two weeks experiment in corporation with 3 cities in Japan. Overall, more than 1,000 answer data and feedback were gathered and we measured the effectiveness of MinaQn with qualitative and quantitative data. Also we direct the design policies of future participatory sensing systems. In particular, to get more people involved in providing their location information in the event of a natural disaster, we found that an active agent of city officials and support for the establishment of standards and systems for setting free questions are needed.

Open Access

CiNii Research

Message from the general and program chairs Reviewed

Takuro Yonezawa, Till Riedel, Kota Tsubouchi

ACM International Conference Proceeding Series Vol. 24-25- 2016.5

ReFabricator: Integrating everyday objects for digital fabrication Reviewed

Suguru Yamada, Masaki Ogawa, Hironao Morishige, Takuro Yonezawa, Hiroki Nozaki, Hideyuki Tokuda

Conference on Human Factors in Computing Systems - Proceedings Vol. 07-12- page： 3804 - 3807 2016.5

Language：English Publishing type：Research paper (international conference proceedings) Publisher：Association for Computing Machinery

Since current digital fabrication relies on 3D printer very much, there are several concerns such as printing cost (i.e., both financial and temporal cost) and sometimes too homogeneous impression with plastic filament. To address and solve the problem, we propose ReFabricator, a computational fabrication tool integrating everyday objects into digital fabrication. ReFabrication is a concept of fabrication, mixing the idea of Reuse and Digital Fabrication, which aims to fabricate new functional shape with ready made products, effectively utilizing its behavior. As a system prototype, we have implemented a design tool which enables users to gather up every day objects and reassemble them to another functional shape with taking advantages of both analog and digital fabrication. In particular, the system calculates the optimized positional relationship among objects, and generates joint objects to bond the objects together in order to achieve a certain shape.

DOI： 10.1145/2851581.2890237

Scopus

Toward Health Exercise Behavior Change for Teams Using Lifelog Sharing Models Reviewed Open Access

Yuuki Nishiyama, Tadashi Okoshi, Takuro Yonezawa, Jin Nakazawa, Kazunori Takashio, Hideyuki Tokuda

IEEE JOURNAL OF BIOMEDICAL AND HEALTH INFORMATICS Vol. 20 ( 3 ) page： 775 - 786 2016.5

Language：English Publishing type：Research paper (scientific journal) Publisher：IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

Recent technological trends in mobile/wearable devices and sensors have been enabling an increasing number of people to collect and store their "lifelog" easily in their daily lives. Beyond exercise behavior change of individual users, our research focus is on the behavior change of teams, based on lifelogging technologies and lifelog sharing. In this paper, we propose and evaluate six different types of lifelog sharing models among team members for their exercise promotion, leveraging the concepts of "competition" and "collaboration." According to our experimental mobile web application for exercise promotion and an extensive user study conducted with a total of 64 participants over a period of three weeks, the model with a "competition" technique resulted in the most effective performance for competitive teams, such as sports teams.

DOI： 10.1109/JBHI.2015.2478903

Appearance-based person identification algorithm to search for persons using a flying robot Reviewed

Yonezawa T., Takeuchi E., Ohno K., Tadokoro S.

Ssrr 2015 2015 IEEE International Symposium on Safety Security and Rescue Robotics 2016.3

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Ssrr 2015 2015 IEEE International Symposium on Safety Security and Rescue Robotics

This paper proposes a person identification algorithm that can be used when searching for persons from multiple images captured by flying robots. The images taken by such robots have low resolution and contain various viewing angles of people because they fly at a safe distance from and often move around people. The proposed person identification algorithm is based on appearance and can identify a person from low-resolution images of the upper body. In appearance-based person identification, the accuracy is low when a single image is used. Therefore, the accuracy is improved by accumulating the score. Experimental results obtained using 40 subjects show that the identification accuracy based on images having different view angles is better than that based on images having similar view angles. Further, the identification accuracy increase even when rear images of the person that are barely distinguishable from those of another person are added to the input images. In addition, it can identify persons even when the size of the upper body image is as small as 15 pixels. We performed the identification experiment using images taken by an aerial-robot while it was actually flying and proved the effectiveness of the algorithm.

DOI： 10.1109/SSRR.2015.7442995

Scopus

MyFactor: ライフログを用いたユーザの内面状態に関する因子分析 Reviewed

小渕幹夫, 古川侑紀, 西山勇毅, 大越匡, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） Vol. 2016-UBI-4 ( 10 ) page： 1 2016.2

MyTime: タイムマネジメントの促進を目的としたアプリケーション使用時間自動記録システムの提案 Reviewed

小出粋玄, 小渕幹夫, 西山勇毅, 大越匡, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

研究報告ユビキタスコンピューティングシステム（UBI） Vol. 2016-UBI-4 ( 36 ) page： 1 2016.2

City Happenings into Wikipedia Category: Classifying Urban Events by Combining Analyses of Location-based Social Networks and Wikipedia Reviewed

