Hiroki Arimura

J-GLOBAL         Last updated: Oct 23, 2017 at 03:32
 
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Name
Hiroki Arimura
Nickname
Hiroki.Arimura
URL
http://www-ikn.ist.hokudai.ac.jp/~arim/publication.html
Affiliation
Hokkaido University
Section
Graduate School of Information Science and Technology Division of Computer Science
Job title
Professor
Degree
Dr. Sci.(Kyushu University)
Other affiliation
NII
ORCID ID
0000-0002-2701-0271

Profile

Hiroki Arimura is a Professor in the Graduate School of Information Science and Technology of Hokkaido University. After receiving his PhD from Kyushu University in Computer Science in 1994, his primary interests has been in data mining, information retrieval, machine learning, algorithms and data structures, and their applications. He has served on the program committees of a number of international conferences including PAKDD, DS, ALT, PKDD, KDD and others. He was the director of the Global COE (Centers of Excellence) Program of "Center for Next-Generation Information Technology Based on Knowledge Discovery and Knowledge Federation" at Hokkaido University by MEXT (Ministry of Education, Culture, Sports, Science and Technology of Japan) for 2007-2011.

Research Areas

 
 

Academic & Professional Experience

 
Apr 2016
 - 
Today
director, Global Station for Big Data and Cybersecurity
 
Jan 2008
 - 
Today
Adjunct professor, National Institute of Informatics
 
Apr 2004
 - 
Today
Professor, Graduate School of Information Science and Technology, Hokkaido University
 
Apr 2015
 - 
Mar 2017
leader (director), Hokkaido University Collaborative Project Center, Knowledge Media Laboratory
 
Apr 2013
 - 
Mar 2015
director, Hokkaido University, Knowledge Media Laboratory
 
Apr 1996
 - 
Mar 2004
Associate Professor, Graduate School of Information Science and Electrical Engineering, Kyushu University
 
Apr 2002
 - 
Mar 2003
Adjunct associate professor, Computing Center/Reseach Institute of Information Technology, Kyushu University
 
Apr 2001
 - 
Mar 2002
Adjunt associate professor, University Library, R&D division, Kyushu University
 
Oct 1999
 - 
Mar 2002
Adjunct researcher, "Information and Intelligence, JST PRESTO
 
Apr 1995
 - 
Mar 1996
Associate Professor, Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology
 
Apr 1994
 - 
Mar 1995
Lecturer, Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology
 
Apr 1990
 - 
Mar 1994
Research associate (Associate professor), Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology
 

Education

 
Jun 1994
 - 
Jun 1994
Kyushu University, Interdisciplinary Graduate School of Engineering Sciences, Dr. Sci.
 
Apr 1988
 - 
Mar 1990
Division of Information Systems, Master Course, InterdisciplinaryGraduate School of Engineering Sciences, Kyushu University
 
Apr 1984
 - 
Mar 1988
Department of Physics, Faculty of Science, Kyushu University
 

Awards & Honors

 
Jun 2016
Practical Algorithms for Mining Flock Patterns from Trajectories, Best Paper Award, Information Processing Society Japan (IPSJ)
Winner: Xiaoliang Geng, Takeaki Uno, Hiroki Arimura
 
Jun 2013
Efficient Enumeration of Acyclic Sub-hypergraphs in Hypergraphs, JSAI Incentive Award, The Japanese Society for Artificial Intelligence
Winner: Kunihiro Wasa, Hiroki Arimura, Takeaki Uno, Kouichi Hirata
 
Jun 2010
Inf. & Syst. Society Best Paper Award (4 year award), IEICE
Winner: Shin-ichi Minato, Hiroki Arimura
 
Feb 2005
Kambayashi memorial award, Japan Database Society Japan
 
Nov 2004
BEST IMPLEMENTATION AWARD, 2nd Workshop on Frequent Itemset Mining Implementations (FIMI'04), in conjunction with IEEE ICDM'04
Winner: Takeaki Uno, Masashi Kiyomi, and Hiroki Arimura
 
Nov 2004
2004 SIG Best Paper Award, Japan Society of Artificial Intelligence
Winner: Hiroki Arimura, Takeaki Uno
 
