Faculty Profiles - YONEZAWA Takuro

Papers - YONEZAWA Takuro

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Encouraging Team Behavior Modification Using Life Log Reviewed

Vol. 2014 ( 9 ) page： 1-8 2014.3

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

Currently, everyone can detect and store many life-log data very easily with the spread of smart phones or wearable devices and large scale data storage. Wide variety and large scale life-log data are very useful to self behavior change, medical care, education, and social analytics. Existing researches of human behavior change using life-log data focus on individual human behavior change. But nowadays everyone have communication equipment like smart phones. Group behavior change is very useful to keep workers' health in company and/or managing amount of practice in a sport team. Group has many kind of human relations, for example, manager and normal member. Therefore techniques for individual human behavior change is not effective to groups. The biggest aim of our research is to build the model of group behavior change. Specially, we focus on team behavior change. In this paper, we propose six types of group behavior model based on the "competition" and "collaboration" technique. We used encouraging team modification application in sports team and laboratory for keeping the sit-up exercise for 3 weeks. Sit-up exercise is very important to preventing the injury and keep fit for the sport team and the laboratory member. We create 8 groups in a team. We evaluate and consider this model based on the change of the self-efficacy and number of sit-up activities.

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ClouT: Leveraging Cloud computing techniques for improving management of massive IoT data Reviewed Open Access

Jose Antonio Galache, Takuro Yonezawa, Levent Gurgen, Daniele Pavia, Marco Grella, Hiroyuki Maeomichi

2014 IEEE 7TH INTERNATIONAL CONFERENCE ON SERVICE-ORIENTED COMPUTING AND APPLICATIONS (SOCA) page： 324 - 327 2014

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

The Smart City concept relates to improve efficiency of city services and facilitate a more sustainable development of cities, as well as standing as the key concept for the future technological developments in Future Internet, IoT and, for the great quantity of information stored, big data and cloud computing. In this sense, this paper presents the ClouT project, a joint European-Japanese project, whose main aim is making citizens aware of city resources and helping them to use and care these resources by mean of smart IoT services in the Cloud. This objective is addressed through the definition of a three layer architecture composed of: CIaaS, CPaaS and CSaaS layers. On top of this architecture, different use cases associated to different application domains will be developed, mainly within the four cities that take part of the consortium: Mitaka and Fujisawa in Japan, and Santander and Genova in Europe.

DOI： 10.1109/SOCA.2014.47

Web of Science

Scopus

SENSeTREAM: Enhancing online live experience with sensor-federated video stream using animated two-dimensional code Reviewed

Takuro Yonezawa, Masaki Ogawa, Yutaro Kyono, Hiroki Nozaki, Jin Nakazawa, Osamu Nakamura, Hideyuki Tokuda

UbiComp 2014 - Proceedings of the 2014 ACM International Joint Conference on Pervasive and Ubiquitous Computing page： 301 - 305 2014

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

We propose a novel technique that aggregates multiple sensor streams generated by totally different types of sensors into a visually enhanced video stream. This paper shows major features of SENSeTREAM and demonstrates enhancement of user experience in an online live music event. Since SENSeTREAM is a video stream with sensor values encoded in a two-dimensional graphical code, it can transmit multiple sensor data streams while maintaining their synchronization. A SENSeTREAM can be transmitted via existing live streaming services, and can be saved into existing video archive services. We have implemented a prototype SENSe- TREAM generator and deployed it to an online live music event. Through the pilot study, we confirmed that SENSe- TREAM works with popular streaming services, and provide a new media experience for live performances. We also indicate future direction for establishing visual stream aggregation and its applications.

DOI： 10.1145/2632048.2632104

Web of Science

Scopus

Flying display: A movable display pairing projector and screen in the air

Hiroki Nozaki

Conference on Human Factors in Computing Systems - Proceedings Vol. 2014 ( 10 ) page： 909 - 914 2014

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

We developed Flying Display, a novel movable public display system which can provide information to the people anywhere at anytime. This system consists of two UAVs (Unmanned Aerial Vehicles) with a projector and a screen. Flying Display achieves moving freely and keeping stable in 3-D space. Flying Display moves closer to people and gives information directly to them. To evaluate performance of Flying Display, we performed two experiments for adapting a flying control algorithm. We also showed the stability of Flying Display systems by trajectories of each UAV. This paper highlights the performance of Flying Display and discusses the Flying Display's potential for public displays in physical space.

