Fujio Toriumi

J-GLOBAL         Last updated: Nov 8, 2018 at 13:35
 
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Name
Fujio Toriumi
Affiliation
The University of Tokyo
ORCID ID
0000-0003-3866-4956

Academic & Professional Experience

 
Apr 2012
 - 
Today
Associate Professor, Graduate School of Engineering, The University of Tokyo
 

Awards & Honors

 
Sep 2018
Influence of Selective Exposure to Viewing Contents Diversity, Best Paper, SocInfo2018
Winner: Kota Kakiuchi, Fujio Toriumi, Masanori Takano, Kazuya Wada, and Ichiro Fukuda
 
Sep 2018
Influence of Selective Exposure to Viewing Contents Diversity, Best Paper, the 10th International Conference on Social Informatics
Winner: Kota Kakiuchi, Fujio Toriumi, Masanori Takano, Kazuya Wada, and Ichiro Fukuda
 

Published Papers

 
池田 圭佑, 榊 剛史, 鳥海 不二夫, 栗原 聡
情報処理学会論文誌数理モデル化と応用(TOM)   11(1) 21-36   Mar 2018
東日本大震災や熊本地震において,Twitterなどのソーシャルメディアが重要な情報源として利用された.一方,デマ情報のような誤った情報の拡散も確認されており,デマ情報の抑制手法の確立は災害大国日本において急務である.しかし,デマ情報がどのように拡散するかは明らかになっておらず,そのため有効な抑制手法も確立されていない.本稿では,これまでに提案した口コミに着目した情報拡散モデルにおいて「人の生活パタン」および「複数の情報源からの情報発信」を考慮した新たな情報拡散モデルを提案する.本モデルを用...
Finding Minors Faced with Online Risk
Yuichi Hirano, Fujio Toriumi, Mitsuteru Tashiro, Kiyotaka Eguchi
Journal of Transformation of Human Behavior under the Influence of Infosocionomics Society   3    Feb 2018   [Refereed]
Transfer Entropy Analysis of Information Flow in a Stock Market
Kiyoshi Izumi, Hiroshi Suzuki, Fujio Toriumi
Economic Foundations for Social Complexity Science. Springer, Singapore   9 193-2018   Sep 2017   [Refereed]
鳥海 不二夫, 榊 剛史
情報処理学会論文誌   58(6) 1287-1299   Jun 2017
近年,ソーシャルメディアにおいては,震災や選挙,炎上などの社会的イベントにより,特定の話題が大きく取り上げられるバースト現象が頻繁に発生している.そのような社会的イベントがどのように社会に受け止められているかを正確に理解するためには,バースト現象を分析し,どのような人々がどのような意見を表明しているかを明らかにするための技術が必要不可欠である.本研究ではバースト現象発生時に,(1)どのようなトピックが含まれるか,(2)各トピックがどのようなユーザによって拡散されているかを分析することで,バ...
臼井 翔平, 鳥海 不二夫
情報処理学会論文誌   58(6) 1268-1276   Jun 2017
本研究では,我々はネットワーク構造上での協調の進化について分析する.ネットワーク構造と協調行動の関係については多くの既存研究が存在するが,ほとんどの研究ではランダムネットワークやスケールフリーネットワークといった単純なネットワークが用いられている.我々は,Greedy Growth Modelを用いて,様々なネットワーク構造を含むネットワークデータセットを構築し,決定木分析を行う.決定木を構築するための説明変数として,5つのネットワーク構造特徴を用いる.しかし,この5つのネットワーク構造特...
鳥海 不二夫, 松澤 有, 鈴村 豊太郎
情報処理学会論文誌   58(6) 1277-1286   Jun 2017
ソーシャルメディア上で頻繁に見られる意見と,世間一般における多数派の意見とは必ずしも一致しない.このような現象が発生する原因の1つにヴォーカル・マイノリティがあると考えられる.本研究では,ヴォーカル・マイノリティ現象が発生する要因を明らかにするために,ソーシャルメディア上でのユーザ行動のマルチエージェントモデルを提案した.提案モデルを用いたシミュレーションによってハブエージェントの影響がヴォーカル・マイノリティが発生する要因の1つであると考えられることを明らかにした.さらに,ソーシャルメデ...
稲葉 通将, 大畠 菜央実, 高橋 健一, 鳥海 不二夫
情報処理学会論文誌   57(11) 2392-2402   Nov 2016
本研究では,人狼ゲームにおけるプレイヤの発話内容を表現するタグを設計し,それらのタグを人狼BBSにおけるプレイヤの発話に付与し分析を行った.分析では,襲撃対象,および処刑対象の決定にプレイヤごとの発話の傾向がどのように影響するのか,また,ゲーム全体のコミュニケーションの傾向とゲームの勝敗の関係について調査した.分析の結果,人間側,人狼側の各プレイヤが自陣営の勝利のために効果的なコミュニケーション戦略,および特定のコミュニケーションとプレイヤの行動の関係が明らかとなった.We focus o...
鳥海 不二夫, 稲葉 通将, 大澤 博隆, 片上 大輔, 篠田 孝祐, 松原 仁
デジタルゲーム学研究   9(1) 1-11   2016
Ikeda Keisuke, Sakaki Takeshi, Toriumi Fujio, Kazama Kazuhiro, Noda Itsuki, Suwa Hirohiko, Shinoda Kosuke, Kurihara Satoshi
Transactions of the Japanese Society for Artificial Intelligence   31(1) NFC-C_1-13   2016
<p>During the 2011 East Japan Great Earthquake Disaster, some people used social media such as Twitter to get information important to their lives. However, the spread of groundless rumor information was big social problem. Therefore, social media...