Shoya Sato, Takuro Yonezawa, Jin Nakazawa, Satoshi Kawasaki, Ken Ohta, Hiroshi Inamura, Hideyuki Tokuda

SECOND INTERNATIONAL CONFERENCE ON IOT IN URBAN SPACE (URB-IOT 2016) Vol. 24-25-May-2016 page： 47 - 52 2016

Language：English Publishing type：Research paper (international conference proceedings) Publisher：ASSOC COMPUTING MACHINERY

Recently, many researchers have been focusing on the detection and classification of urban events by information analysis on social networks. Previous works mainly use text analysis of users' posts on social networks for detecting urban events. However, this approach has a limitation that the users' posts must mention the event for the analysis to be conducted. We propose a new method for classifying urban events by extracting user interest from the location-based social network information without text analysis. The proposed method includes analyzing common friends of users in the vicinity of the event venue and extracting common the friends' attributes by referring to related Wikipedia information. We designed and implemented the proposed method, and conducted an experiment for evaluating our method. Our experimental result shows that our method can classify events well in cases where participants have similar interests.

DOI： 10.1145/2962735.2962740

Web of Science

Scopus

Forward-genetics analysis of sleep in randomly mutagenized mice Reviewed Open Access

Funato H.

Nature Vol. 539 ( 7629 ) page： 378 - 383 2016

European IoT International Cooperation in Research and Innovation Reviewed

Cousin Philippe, Malo Pedro, Congduc Pham, Yu Xiaohui, Li Jun, Song JaeSeung, Thiare Ousmane, Daffe Amadou, Kofuji Sergio, Marao Gabriel, Amazonas Jose, Gurgen Levent, Yonezawa Takuro, Akiyama Toyokazu, Maggio Martino, Moessner Klaus, Miyake Yutaka, Vermesan Ovidiu, Le Gall Franck, Almeida Bruno

Digitising the Industry Internet of Things Connecting the Physical, Digital and Virtual Worlds Vol. 49 page： 293 - 333 2016

Damage Detector: The Damage Automatic Detection of Compartment Lines Using A Public Vehicle and A Camera Reviewed

Takafumi Kawasaki, Makoto Kawano, Takeshi Iwamoto, Michito Matsumoto, Takuro Yonezawa, Jin Nakazawa, Hideyuki Tokuda

ADJUNCT PROCEEDINGS OF THE 13TH INTERNATIONAL CONFERENCE ON MOBILE AND UBIQUITOUS SYSTEMS: COMPUTING NETWORKING AND SERVICES (MOBIQUITOUS 2016) Vol. 28-November-2016 page： 53 - 58 2016

Language：English Publishing type：Research paper (international conference proceedings) Publisher：ASSOC COMPUTING MACHINERY

In Japan, there are 1.2milion kilometers or more of the road, of which 900,000 km of road has been paved. Paved road has been painted compartment line to separate many vehicles and driver-pedestrian. Compartment line is important for drivers and pedestrians because they can recognize for they are aware of the width of the roadway and the sidewalk by the compartment line. Therefore, municipality should inspect the ongoing compartment line but they are inspected by people so the burden for road management is big. The purpose of this research would be to automatically detect the damage of the compartment line. The image obtained from cameras, applying random forest. In this experiment, we used more than about 50,000 of images by capturing a Walking camera and a vehicle-mounted camera. Baseline and precision comparison result, the detection of damage to compartment line, it was confirmed that the proposed method is effective.

DOI： 10.1145/3004010.3004017

Web of Science

Scopus

Cruisers: A Public Automotive Sensing Platform for Smart Cities Reviewed

Yin Chen, Jin Nakazawa, Takuro Yonezawa, Takafumi Kawsaki, Hideyuki Tokuda

PROCEEDINGS 2016 IEEE 36TH INTERNATIONAL CONFERENCE ON DISTRIBUTED COMPUTING SYSTEMS ICDCS 2016 Vol. 2016-August page： 767 - 768 2016

Language：English Publishing type：Research paper (international conference proceedings) Publisher：IEEE

Collecting urban data in a citywide scale plays a fundamental role in the research, development and implementation of smart cities. This demo introduces Cruisers, an automotive sensing platform for smart cities, which is developed based on the following ideas. a) Garbage collecting trucks are used as host automobiles to accommodate sensors, b) 3G cellular communication network is used to wirelessly deliver sensed data directly to servers, and c) Proxy server( s) are adopted to convert the format of sensed data to required ones. This platform has been deployed to 24 garbage collecting trucks at Fujisawa city, i.e., nearly 1/4 of the total number of such trucks in the city. An iOS application is also developed to demonstrate the sensing process and the covered area.

DOI： 10.1109/ICDCS.2016.53

Web of Science

Scopus

Interiorizor: Reassembling Everyday Objects into an Interior Reviewed

Morishige Hironao, Yamada Suguru, Nozaki Hiroki, Ogawa Masaki, Okoshi Tadashi, Yonezawa Takuro, Tokuda Hideyuki

CHI 2016 Symposium on Emerging Japanese HCI Research Collection Program 2016

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Papers - YONEZAWA Takuro