DOI： 10.1145/2559206.2579410

Scopus

CiNii Research

Orchestration of Smart City Services across Ground, Air, and Space Reviewed

Jin Nakazawa, Hideyuki Tokuda, Yutaro Kyono, Takuro Yonezawa

2014 IEEE 7TH INTERNATIONAL CONFERENCE ON SERVICE-ORIENTED COMPUTING AND APPLICATIONS (SOCA) page： 332 - 333 2014

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

The paper proposes vertical/horizontal smart city service orchestration in terms of networking, sensing and actuation across ground, air and space. Smart city services should support in both usual and emergency situations, however, the system requirements to the different situation differs because network availability and sensing/acting priority are different among the situations. To fulfil various requirements for smart city serves, we present vertical/horizontal service orchestration through Fujisawa field trials in Japan.

DOI： 10.1109/SOCA.2014.28

Web of Science

Scopus

Towards Health Exercise Behavior Change for Teams Using Life-logging Reviewed

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

2014 IEEE 16TH INTERNATIONAL CONFERENCE ON E-HEALTH NETWORKING, APPLICATIONS AND SERVICES (HEALTHCOM) page： 397 - 403 2014

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

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

DOI： 10.1109/HealthCom.2014.7001876

Web of Science

Scopus

Classifying urban events' popularity by analyzing friends information in location-based social network. Reviewed

Makoto Kawano, Takuro Yonezawa, Jin Nakazawa, Satoshi Kawasaki, Ken Ohta, Hiroshi Inamura, Hideyuki Tokuda

The First International Conference on IoT in Urban Space, Urb-IoT 2014, Rome, Italy, October 27-28, 2014 page： 87 - 89 2014

LiPS: Linked participatory sensing for optimizing social resource allocation Reviewed

Mina Sakamura, Takuro Yonezawa, Jin Nakazawa, Kazunori Takashio, Hideyuki Tokuda

UbiComp 2014 - Adjunct Proceedings of the 2014 ACM International Joint Conference on Pervasive and Ubiquitous Computing page： 1015 - 1023 2014

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

This paper proposes a concept of linked participatory sensing, called LiPS, that divide a complex sensing task into small tasks and link each other to optimize social resource allocation. Recently participatory sensing have been spreading, but its sensing tasks are still very simple and easy for participants to deal with (e.g. Please input the number of people standing in a queue. etc.). To adapt to high-level tasks which require specific skills such as those in engineering, the medical profession or authority such as the organizer of the event, we need to optimize social resource allocation because the number of such professionals are limited. To achieve the complex sensing tasks efficiently, LiPS enables to divide a complex sensing task into small tasks and link each other by assigning proper sensors. LiPS can treat physical sensors and human as hybrid multi-level sensors, and task provider can arrange social resource allocation for the goal of each divided sensing task. In this paper, we describe the design and development of the LiPS system. We also implemented an in-lab experiment as the first prototype of hybrid sensing system and discussed the model of further system through users' feedback. Copyright 2014 ACM.

DOI： 10.1145/2638728.2641286

Web of Science

Scopus

Help me!: Valuing and visualizing participatory sensing tasks with physical sensors Reviewed

Mina Sakamura, Takuro Yonezawa, Jin Nakazawa, Kazunori Takashio, Hideyuki Tokuda

ACM International Conference Proceeding Series page： 3:1-3:6 2014

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

Recent progress of mobile devices such as smartphones enables human to leverage their perception ability as a part of sensing framework. This sensing framework, so called participatory sensing, distributes various sensing tasks (e.g., whether report, waiting time in a queue, traffic conditions etc.) to possible participants. Then, participants can select and achieve the sensing tasks. However, in the coming future with the rapid growth of participatory sensing and increasing number of sensing tasks, it must be very hard for users to choose appropriate sensing tasks around them. To solve this problem, we propose a system called Help Me!, which can value and visualize importance of sensing tasks by quantifying them in cooperation with physical sensors. Since Help Me! system provides objective index for sensing tasks, it enhances opportunity for users to participate to sensing tasks. We designed and implemented Help Me! system as an integrated architecture of physical sensors and participatory sensors. Through initial in-lab experiment, we confirmed that Help Me! system can enhance opportunity to participate to sensing tasks for users. © 2014 ACM.

DOI： 10.1145/2637064.2637095

Scopus

Vinteraction: Vibration-based information transfer for smart sensing devices Reviewed

Yonezawa T., Nakazawa J., Tokuda H.