三浦麻子, 鳥海不二夫, 小森政嗣, 松村真宏, 平石界
人工知能学会論文誌(Web)   31(1) NFC-A.1-9 (J-STAGE)-tori   2016
Kimitaka Asatani, Fujio Toriumi, Hirotada Ohashi
Conflict and Opinion Dynamics on Multiplex Networks   30(5) 658   2015   [Refereed]
Seigo Baba,Fujio Toriumi,Takeshi Sakaki,Kousuke Shinoda,Satoshi Kurihara,Kazuhiro Kazama,Itsuki Noda
Proceedings of the 24th International Conference on World Wide Web Companion, WWW 2015, Florence, Italy, May 18-22, 2015 - Companion Volume   1173-1178   2015   [Refereed]
Fujio Toriumi,Takafumi Nakanishi,Mitsuteru Tashiro,Kiyotaka Eguchi
IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology, WI-IAT 2015, Singapore, December 6-9, 2015 - Volume III   1-4   2015   [Refereed]
Nargis Pervin,Tuan Quang Phan,Anindya Datta,Hideaki Takeda 0001,Fujio Toriumi
Social Computing and Social Media - 7th International Conference, SCSM 2015, Held as Part of HCI International 2015, Los Angeles, CA, USA, August 2-7, 2015, Proceedings   169-182   2015   [Refereed]
Michimasa Inaba,Naoyuki Iwata,Fujio Toriumi,Takatsugu Hirayama,Yu Enokibori,Kenichi Takahashi,Kenji Mase
Agents and Artificial Intelligence - 6th International Conference, ICAART 2014, Angers, France, March 6-8, 2014, Revised Selected Papers   119-136   2014   [Refereed]
Yu Kobayashi,Hirotaka Osawa,Michimasa Inaba,Kousuke Shinoda,Fujio Toriumi,Daisuke Katagami
Proceedings of the second international conference on Human-agent interaction, HAI '14, Tsukuba, Japan, October 29-31, 2014   205-207   2014   [Refereed]
Bungo Miyazaki,Kiyoshi Izumi,Fujio Toriumi,Ryo Takahashi
Int. Syst. in Accounting, Finance and Management   21(3) 169-191   2014   [Refereed]
Daisuke Katagami,Masashi Kanazawa,Fujio Toriumi,Hirotaka Osawa,Michimasa Inaba,Kousuke Shinoda
2015 IEEE International Conference on Fuzzy Systems, FUZZ-IEEE 2015, Istanbul, Turkey, August 2-5, 2015   1-7   2015   [Refereed]
Shohei Usui,Fujio Toriumi,Masato Matsuo,Takatsugu Hirayama,Kenji Mase
JACIII   18(4) 590-597   2014   [Refereed]
Isamu Okada,Hitoshi Yamamoto,Fujio Toriumi,Tatsuya Sasaki
PLoS Computational Biology   11(5) e1004232   May 2015   [Refereed]
Yoshiyuki Okada,Keisuke Ikeda,Kousuke Shinoda,Fujio Toriumi,Takeshi Sakaki,Kazuhiro Kazama,Masayuki Numao,Itsuki Noda,Satoshi Kurihara
JACIII   18(4) 598-607   2014   [Refereed]
MATSUMOTO SHIMPEI, KAWAGUCHI HIROKI, TORIUMI FUJIO
人工知能学会論文誌(Web)   30(1) 393-402 (J-STAGE)   2015
Fujio Toriumi,Hitoshi Yamamoto,Isamu Okada
JACIII   18(4) 616-623   2014   [Refereed]
USUI SHOHEI, TORIUMI FUJIO
人工知能学会論文誌(Web)   30(1) 195-203 (J-STAGE)   2015
Daisuke Katagami,Shono Takaku,Michimasa Inaba,Hirotaka Osawa,Kousuke Shinoda,Junji Nishino,Fujio Toriumi
IEEE International Conference on Fuzzy Systems, FUZZ-IEEE 2014, Beijing, China, July 6-11, 2014   982-987   2014   [Refereed]
Michimasa Inaba,Naoyuki Iwata,Fujio Toriumi,Takatsugu Hirayama,Yu Enokibori,Kenichi Takahashi,Kenji Mase
ICAART 2014 - Proceedings of the 6th International Conference on Agents and Artificial Intelligence, Volume 1, ESEO, Angers, Loire Valley, France, 6-8 March, 2014   14-21   2014   [Refereed]
Nargis Pervin,Hideaki Takeda,Fujio Toriumi
Proceedings of the International Conference on Information Systems - Building a Better World through Information Systems, ICIS 2014, Auckland, New Zealand, December 14-17, 2014      2014   [Refereed]
TORIUMI Fujio, YAMAMOTO Hitoshi
IPSJ Magazine   55(6) 530-538   Jun 2014
Yuki Hirahara,Fujio Toriumi,Toshiharu Sugawara
Social Informatics - 6th International Conference, SocInfo 2014, Barcelona, Spain, November 11-13, 2014. Proceedings   112-120   2014   [Refereed]
Keisuke Ikeda,Yoshiyuki Okada,Fujio Toriumi,Takeshi Sakaki,Kazuhiro Kazama,Itsuki Noda,Kousuke Shinoda,Hirohiko Suwa,Satoshi Kurihara
2014 IEEE/WIC/ACM International Joint Conferences on Web Intelligence (WI) and Intelligent Agent Technologies (IAT), Warsaw, Poland, August 11-14, 2014 - Volume II   21-26   2014   [Refereed]
USUI Shohei, TORIUMI Fujio, HIRAYAMA Takatsugu, ENOKIBORI Yu, MASE Kenji
IEEJ Transactions on Electronics, Information and Systems   133(9) 1796-1805   Sep 2013
As a steady new network communication tool, Social Media has reached global propertion. This phenomenon gave impacts on societies of all over the world. Above all, people provide information to Twitter and Facebook on a daily basis. So that, vast ...