Jul 2004
DEWS2004 Best paper award, IEICE SIG-DE
Winner: Shinji Fusanobu, Tatsuya Asai, Hiroki Arimura, Takeaki Uno, Shin-ichi Nakano
 

Published Papers

 
Iku Ohama, Issei Sato, Takuya Kida, Hiroki Arimura
Proc. the 31st Annual Conference on Neural Information Processing Systems (NIPS2017)      Dec 2017   [Refereed]
Takuya Takagi, Keisuke Goto, Yuta Fujishige, Shunsuke Inenaga, Hiroki Arimura
In Proceedings of the 24th International Symposium on String Processing and Information Retrieval (SPIRE 2017), Lecture Notes in Computer Science,   10508, 304-316   Sep 2017   [Refereed]
Takuya Takagi, Shunsuke Inenaga, Kunihiko Sadakane, Hiroki Arimura
IEICE Trans. Inf. and Syst.   E100-A(9) 1785-1793   Sep 2017   [Refereed]
Iku Ohama, Hiromi Iida, Takuya Kida, and Hiroki Arimura
Proc. the 26th International Joint Conference on Artificial Intelligence (IJCAI 2017)   2578-2584   Aug 2017   [Refereed]
Junpei Komiyama, Masakazu Ishihata, Hiroki Arimura, Takashi Nishibayashi, Shin-Ichi Minato
In Proceedings of the 23rd ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD 2017)   897-906   Aug 2017   [Refereed]
Hiroki Arimura
Discrete Applied Mathematics   212 61-80   Oct 2016   [Refereed]
Mayumbo Nyirenda, Hiroki Arimura, Kimihito Ito
Proc. 5th International Conference on Multimedia Computing and Systems (ICMCS'16), IEEE   ID-111   Oct 2016   [Refereed]
Takuya Takagi, Shunsuke Inenaga, Kunihiko Sadakane, Hiroki Arimura
Proc. 27th International Workshop on Combinatorial Algorithm (IWOCA 2016), Lecture Notes in Computer Science   9843 213-225   Sep 2016   [Refereed]
Mayumbo Nyirenda, Ryosuke Omori, Heidi L. Tessmer, Hiroki Arimura, Kimihito Ito
PLoS ONE   11(11) e0166107   Sep 2016   [Refereed]
Takuya Takagi, Shunsuke Inenaga and Hiroki Arimura
Proc. the 27th Annual Symposium on Combinatorial Pattern Matching (CPM'16), Leibniz International Proceedings in Informatics (LIPIcs)   54 22:1-22:13   Jun 2016   [Refereed]
Iku Ohama, Hiromi Iida, Takuya Kida, and Hiroki Arimura
IEICE Trans. Inf. and Syst.   E99-D(4) 1139-1152   Apr 2016   [Refereed]
Kunihiro Wasa, Katsuhisa Yamanaka, Hiroki Arimura
Proc. 10th International Conference on Language and Automata Theory and Applications (LATA 2016), Lecture Notes in Computer Science   9618 330-342   Mar 2016   [Refereed]
Yoichi Sasaki, Tetsuo Shibuya, Kimihito Ito and Hiroki Arimura
Proc. 8th International Conference on Similarity Search and Applications (SISAP 2015), Lecture Notes in Computer Science   9371 191-203   Oct 2015   [Refereed]
Practical Algorithms for Mining Flock Patterns from Trajectories
Xiaoliang Geng, Takeaki Uno, Hiroki Arimura
Transactions of IPSJ   56(4) 1292-1304   Apr 2015   [Refereed]
Manipulatable Compressed String Indexing Technology for Pattern Matching
Shuhei Denzumi, Hiroki Arimura, Kunihiko Sadakane
The journal of the Institute of Electronics, Information and Communication Engineers   97(12) 1080-1085   Dec 2014   [Refereed]
Kunihiro Wasa, Takeaki Uno, and Hiroki Arimura
Proc. the 25th International Symposium on Algorithms and Computation (ISAAC 2014), Lecture Notes in Computer Science   8889 94-102   Dec 2014   [Refereed]
Xiaoliang Geng, Takuya Takagi, Hiroki Arimura, and Takeaki Uno
53-61   Nov 2014   [Refereed]
