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The University of Electro-Communications  Graduate School of Informatics and Engineering, School of Informatics and Engineering  Department of Computer and Network Engineering, Cluster I （Informatics and Computer Engineering)

Professor  TADASHI　OHMORI  Year of birth:1962   Personal website

■ Career Graduate school of Information Systems, Univ. Electro-Communications  Professor  2010/04/01-Present    ■ Academic background The University of Tokyo  Graduate School, Division of Engineering  Information Engineering Course  Doctoral program  1990/03  Completed  The University of Tokyo  Graduate School, Division of Engineering  Information Engineering Course  Master's program  1987/03  Completed  The University of Tokyo  Faculty of Engineering  Dept. Electrical Engineering  1985/03  Graduated    ■ Academic degrees Doctor of Engineering  The University of Tokyo  1990/03    ■ Outlines of current research data engineering and algorithmic issues for new ability, concepts, realization of innovative data environments utilizing massive data.    ■ Classes responsible within the university 2017  Principles of Data Engineering 2  Spring semester  Both graduate schools, IE and IS  Master's and doctoral programs  Subject in specialty  2017  Technical English of Graduate-School Level  Spring semester  Graduate, IE  Master's program  Other  2017  Algorithm　I  Spring semester  Undergraduate, daytime  Subject in specialty  2017  Theory of Algorithms, I  Fall semester  Undergraduate, daytime  Subject in specialty  2017  Principles of Data Engineering (special program)  Fall semester  Graduate, IE  Other  View details...   ■ Current research areas Multimedia database  Theory of informatics  Computer system  Software    ■ Research keywords New Query Ability and Algorithmic issues in Data Engineering  Algorithms, Concepts, and System algorithms for New Data Platforms  Algorithmic issues of New Query Ability and Information Extraction from Massive Data    ■ Current research subjects data engineering/database researches and algorithmic issues in new massive data.  1987/04-Present  Bulk-Access Transactions on Parallel Database Engines and a study for new data-platform system abilities.  1990/03-Present  Advanced Query Abilities over VLDB with Efficient Algorithms.  Novel Query Ability with Efficient Algorithms.  1990/03-Present  A Study on a Multi-Dimensional Web-Structure Mining System on a basis of a Multi-Dimensional Data-Cube Model.  2005/04-2012/03  (科研基盤Ｃ）  Simulation of Multi-Agent Systems by using Very Large Database.  1994/04-1998/03  A Study on Models and Algorithms for Massive Log Data Analysis  系列データ, 情報構造抽出．  2005/04-2007/03  (科研基盤Ｃ)  A Study on Keyword Search over Structured Data and Graph Databases  keyword search, hybrid XML-Relational database, Graph database, graph enumeration algorithms  2008/04-2011/03    ■ Published books Book, translated  J.Gray, A.Reuter,"Transaction Processing: the concept and techniques", MorganKaufmann Pub.  M.Kitsuregawa, Tadashi Ohmori, and 7 translators  Nikkei BP  277-452  2001  Book, dictionary  Handbook of Artificial Intelligence  Masaru KITSUREGAWA, Tadashi OHMORI  Japan Society of Artificial Intelligence  1990  View details...   ■ Published papers Paper  Yes  A New Efficient Algorithm for m-Closest Spatial Keyword Search by using Priority Control and Tight Lower-Bound  Joint  Yuan Qiu, Tadashi Ohmori, Takahiko Shintani, Hideyuki Fujita  IEICE Transaction, Vol. D (to appear)  99-D/ 7, 638-651  2016/04/01  Paper  Yes  Design and Evaluation of the Database System IDPS-DB on the Intellectual Distributed Processing System IDPS  Shuji HARASHIMA, Tadashi OHMORI  Transactions of IEICE, Japan, Series D.  