Hiroki Miura, Hirohiko Suwa, Fujio Toriumi, Makoto Onizuka
情報処理学会論文誌. データベース   6(3) 29-39   Jun 2013
In this paper we consider efficient algorithms for top-k personalized social search, in which a document score is synthesized from the relevancy to the query and social closeness between the searcher and the author of the document. Since the score...
Fujio Toriumi,Hitoshi Yamamoto,Isamu Okada
2013 IEEE/WIC/ACM International Conferences on Web Intelligence and Intelligent Agent Technology, Atlanta, Georgia, USA, 17-20 November 2013, Workshop Proceedings   114-117   2013   [Refereed]
Yuki Hirahara,Fujio Toriumi,Toshiharu Sugawara
2013 IEEE/WIC/ACM International Conferences on Web Intelligence and Intelligent Agent Technology, Atlanta, Georgia, USA, 17-20 November 2013, Workshop Proceedings   126-130   2013   [Refereed]
Kimitaka Asatani,Fujio Toriumi,Hirotada Ohashi,Mitsuteru Tashiro,Ryuichi Suzuki
PRIMA 2013: Principles and Practice of Multi-Agent Systems - 16th International Conference, Dunedin, New Zealand, December 1-6, 2013. Proceedings   396-404   2013   [Refereed]
Toriumi Fujio, Shinoda Kosuke, Sakaki Takeshi, Kurihara Satoshi, Kazama Kazuhiro, Noda Itsuki
Transactions of the Japanese Society for Artificial Intelligence   29(1) 113-119   2014
Traditionally, the support in the event of a disaster were based on hardware, the expertise are strongly required to rescuers. For this reason, in the case that the disaster had been occured, the role of the people expressly divided to the victims...
Remy Cazabet,Nargis Pervin,Fujio Toriumi,Hideaki Takeda
Ninth International Conference on Signal-Image Technology & Internet-Based Systems, SITIS 2013, Kyoto, Japan, December 2-5, 2013   483-490   2013   [Refereed]
ASATANI Kimitaka, TORIUMI Fujio, CHEN Yu, OHASHI Hirotada
The IEICE transactions on information and systems (Japanese edition)   96(12) 2951-2959   Dec 2013
Akihiro Koide, Kazumi Saito, Kazuhiro Kazama, Fujio Toriumi
6(2) 164-173   Aug 2013
In this paper, we explored Twitter's follow mechanism through a network analysis. In order to characterize the salient structure of Twitter's follow network, we first empirically compared it with those of reader and favorite networks form blog and...
山本仁志, 鳥海不二夫
人工知能学会誌   28(3) 397-404   May 2013
Fujio TORIUMI, Takashi OKADA, Shuichiro YAMAMOTO, and Kenichiro ISHII
SICE Journal of Control, Measurement, and System Integration   6(2)    Mar 2013   [Refereed]
Shohei Usui,Fujio Toriumi,Takatsugu Hirayama,Kenji Mase
International Conference on Social Computing, SocialCom 2013, SocialCom/PASSAT/BigData/EconCom/BioMedCom 2013, Washington, DC, USA, 8-14 September, 2013   905-908   2013   [Refereed]
Takeshi Sakaki,Fujio Toriumi,Kousuke Shinoda,Kazuhiro Kazama,Satoshi Kurihara,Itsuki Noda,Yutaka Matsuo
22nd International World Wide Web Conference, WWW '13, Rio de Janeiro, Brazil, May 13-17, 2013, Companion Volume   235-236   2013   [Refereed]
Fujio Toriumi,Takeshi Sakaki,Kousuke Shinoda,Kazuhiro Kazama,Satoshi Kurihara,Itsuki Noda
22nd International World Wide Web Conference, WWW '13, Rio de Janeiro, Brazil, May 13-17, 2013, Companion Volume   1025-1028   2013   [Refereed]
Usui Shohei, Toriumi Fujio, Hirayama Takatsugu, Enokibori Yu, Mase Kenji
IEEJ Transactions on Electronics, Information and Systems   133(9) 1796-1805   2013
As a steady new network communication tool, Social Media has reached global propertion. This phenomenon gave impacts on societies of all over the world. Above all, people provide information to Twitter and Facebook on a daily basis. So that, vast ...
SHINODA Kosuke, SAKAKI Takeshi, TORIUMI Fujio, KAZAMA Kazuhiro, KURIHARA Satoshi, NODA Itsuki, MATSUO Yutaka
Journal of Japan Society for Fuzzy Theory and Intelligent Informatics   25(1) 598-608   2013
The Great East Japan Earthquake caused devastating damage to infrastructure and loss of life. Many people used social media to communicate and share information through the series of earthquake events and aftershocks. We analyzed over 400 million ...
Yuasa Tatsuma, Toriumi Fujio, Hirayama Takatsugu, Enokibori Yu, Mase Kenji
IEEJ Transactions on Electronics, Information and Systems   133(9) 1717-1728   2013
The GARCH model is effective to describe the fluctuation process of financial price. It is a model to observe the non-uniform variance of time-series data of financial prices. However, definite theory to reveal how the GARCH effect is produced yet...