Hirohito Sasakawa, Hiroki Harada, Dave duVerle, Hiroki Arimura, Koji Tsuda, Jun Sakuma
Proc. the 13th Workshop on Privacy in the Electronic Society (WPES 2014), ACM   21-30   Nov 2014   [Refereed]
Ryutaro Kurai, Norihito Yasuda, Hiroki Arimura, Shinobu Nagayama, Shin-ichi Minato
Proc. Prague Stringology Conference 2014 (PSC'14)   3-16   Sep 2014   [Refereed]
Shuhei Denzumi, Jun Kawahara, Koji Tsuda, Hiroki Arimura, Shin-ichi Minato, and Kunihiko Sadakane
Proc. 13th International Symposium on Experimental Algorithms (SEA 2014), Lecture Notes in Computer Science   8504 187-198   Jun 2014   [Refereed]
Kunihiro Wasa, Yusaku Kaneta, Takeaki Uno, and Hiroki Arimura
IEICE Trans. Inf. and Syst.   E97-D(3) 421-430   2014   [Refereed]
Kunihiro Wasa,Kouichi Hirata,Takeaki Uno,Hiroki Arimura
Similarity Search and Applications - 6th International Conference, SISAP 2013, A Coruña, Spain, October 2-4, 2013, Proceedings   73-84   Sep 2013   [Refereed]
Iku Ohama,Hiromi Iida,Takuya Kida,Hiroki Arimura
Advances in Knowledge Discovery and Data Mining, 17th Pacific-Asia Conference, PAKDD 2013, Gold Coast, Australia, April 14-17, 2013, Proceedings, Part II   147-159   2013   [Refereed]
Kunihiro Wasa,Takeaki Uno,Kouichi Hirata,Hiroki Arimura
Discovery Science - 16th International Conference, DS 2013, Singapore, October 6-9, 2013. Proceedings   308-323   2013   [Refereed]
Kunihiro Wasa,Yusaku Kaneta,Takeaki Uno,Hiroki Arimura
Computing and Combinatorics - 18th Annual International Conference, COCOON 2012, Sydney, Australia, August 20-22, 2012. Proceedings   347-359   2012   [Refereed]
Yusaku Kaneta,Hiroki Arimura,Rajeev Raman
J. Discrete Algorithms   14 119-135   2012   [Refereed]
Ryo Yoshinaka,Jun Kawahara,Shuhei Denzumi,Hiroki Arimura,Shin-ichi Minato
Inf. Process. Lett.   112(16) 636-640   2012   [Refereed]
Yusaku Kaneta,Shingo Yoshizawa,Shin-ichi Minato,Hiroki Arimura,Yoshikazu Miyanaga
IEICE Transactions   95-D(7) 1847-1857   2012   [Refereed]
Shuhei Denzumi,Ryo Yoshinaka,Hiroki Arimura,Shin-ichi Minato
Proceedings of the Prague Stringology Conference 2011, Prague, Czech Republic, August 29-31, 2011   147-161   2011   [Refereed]
Shuhei Denzumi,Hiroki Arimura,Shin-ichi Minato
Proceedings of the 10th ACM SIGPLAN workshop on Erlang, Tokyo, Japan, September 23, 2011   90-91   2011   [Refereed]
Takashi Uemura,Hiroki Arimura
Combinatorial Pattern Matching - 22nd Annual Symposium, CPM 2011, Palermo, Italy, June 27-29, 2011. Proceedings   246-260   2011   [Refereed]
Yusaku Kaneta,Shin-ichi Minato,Hiroki Arimura
String Processing and Information Retrieval - 17th International Symposium, SPIRE 2010, Los Cabos, Mexico, October 11-13, 2010. Proceedings   372-384   2010   [Refereed]
Yusaku Kaneta,Hiroki Arimura
Combinatorial Algorithms - 21st International Workshop, IWOCA 2010, London, UK, July 26-28, 2010, Revised Selected Papers   68-81   2010   [Refereed]
Hiroki Arimura
Computer and Information Sciences - Proceedings of the 25th International Symposium on Computer and Information Sciences, London, UK, September 22-24, 2010   353-358   2010   [Refereed]
Yusaku Kaneta,Shingo Yoshizawa,Shin-ichi Minato,Hiroki Arimura,Yoshikazu Miyanaga