Vol.J96-D/ No.10, 2274-2285  2013/10  Paper  Yes  A Hybrid Hash Join Algorithm using Bucket Regrouping on MapReduce  Shigeo HIROSE, Tadashi OHMORI, Takahiko SHINTANI  Journal of the DBSJ  Vol.12/ No.1, 61-66  2013/06  Paper  Yes  Keyword Search on both XML and Relational Data  Liru Zhang, Tadashi Ohmori, Mamoru Hoshi  Journal of Communication and Computer (ISSN1548-7709, USA)  8/ 4, 264-275  2011/04  Paper  Yes  A Report on Implementation of a Multi-Dimensional Web-Mining System  Daisuke KURIHARA, Tadashi OHMORI, Mamoru HOSHI  Journal of the DBSJ  7/ 1, 25-30  2008/07  View details...   ■ Research presentations Symposium  A New Search Strategy for m-Closest Keywords Query by using Dynamically-Created Grid-Partitioning over Spatial Datasets  Int'l Symposium on Cartoraphy in Internet and Ubquitous Environments 2015  Yes  Y.Qiu, H.Zhai, A.H.Dang, T.Ohmori, H.Fujita, T.Shintani  2015/03/18  Symposium  A New Load-Distribution Algorithm for Efficient Edit-Distance Join on MapReduce  DEIM2015  No  Atsuhito KONNO, Tadashi OHMORI, Takahiko SHINTANI  2015/03/03  Symposium  m-Closest Keyword Search over Spatial Data by using 2^n-split tree  DEIM 2013  No  Qiu, T.Ohmori, T.Shintani  2013/03  Symposium  Hybrid-Hash Join Algorithm with Bucket Regrouping on Map/Reduce  DEIM 2013  No  Shigeo HIROSE, T.Ohmori, T.Shintani  2013/03  Symposium  A Study on Classification and Recommendation of Keyword Search Answers over Graph Databases  WebDB forum 2012  Yes  Yinshi JIN, Tadashi OHMORI  2012/11  View details...   ■ Awards FIT forum 2012 paper award  An Application of Generalized R-trees to Massive Data Archive Systems  2002/09/30  IEICE Society of Information and Systems Contribution Award  2005/03/23  Student Paper award  A Report on Exact Top-K Keyword Search with Redundancy Elimination on Graph Databases  2010/11/13  Session Presentation Award  A New Hybrid-Hash Join Algorithm on MapReduce platforms by using Bucket Regrouping Strategy  2013/03/05  Student presentation award  A new algorithm of m-closest keywords query over spatial data  2014/03/13  View details...   ■ Grants-in-aid for scientific research A Research on Efficient Algorithms for Creating information-Spaces on Massive-Data Systems.  Scientific research (C), general  2012/04/01-2016/03/31  A Study on Database Systems for Multi-Dimensional Web Mining  Scientific research (C), general  2009/04/01-2012/03/31  データ管理システムのログデータ分析方式に関する研究  Scientific research (C), general  2005/04/01-2007/03/31  View details...   ■ Past records of joint or funded research イベントデータの利用技術に関する研究  2001-2001  Research commissioned by a company  WEBマイニングに関する研究  2001-2001  Funded commissioned research  イベントログデータの利用技術に関する研究  2002-2002  Research commissioned by a company  イベントログデータの利用に関する研究  2003-2003  Research commissioned by a company  View details...   ■ Memberships of academic societies 電子情報通信学会  1987-Present  情報処理学会  1985-Present  IEICE Technical Committee of Data Engineering  1987-Present  ACM SIGMOD Japan Chapter  1998-Present  ACM  1998-Present  View details...   ■ Committee or council involvement DEIM(データ工学と情報マネジメントフォーラム）プログラム委員  DEIMプログラム編成委員  2013/03-Present  ACM SIGMOD Japan chapter  vice chief editor  2011/06-2015/06  Trans. IEICE of Japan, D division, editors of special issues on data engineering, 2008-2009.  論文誌データ工学特集号編集幹事  2008/05-2010/02  情報処理学会  データベースシステム研究会論文誌ＴＯＤ編集委員  2003/04-2011/03  ACM SIGMOD Japan Chapter  SIGMOD日本支部書記・幹事  1999-2002  View details...   ■ Committee activity in the University IS進路委員会・委員長  委員長  2015/12-2016/12  IS教務委員会・改組対応教務委員会  委員  2015/04-2016/03  IS教務委員会（改組対応教務委員含む）  委員長（IS側）  2014/04-2015/03  IS入試委員会  委員長  2013/04-2014/03  View details...