日本語
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 
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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-Platform Systems 
Algorithmic issues of New Query Ability and Information Extraction from Massive Data 

Current research subjects
New query and information-extraction ability in data engineering/database researches: design, algorithmic issues, modeling, and implementation.  1987/04-Present 
New algorithms and system issues in new data platforms  database algorithm, consistency, concurrency  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 
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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 
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Research presentations
Symposium  位置・方向情報付写真群を用いた空間を要約する経路の作成  DEIMフォーラム2016  H5-4  No  相楽翔太,藤田秀之,大森匡,新谷隆彦  2016/03/01 
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 
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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 
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Grants-in-aid for scientific research
A Research on Efficient Algorithms for Creating information-Spaces on Massive-Data Systems.  2012/04/01-2016/03/31 
A Study on Database Systems for Multi-Dimensional Web Mining  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  2005/04/01-2007/03/31 
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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 
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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 
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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 
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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 
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