Fujio Toriumi, Hitoshi Yamamoto
IPSJ Journal   53(11) 2507-2515   Nov 2012
In this paper, we propose the General public goods game to represents human behaviors on the social media. The structures of social media are modeled to clarify the mechanism to participate to social media. We developed a simulation model to clari...
Toriumi Fujio, Ishii Kenichiro
Transactions of the Japanese Society for Artificial Intelligence   27(6) 346-354   Oct 2012
The concept of the ``wisdom of crowds'' has attracted attention for finding new insights by appropriately processing the large amount of information possessed by crowds. A prediction market is one estimating method that uses the mechanisms of fina...
53(9) 898-903   Sep 2012
鳥海不二夫, 篠田孝祐, 兼山元太
情報処理学会デジタルプラクティス   3(3) 201-208   Jul 2012
本論文は,東日本大震災時に投稿された数多くの情報の中から,デマ情報を判別する目的で作成されたWEBアプリケーション「でまったー」についてその判定精度分析を行う.これによって,ソーシャルメディアを用いたデマの判定が可能かどうかを明らかにする.判定精度分析には,東日本大震災時にTwitterに投稿された約3億のTweetを利用し,デマ情報と真の情報が正しく分類できたかを確認した.その結果,利用したアルゴリズムによって81.7%の精度でデマ情報を判定可能であることを確認した.
INABA Michimasa, HIRAI Naoki, TORIUMI Fujio, ISHII Kenichiro
95(6) 1390-1400   Jun 2012
INABA Michimasa, HIRAI Naoki, TORIUMI Fujio, ISHII Kenichiro
The IEICE transactions on information and systems (Japanese edetion)   95(6) 1390-1400   Jun 2012
Toriumi Fujio, Nishiok Hirokazu, Umeoka Toshimits, Ishii Kenichiro
Transactions of the Japanese Society for Artificial Intelligence   27(3) 143-150   2012
The financial markets are fluctuating consistently. Therefore, it is difficult to analyze the financial market based on the same theory, without depending on the state of the market. So we use the concept ofmarket condition change. To estimate the...
Fujio Toriumi,Hitoshi Yamamoto,Isamu Okada
2012 IEEE/WIC/ACM International Conferences on Intelligent Agent Technology, IAT 2012, Macau, China, December 4-7, 2012   43-50   2012   [Refereed]
TORIUMI Fujio, KAMIYA Tatsuyuki, ISHII Kenichiro
The IEICE transactions on information and systems (Japanese edetion)   94(11) 1740-1750   Nov 2011
YAMAMOTO Hitoshi, SUWA Hirohiko, OKADA Isamu, TORIUMI Fujio, IZUMI Kiyoshi, HASHIMOTO Yasuhiro
23(1) 33-43   Sep 2011
This paper focuses on transition of users communication structures in social network services (SNSs) and we derived some features of life cycle of SNSs. We extracted some factors in characteristics of communications statistically. They are, for ex...
INABA Michimasa, TORIUMI Fujio, ISHII Kenichiro
The IEICE transactions on information and systems (Japanese edetion)   94(1) 59-67   Jan 2011
INABA Michimasa, TORIUMI Fujio, ISHII Kenichiro
The IEICE transactions on information and systems (Japanese edetion)   94(1) 48-58   Jan 2011
Michimasa Inaba,Fujio Toriumi,Kenichiro Ishii
2011 IEEE Workshop on Affective Computational Intelligence, WACI 2011, Paris, France, April 14, 2011   55-61   2011   [Refereed]
TORIUMI Fujio, ISHIDA Ken, ISHII Kenichiro
The IEICE transactions on information and systems (Japanese edetion)   93(7) 1135-1143   Jul 2010
FUJITA Yukihisa, TORIUMI Fujio, ISHII Kenichiro
Journal of Japan Society for Fuzzy Theory and Intelligent Informatics   22(2) 165-177   Apr 2010
Because of the recession of recent years, as an urgent step, firms adopt many strategies to cut costs. Therefore, introducing “work sharing” is suggested to cut costs. To propose “work sharing” which aims to keep temporary employees, it is importa...
Megumi Tanaka, Kensuke Takahashi, Fujio Toriumi, Toshiharu Sugawara
3(1) 98-108   Jan 2010
We investigated the effect of a number of anti-bullying methods by teachers using the multi-agent simulation. Although bullying is a serious problem in school nowadays, the effective anti-bullying method is not established well. In addition, it re...
Yukihisa Fujita, Yuichi Washida, Fujio Toriumi, Kazuhiro Ueda, Kenichiro Ishii
3(1) 49-61   Jan 2010
Recently, with the advance of information technologies, the amount of available information has increased exponentially. It has a great influence on individual acts because information is quite important for decision making and value judgment. It ...
Toriumi Fujio, Yamamoto Hitoshi, Suwa Hirohiko, Okada Isamu, Izumi Kiyoshi, Hashimoto Yasuhiro
Transactions of the Japanese Society for Artificial Intelligence   25(1) 78-89   2010
In recent years, application of Social Networking Services (SNS) and Blogs are growing as new communication tools on the Internet. Several large-scale SNS sites are prospering; meanwhile, many sites with relatively small scale are offering service...