ACM International Conference Proceeding Series 2014

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：ACM International Conference Proceeding Series

According to the spread of smart devices such as smartphones and smart tablets, opportunities to communicate between them will be more increased. Though we usually use WiFi and Bluetooth, it is still burden task for end-users. Many previous techniques to collaborate devices easily has been also proposed, they are not always best solution in some situations. This paper proposes a new interaction method called Vinteracion, which leverages combination of vibrator and accelerometer to send information from smart device to the other smart device. Vinteraction enables users to use touch interaction like Near Field Communication, which provides easy and intuitive way. We present an algorithm and implementation of vibration-based communication that can be adapted to any combination of smart devices. © 2014 ACM.

DOI： 10.1145/2637064.2637101

Scopus

Proceedings of the 2014 International Workshop on Web Intelligence and Smart Sensing, IWWISS '14, Saint Etienne, France, September 1-2, 2014 Reviewed

IWWISS 2014 2014

Monitoring Dependability of City-scale IoT Using D-Case Reviewed

Hideyuki Tokuda, Yonezawa Takuro, Jin Nakazawa

2014 IEEE WORLD FORUM ON INTERNET OF THINGS (WF-IOT) page： 371 - 372 2014

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

City-scale IoT, a fundamental infrastructure for smart cities, requries to sense a range of ubiquitous entities in a city including humans, objects, and spaces. Ubiquitous sensor networks (USN) is the key technology to this. However, failures of a USN may result in hazards in our daily lives in smart cities. Monitoring of USN, rapid detection of faults and failures, and recovery from them are thus important for better applications of USN. This paper proposes a means to do so comprehensively by using Dependability Cases (D-Case). Since USN is a system composed of variety of components such ash wireless sensor nodes, database servers, and network appliances, we need a tool that can target them in common. Our tool enables to execute monitoring programs on a D-Case diagram, which is represented with Goal Structuing Notation (GSN), so that it can target a variety of devices and services.

DOI： 10.1109/WF-IoT.2014.6803192

Web of Science

Scopus

International Workshop on Web Intelligence and Smart Sensing IWWISS'2014 Reviewed

Pierre Maret, Fuyuki Ishikawa, Satoshi Honda, Takuro Yonezawa, Rajendra Akerkar, Till Riedel

ACM International Conference Proceeding Series page： 1:1-1:6 2014

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

The main objective of the IWWISS 2014 is to explore whether the underlying ideas of Web Intelligence and technologies can meet the domain of Smart Sensors to allow the development of an open information space which we call the Smart Sensing Web. The Smart Sensing Web unifies the real and the virtual world by integrating sensor technologies and Web intelligence technologies. © 2014 ACM.

DOI： 10.1145/2637064.2637088

Scopus

イベント参加者のフォロー関係に基づくイベント分類手法の提案 Reviewed

河野慎 , 米澤拓郎 , 中澤仁 , 川崎仁嗣 , 太田賢 , 稲村浩 , 徳田英幸

情報処理学会研究報告. MBL, [モバイルコンピューティングとユビキタス通信研究会研究報告] Vol. 2013 ( 3 ) page： 1 - 6 2013.12

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：一般社団法人情報処理学会

近年 GPS が搭載されたスマートフォンや SNS の普及によって,ユーザがリアルタイムに位置情報を付加させた情報を発信できるようになってきた.これらの位置情報付き発言を収集・解析することで,人々が集まって形成されるソーシャルイベントを検出することが可能となる.ソーシャルイベントを検出するには発見と分類の 2 段階の過程があり,本研究ではイベントが発見された後の分類手法を提案する.イベントには特徴・性質として内容・規模・大衆性の 3 つがあると考え、分類軸として大衆性に着目する.位置情報を付与させて発言しているイベント参加者のフォロー関係を解析することで大衆性の推定をし,イベントの分類を目指す.本研究ではリアルタイムに解析を行えるツールを設計・実装し,大衆性の推定手法について考察を行った.

CiNii Research

Synchrometer: Creating similarity of daily activity with others in lifelong environment

勝治宏基, 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. 2013 ( 17 ) page： 1 - 7 2013.10

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：一般社団法人情報処理学会

Recently, because of miniaturization and low cost of the sensing devices, obtaining human behavior became more easier . Therefore, lifelog, which is getting and storing our daily life activities, became to be studied widely. In this study, we propose the system Synchrometer which create a similarity as similar-activity from two people's daily activity. Similar-activity have a possibility to use to behavioral improvements, medical, nursing, generating new communication and so on.