Yukihisa Fujita,Yuichi Washida,Fujio Toriumi,Kazuhiro Ueda,Kenichiro Ishii
9th International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2010), Toronto, Canada, May 10-14, 2010, Volume 1-3   1543-1544   2010   [Refereed]
ISOMURA Naoki, TORIUMI Fujio, ISHII Kenichiro
The Transactions of the Institute of Electronics, Information and Communication Engineers. A   92(11) 795-805   Nov 2009
Izumi Kiyoshi, Toriumi Fujio, Matsui Hiroki
Journal of Japanese Society for Artificial Intelligence   24(3) 408-415   May 2009
Oya Tomoyasu, Nakayama Shinichiro, Toriumi Fujio
Journal of Japanese Society for Artificial Intelligence   24(3) 385-391   May 2009
ISOMURA Naoki, TORIUMI Fujio, ISHII Kenichiro
The IEICE transactions on information and systems (Japanese edetion)   92(4) 542-551   Apr 2009
Kiyoshi Izumi,Fujio Toriumi,Hiroki Matsui
Neurocomputing   72(16-18) 3469-3476   2009   [Refereed]
IZUMI Kiyoshi, TORIUMI Fujio, MATSUI Tohgoroh
Journal of Japan Society for Fuzzy Theory and Intelligent Informatics   20(4) 609-615   Aug 2008
TORIUMI Fujio, ISHIDA Ken, ISHII Kenichiro
The transactions of the Institute of Electronics, Information and Communication Engineers. B   91(4) 397-406   Apr 2008
TORIUMI Fujio, KOBAYASHI Akira, TAKAYAMA Jun-ya, OHYAMA Shinji
43(10) 839-846   Oct 2007
TORIUMI Fujio, ISHII Kenichiro
The IEICE transactions on information and systems (Japanese edetion)   90(9) 2456-2464   Sep 2007
FUJITA Yukihisa, NAKASE Akihiko, NAKAYAMA Yasuko, TORIUMI Fujio, ISHII Kenichiro
The IEICE transactions on information and systems (Japanese edetion)   90(1) 52-61   Jan 2007
TORIUMI Fujio, TAKAYAMA Jun-ya, OHYAMA Shinji, KOBAYASHI Akira
39(8) 709-716   Aug 2003
TORIUMI Fujio, CAO Li, OHYAMA Shinji, KOBAYASHI Akira
37(9) 886-892   Sep 2001

Misc

 
Toriumi Fujio
journal of the Japanese Society for Artificial Intelligence   30(6)    Nov 2015
篠田孝祐, 片上大輔, 稲葉通将, 鳥海不二夫, 大澤博隆, 松原仁
人工知能学会言語・音声理解と対話処理研究会資料   75th 80-85   Oct 2015
田代光輝, 田代光輝, 小松正, 江口清貴, 鳥海不二夫, 中西崇文
情報処理学会研究報告(Web)   2015(EIP-69) VOL.2015-EIP-69,NO.12 (WEB ONLY)   Sep 2015
大澤博隆, 栢野航, 片上大輔, 鳥海不二夫, 稲葉通将, 篠田孝祐
電子情報通信学会技術研究報告   115(118(CNR2015 1-5)) 11-14   Jun 2015
池田圭佑, 岡田佳之, 榊剛史, 鳥海不二夫, 風間一洋, 野田五十樹, 諏訪博彦, 篠田孝祐, 栗原聡
情報処理学会研究報告(Web)   2015(ICS-178) VOL.2015-ICS-178,NO.14 (WEB ONLY)-6   Feb 2015
Ishii A., Koyabu T., Sakaki T., Toriumi F., Uchiyama K., Usui T.
日本物理学会講演概要集   70(1)    Mar 2015
篠田 孝祐, 鳥海 不二夫, 片上 大輔
人工知能学会全国大会論文集   28 1-3   2014
鳥海不二夫
組織科学   48(4) 47-59   Jun 2015
大阪健吾, 平原悠喜, 鳥海不二夫, 菅原俊治
情報処理学会研究報告(Web)   2015(ICS-178) VOL.2015-ICS-178,NO.12 (WEB ONLY)   Feb 2015
石井晃, 小籔拓馬, 北尾明子, 鳥海不二夫, 榊剛史, 榊剛史, HORI Chie, MOGI Akitoshi
情報処理学会研究報告(Web)   2015(ICS-178) VOL.2015-ICS-178,NO.10 (WEB ONLY)   Feb 2015
Toriumi Fujio, Sakaki Takeshi, Okazaki Naoki
journal of the Japanese Society for Artificial Intelligence   29(2) 172-181   Mar 2014
TORIUMI Fujio, SHINODA Kosuke, KURIHARA Satoshi, SAKAKI Takeshi, KAZAMA Kazuhiro, NODA Itsuki
112(94) 19-24   Jun 2012
TORIUMI Fujio, SHINODA Kosuke, KURIHARA Satoshi, SAKAKI Takeshi, KAZAMA Kazuhiro, NODA Itsuki
IEICE technical report. Artificial intelligence and knowledge-based processing   112(94) 19-24   Jun 2012
In this paper, we analyzed the 400 millions of Tweet data which posted around the Great East Japan Earthquake to find how the twitter used and how the Twitter was influenced by the disaster. We modeled the time series data of Retweet by Gaussian M...
Koide Akihiro, Takahashi Tomomi, Saito Kazumi, Kazama Kazuhiro, Toriumi Fujio
11(2) 309-310   Sep 2012
ISHIHARA Hiroki, SUWA Hirohiko, TORIUMI Fujio, OHTA Toshizumi
2012 195-198   Sep 2012
Using tweets extracted from Twitter during the Great Eastern Japan Earthquake 2011, social network analysis techniques were used to generate and analyse the online networks that emerged at that time. People attempted to collect information about e...
MIURA Hiroki, SUWA Hirohiko, TORIUMI Fujio, ONIZUKA Makoto
2012 279-282   Sep 2012
In this paper we consider the situation that using a social search. Recent emergence of social media demands many users enjoy reading the social media generated by their friends or by people who are close to them in the social network. Additinaly,...
ISHIHARA Hiroki, SUWA Hirohiko, TORIUMI Fujio, OHTA Toshizumi
IEICE technical report. Data engineering   112(346) 87-92   Dec 2012
Using tweets extracted from Twitter during the Great East Japan Earthquake 2011, social network analysis techniques were used to generate and analysis the online networks that emerged at that time. People attempted to collect information about ear...
ASATANI Kimitaka, OHASHI Hirotada, TORIUMI Fujio, Chen YU
IEICE technical report. Artificial intelligence and knowledge-based processing   112(477) 61-66   Mar 2013
In modern society, culture is formed by individuals who sift through the surrounding culture by some criteria. Mathematical model is constructed assuming that the individual value by which it adopts surrounding information has a significant effect...
UMEOKA Toshimitsu, TORIUMI Fujio, HIRAYAMA Takatsugu, ENOKIBORI Yu, MASE Kenji
IEICE technical report. Artificial intelligence and knowledge-based processing   112(477) 67-72   Mar 2013
Since Lehman Crisis, studies to deal with financial market stabilization have come under the spotlight. As one of the financial theories, there is the concept of phase transition which is the analogy of a thermodynamic system from one phase or sta...
Yamamoto Hitoshi, Toriumi Fujio
Journal of Japanese Society for Artificial Intelligence   28(3) 397-404   May 2013
川口大貴, 松本慎平, 鳥海不二夫
電気・情報関連学会中国支部連合大会講演論文集(CD-ROM)   64th 254-255   Oct 2013
榎本光, 内田理, 鳥海不二夫
情報科学技術フォーラム講演論文集   12th 649-650   Aug 2013
平原悠喜, 鳥海不二夫, 菅原俊治
情報科学技術フォーラム講演論文集   12th 355-360   Aug 2013
六瀬聡宏, 長島俊, 内田理, 鳥海不二夫
情報科学技術フォーラム講演論文集   12th 651-652   Aug 2013
小出明弘, 斉藤和巳, 風間一洋, 鳥海不二夫
情報処理学会研究報告(CD-ROM)   2012(6) ROMBUNNO.ICS-170,NO.6   Apr 2013
OGAWA YUKI, NODA ITSUKI, YAMAMOTO HITOSHI, GOTO SHINTARO, WASAKI HIROSHI, GOMI SOHEI, TORIUMI FUJIO
情報処理学会研究報告(CD-ROM)   2012(6) ROMBUNNO.ICS-170,NO.7   Apr 2013
須田剛裕, 小嶋和徳, 伊藤慶明, 石亀昌明, 鳥海不二夫
情報処理学会全国大会講演論文集   75th(3) 3.99-3.100   Mar 2013
UMEOKA TOSHIMITSU, TORIUMI FUJIO, HIRAYAMA TAKATSUGU, ENOKIBORI YU, MASE KENJI
電子情報通信学会技術研究報告   112(477(AI2012 41-52)) 67-72   Mar 2013
牧野龍彦, 鳥海不二夫, CHEN Yu, 大橋弘忠
人工知能学会知識ベースシステム研究会資料   98th 27-32   Mar 2013
Yuki Ogawa, Itsuki Noda, Hitoshi Yamamoto, Shintaro Goto, Hiroshi Wasaki, Sohei Gomi, Fujio Toriumi
IPSJ SIG Notes. ICS   2013(7) 1-5   Mar 2013
In this study, in order to clarify differences in topics between social media at the time of earthquake, we conduct a cluster analysis of articles posted on Twitter and local SNS to extract topics and analyze differences in topics between media an...
Hiroki Ishihara, Hirohiko Suwa, Fujio Toriumi, Toshizumi Ohta
IPSJ SIG Notes   2012(14) 1-6   Dec 2012
Using tweets extracted from Twitter during the Great East Japan Earthquake 2011, social network analysis techniques were used to generate and analysis the online networks that emerged at that time. People attempted to collect information about ear...
Toriumi Fujio
Journal of Japanese Society for Artificial Intelligence   27(6)    Nov 2012
OKADA Isamu, ENDO Kaoru, SATO Tetsuya, TORIUMI Fujio, YAMAMOTO Hitoshi, MIZUNO Makoto, TERANO Takao, OHTA Toshizumi
23(2) 65-80   Mar 2012
KOIDE Akihiro, SAITO Kazumi, TORIUMI Fujio, KAZAMA Kazuhiro
IEICE technical report. Natural language understanding and models of communication   111(427) 37-42   Jan 2012
In this paper, as the first step to construct user models on Twitter, we focus on the high degree users who are considered as main rule players in Twitter's follow network, and we analyze the relation among these high degree users based on a follo...
17(0) 161-166   Jan 2011
Toriumi Fujio
Journal of Japanese Society for Artificial Intelligence   25(4) 557-558   Jul 2010
IZUMI Kiyoshi, HASHIMOTO Yasuhiro, TORIUMI Fujio, YAMAMOTO Hitoshi, SUWA Hirohiko, OKADA Isamu
IEICE technical report. Artificial intelligence and knowledge-based processing   109(211) 13-18   Sep 2009
Using decision tree analysis, we analyzed the growth of 1,200 active SNSs in So-net SNS (beta version). As a result, we could find a decision rule to distinguish rapidly growing SNSs in coming 3 months. Moreover, variable about network structures ...
TORIUMI Fujio, ISHII Kenichiro
IEICE technical report. Artificial intelligence and knowledge-based processing   109(211) 49-54   Sep 2009
In this paper, we proposed analytical method converting command sequential to task on log data of robocup rescue simulation. Our method used Viterbi algorithm based on the pattern occurrence probability and the pattern transition probability as th...