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Synchrometer: Creating similarity of daily activity with others in lifelong environment

勝治宏基, 米澤拓郎, 中澤仁, 高汐一紀, 徳田英幸

IPSJ SIG technical reports Vol. 2013 ( 17 ) page： 1 - 7 2013.10

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：一般社団法人情報処理学会

CiNii Research

チームの動機づけにおける個人の貢献度の可視化に関する一検討 (知的環境とセンサネットワーク) Reviewed

西山勇毅, 米澤拓郎, 中澤仁, 徳田英幸

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 Vol. 113 ( 38 ) page： 233-240 2013.5

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

近年,個人の動機付けや行動改善のためのアプリケーションが普及してきた.今後,研究プロジェクトチームやスポーツチームなどの明確な目標を持ち,様々な立場の人間が所属するチームでの利用が考えられる.本研究では,個人の貢献度の可視化がチームの動機づけに与える影響の調査を行った.情報共有アプリケーションを実装し,ランダムに抽出したチームに対して,他人に個人の貢献度を見せた場合と見せない場合での比較実験を行い評価した.

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ラッキーなう : 時間と場所情報に注目した公共ディスプレイとのインタラクションモデルとその応用 (知的環境とセンサネットワーク) Reviewed

小川正幹, ユルムマルコ, 米澤拓郎, 中澤仁, 徳田英幸

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 Vol. 113 ( 38 ) page： 199-206 2013.5

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

近年,ディスプレイの低価格化や,デジタルサイネージをはじめとする電子コンテンツへの関心の増加により,公共ディスプレイが普及して来た.それにともない,ユーザからの入力によってニーズに応じた情報を提供するインタラクティブな公共ディスプレイも登場して来た.現在インタラクティブな公共ディスプレイの持つ課題の一つとして,ディスプレイがユーザに対して有益である事を,ユーザへ伝える事が難しいという点が挙げられる.この間題を解決する事により,インタラクティブな公共ディスプレイへの関心や,利用頻度の向上が達成されると考えられる.本稿では,時間と場所を限定することでユーザに特別感を与える公共ディスプレイとのインタラクションモデルを提案する.その一例として,その時その場所にいた人々だけに配布され,かつその人だけが利用可能なクーポン配信アプリケーションを構築し評価実験を行い,本研究で提案したインタラクションモデルの有用性を示した.

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Synchrometer : ライフログを利用した他者との生活スタイルのシンクロ度合判定手法(ポスターセッション,フレッシュマンセッション及び一般)

勝治宏基, 米澤拓郎, 中澤仁, 徳田英幸

電子情報通信学会技術研究報告. ASN, 知的環境とセンサネットワーク Vol. 113 ( 38 ) page： 185 - 186 2013.5

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：一般社団法人電子情報通信学会

近年,センシングデバイスの小型化,低価格化により,ウェアラブルセンサを利用して人の行動を取得する事が容易になった.それにより,私達の日々の生活行動を自動的に取得,蓄積するライフログが幅広く研究される様になった.本研究では,自分と他人の一日の行動から二人の似た行動をシンクロした行動として取得するシステムSynchrometerを提案する.取得したシンクロは行動改善や医療,介護,新しいコミュニケーションの生成など,様々な場で利用する事が可能である.

CiNii Research

動的かつ不定形な対象に投影するプロジェクションマッピング手法の提案(ポスターセッション,フレッシュマンセッション及び一般) Reviewed

興野悠太郎, 小川正幹, 米澤拓郎, 中澤仁, 徳田英幸

電子情報通信学会技術研究報告. ASN, 知的環境とセンサネットワーク Vol. 113 ( 38 ) page： 187 - 188 2013.5

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：一般社団法人電子情報通信学会

近年,スクリーン以外を対象として映像を投影するプロジェクションマッピングが盛んとなっている.しかし,現在のプロジェクションマッピングでは,静的な物体に対して投影されているものがほとんどで,移動している物体や形が変わる対象に投影する場合,あらかじめ複雑なキャリブレーションが必要な事から,あまり取り組まれていない.しかし,これらの物体に投影する事で,よりダイナミックで演出効果の高い表現を実現できると考えられる.本研究では,動的かつ不定形の物体に対し,事前のキャリブレーションを必要とすることなく,対象の状況を動的に判別し,投影を可能とする手法を実現する.

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Papers - YONEZAWA Takuro