Yukihisa Fujita, Yuichi Wasida, Fujio Toriumi, Kazuhiro Ueda, Kenichiro Ishii
IPSJ SIG Notes   2009(6) 1-6   Sep 2009
Recently, with the advance of information technologies, the amount of available information has increased exponentially. It has been shown in many studies that the increase in information brings the enhancement of decision-making ability. However,...
Michimasa Inaba, Fujio Toriumi, Kenichiro Ishii
IPSJ SIG Notes   2009(18) 1-6   Sep 2009
Recently, computerized dialogue systems have been actively investigated in various fields. However, There are few researches on the systems to talk with a human, and there are no systems that can make an intellectual reply. In order to realize a p...
85(0) 63-68   Mar 2009
YAMAGUCHI Ryuichi, TORIUMI Fujio, ISHII Kenichiro
IPSJ SIG Notes. ICS   2009(16) 69-74   Feb 2009
Recently, Social Networking Services (SNS) have become a social phenomenon on the Internet. There are many small SNSs, including campus SNSs, company SNSs, and local area SNSs. However. there are few SNS utilized effectively. Our goal is to encour...
INABA Michimasa, ISOMURA Naoki, TORIUMI Fujio, ISHII Kenichiro
IPSJ SIG Notes. ICS   2009(16) 29-34   Feb 2009
Recently, computerized dialogue systems have been actively investigated and used in various fields. However, There are few researches of the systems to talk with a human, and there are no systems that can make an intellectual reply. In this paper,...
INABA Michimasa, ISOMURA Naoki, TORIUMI Fujio, ISHII Kenichiro
IEICE technical report. Artificial intelligence and knowledge-based processing   108(456) 29-34   Feb 2009
Recently, computerized dialogue systems have been actively investigated and used in various fields. However, There are few researches of the systems to talk with a human, and there are no systems that can make an intellectual reply. In this paper,...
YAMAGUCHI Ryuichi, TORIUMI Fujio, ISHII Kenichiro
IEICE technical report. Artificial intelligence and knowledge-based processing   108(456) 69-74   Feb 2009
Recently, Social Networking Services (SNS) have become a social phenomenon on the Internet. There are many small SNSs, including campus SNSs, company SNSs, and local area SNSs. However. there are few SNS utilized effectively. Our goal is to encour...
83(0) 17-22   Nov 2008
TORIUMI Fujio, ISHIDA Ken, ISHII Kenichiro
IEICE technical report. Artificial intelligence and knowledge-based processing   108(208) 33-38   Sep 2008
In this paper, we analyze the network, structure of a regional SNS. From the viewpoint of network topology, the major characteristics of the data sets can be summarized as follows: low average shortest-path length, high clustering coefficient, pre...
Izumi Kiyoshi, Matsui Hiroki, Toriumi Fujio
70(5) "5-83"-"5-84"   Mar 2008
FUJITA Yukihisa, TORIUMI Fujio, ISHII Kenichiro
IPSJ SIG Notes. ICS   2008(20) 73-78   Mar 2008
Recently, the number of temporary employees in organizations has increased. By hiring temporary employees, organizations can save labor costs. On the other hand, knowledge or experiences are not accumulated in the organization because they leave t...
IZUMI Kiyoshi, TORIUMI Fujio, MATSUI Hiroki
IPSJ SIG Notes. ICS   2008(20) 103-107   Mar 2008
In this paper, we proposed an evaluation system of automated trading programs using artificial market simulation. First, our system tested the market impact of automated trading programs. The results revealed that a market impact of an automated t...
FUJITA Yukihisa, TORIUMI Fujio, ISHII Kenichiro
IEICE technical report. Artificial intelligence and knowledge-based processing   107(523) 73-78   Feb 2008
Recently, the number of temporary employees in organizations has increased. By hiring temporary employees, organizations can save labor costs. On the other hand, knowledge or experiences are not accumulated in the organization because they leave t...
IZUMI Kiyoshi, TORIUMI Fujio, MATSUI Hiroki
IEICE technical report. Artificial intelligence and knowledge-based processing   107(523) 103-107   Feb 2008
In this paper, we proposed an evaluation system of automated trading programs using artificial market simulation. First, our system tested the market impact of automated trading programs. The results revealed that a market impact of an automated t...
IZUMI Kiyoshi, MATSUI Hiroki, TORIUMI Fujio
IEICE technical report. Artificial intelligence and knowledge-based processing   107(383) 7-10   Dec 2007
This paper proposed a system to which a user can create new services using market simulation freely by modularization of artificial market simulation, aiming at the emergence using the pricing mechanism of the market of new service.
KUREISHI Kei, TORIUMI Fujio, ISHII Kenichiro
Technical report of IEICE. Multimedia and virtual environment   107(360) 37-42   Nov 2007
One of the serious problems in developing a character recognition system is designing a recognition dictionary which requires a tremendous amount of character data for training. A traning set, however, contains only limited variations of character...
KUREISHI Kei, TORIUMI Fujio, ISHII Kenichiro
Technical report of IEICE. PRMU   107(359) 37-42   Nov 2007
One of the serious problems in developing a character recognition system is designing a recognition dictionary which requires a tremendous amount of character data for training. A traning set, however, contains only limited variations of character...
ISOMURA Naoki, TORIUMI Fujio, ISHII Kenichiro
IEICE technical report. Natural language understanding and models of communication   107(246) 1-6   Sep 2007
Recently, computerized dialogue systems are researched and used in various fields. In order to realize a practical system, the performance should be evaluated quantitatively. The objective and quantitative evaluation method for dialogue systems fo...
Ishida Ken, Toriumi Fujio, Ishii Kenichiro
6(2) 343-346   Aug 2007
Hara Taiyo, Toriumi Fujio, Ishii Kenichiro
6(2) 401-402   Aug 2007
TORIUMI Fujio, NISHIMURA Kei, ASANO Chihiro, ISHII Kenichiro
IPSJ SIG Notes. ICS   2007(26) 67-74   Mar 2007
Recently, automatical trading agents are received attention from traders. However, it is hard to develop them for individual investors who have little programming skills. Thus, we proposed a support system for trading agents design for "Super kabu...
Nishimura Kei, Toriumi Fujio, Asano Chihiro, Muraoka Yoichi
IPSJ SIG Notes. ICS   2007(26) 75-80   Mar 2007
This paper describes a "Kaburobo" that enables users to specifically and easily create an automated stock trading program, a Kaburobo development kit, a Kaburobo contest that combines high-grade Kaburobo creators and financiers, and a Kaburobo pla...
Nishimura Kei, Toriumi Fujio, Asano Chihiro, Muraoka Yoichi
IEICE technical report. Artificial intelligence and knowledge-based processing   106(586) 9-14   Mar 2007
This paper describes a "Kaburobo" that enables users to specifically and easily create an automated stock trading program, a Kaburobo development kit, a Kaburobo contest that combines high-grade Kaburobo creators and financiers, and a Kaburobo pla...
TORIUMI Fujio, NISHIMURA Kei, ASANO Chihiro, ISHII Kenichiro
IEICE technical report. Artificial intelligence and knowledge-based processing   106(586) 15-22   Mar 2007
Recently, automatical trading agents are received attention from traders. However, it is hard to develop them for individual investors who have little programming skills. Thus, we proposed a support system for trading agents design for "Super kabu...
ISOMURA Naoki, TORIUMI Fujio, ISHII Kenichiro
IEICE technical report. Natural language understanding and models of communication   106(298) 39-44   Oct 2006
Recently, computerized dialogue systems are researched and used in various fields. In order to realize a practical system, the performance should be evaluated quantitatively. The objective and quantitative evaluation method for dialogue systems fo...
ISOMURA Naoki, TORIUMI Fujio, ISHII Kenichiro
Technical report of IEICE. Thought and language   106(296) 39-44   Oct 2006
Recently, computerized dialogue systems are researched and used in various fields. In order to realize a practical system, the performance should be evaluated quantitatively. The objective and quantitative evaluation method for dialogue systems fo...
ISOMURA Naoki, TORIUMI Fujio, ISHII Kenichiro
Technical report of IEICE. PRMU   106(300) 57-62   Oct 2006
Recently, computerized dialogue systems are researched and used in various fields. In order to realize a practical system, the performance should be evaluated quantitatively. The objective and quantitative evaluation method for dialogue systems fo...
KUREISHI Kei, TORIUMI Fujio, ISHII Kenichiro
IPSJ SIG Notes. CVIM   2006(93) 249-256   Sep 2006
Old Go match data is very useful to learn good or bad moves. For this reason, it is hoped to create a Kifu database. However, it is difficult to input them manually. Thus, we propose an automatic recognizer of Kifu, in order to form a Kifu databas...
KUREISHI Kei, TORIUMI Fujio, ISHII Kenichiro
Technical report of IEICE. PRMU   106(230) 115-122   Sep 2006
Old Go match data is very useful to learn good or bad moves. For this reason, it is hoped to create a Kifu database. However, it is difficult to input them manually. Thus, we propose an automatic recognizer of Kifu, in order to form a Kifu databas...
FUJITA Yukihisa, NAKASE Akihiko, NAKAYAMA Yasuko, TORIUMI Fujio, ISHII Kenichiro
IPSJ SIG Notes. ICS   2006(2) 77-82   Jan 2006
A variety of knowledge sharing methods have been proposed based on experience and precedents. However, the effects of those methods are not quantitatively investigated. This study proposes knowledge sharing model in organizations to analyze the ef...
FUJITA Yukihisa, NAKASE Akihiko, NAKAYAMA Yasuko, TORIUMI Fujio, ISHII Kenichiro
IEICE technical report. Artificial intelligence and knowledge-based processing   105(510) 29-34   Jan 2006
A variety of knowledge sharing methods have been proposed based on experience and precedents. However, the effects of those methods are not quantitatively investigated. This study proposes knowledge sharing model in organizations to analyze the ef...
Sogabe Masayoshi, Toriumi Fujio, Ishii Kenichiro
IPSJ SIG Notes   2005(117) 105-110   Nov 2005
Recently, computerized dialog systems using natural language are highly expected. The system's performance should be evaluated objectively and quantitatively. The objective and quantitative evaluation method for the taskoriented dialog system has ...
鳥海 不二夫, 島本 好平, 高山 潤也
センシングフォ-ラム資料   20 377-382   Sep 2003
TORIUMI F., TAKAYAMA J., OHYAMA S., KOBAYASHI A.
18(0) 59-63   Oct 2001
TORIUMI F., OHYAMA S., KOBAYASHI A.
17(0) 19-23   Oct 2000

Conference Activities & Talks

 
河津裕貴, 鳥海不二夫, 高野雅典, 和田計也, 福田一郎
情報処理学会研究報告(Web)   1 Mar 2016   
片上 大輔, 小林 優, 鳥海 不二夫
ファジィシステムシンポジウム講演論文集   2 Sep 2015