Proceedings of the International Conference on Field-Programmable Technology, FPT 2010, 8-10 December 2010, Tsinghua University, Beijing, China   21-28   2010   [Refereed]
Takashi Katoh,Hiroki Arimura,Kouichi Hirata
Advances in Knowledge Discovery and Data Mining, 13th Pacific-Asia Conference, PAKDD 2009, Bangkok, Thailand, April 27-30, 2009, Proceedings   172-183   2009   [Refereed]
Takashi Katoh,Hiroki Arimura,Kouichi Hirata
New Frontiers in Artificial Intelligence, JSAI-isAI 2009 Workshops, LENLS, JURISIN, KCSD, LLLL, Tokyo, Japan, November 19-20, 2009, Revised Selected Papers   331-344   2009   [Refereed]
Hideyuki Ohtani,Takuya Kida,Takeaki Uno,Hiroki Arimura
Proceedings of the 3rd International Conference on Ubiquitous Information Management and Communication, ICUIMC 2009, Suwon, Korea, January 15-16, 2009   457-464   2009   [Refereed]
Takashi Katoh,Hiroki Arimura,Kouichi Hirata
Discovery Science, 12th International Conference, DS 2009, Porto, Portugal, October 3-5, 2009   136-151   2009   [Refereed]
UEMURA Takashi, KIDA Takuya, ARIMURA Hiroki
The IEICE Trans Inf & Syst.   91(3) 595-607   Mar 2008
Takeaki Uno,Hiroki Arimura
Advances in Knowledge Discovery and Data Mining, 12th Pacific-Asia Conference, PAKDD 2008, Osaka, Japan, May 20-23, 2008 Proceedings   357-368   2008   [Refereed]
Shin-ichi Minato,Takeaki Uno,Hiroki Arimura
Advances in Knowledge Discovery and Data Mining, 12th Pacific-Asia Conference, PAKDD 2008, Osaka, Japan, May 20-23, 2008 Proceedings   234-246   2008   [Refereed]
Tatsuya Asai,Seishi Okamoto,Hiroki Arimura
New Frontiers in Applied Data Mining, PAKDD 2008 International Workshops, Osaka, Japan, May 20-23, 2008. Revised Selected Papers   13-25   2008   [Refereed]
Hiroki Arimura
Advances in Knowledge Discovery and Data Mining, 12th Pacific-Asia Conference, PAKDD 2008, Osaka, Japan, May 20-23, 2008 Proceedings   2-13   2008   [Refereed]
Takuya Kida,Tomoya Saito,Hiroki Arimura
New Frontiers in Applied Data Mining, PAKDD 2008 International Workshops, Osaka, Japan, May 20-23, 2008. Revised Selected Papers   1-12   2008   [Refereed]
Takashi Uemura,Daisuke Ikeda,Hiroki Arimura
Discovery Science, 11th International Conference, DS 2008, Budapest, Hungary, October 13-16, 2008. Proceedings   319-331   2008   [Refereed]
Takeaki Uno,Hiroki Arimura
Discovery Science, 10th International Conference, DS 2007, Sendai, Japan, October 1-4, 2007, Proceedings   4755 219-230   Oct 2007   [Refereed]
Hiroki Arimura,Takeaki Uno,Shinichi Shimozono
Discovery Science, 10th International Conference, DS 2007, Sendai, Japan, October 1-4, 2007, Proceedings   42-55   2007   [Refereed]
Uemura Takashi, Kida Takuya, Arimura Hiroki
5 5-8   Aug 2006
Satoshi Morinaga,Hiroki Arimura,Takahiro Ikeda,Yosuke Sakao,Susumu Akamine
Proceedings of the Eleventh ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, Chicago, Illinois, USA, August 21-24, 2005   666-671   Aug 2005   [Refereed]
Shin-ichi Minato,Hiroki Arimura
2005 International Workshop on Challenges in Web Information Retrieval and Integration (WIRI 2005)   4-11   Apr 2005   [Refereed]
ARIMURA Hiroki
The transactions of the Institute of Electronics, Information and Communication Engineers. D-I   88(3) 563-575   Mar 2005
ARIMURA Hiroki, KIDA Takuya
IPSJ Magazine   46(1) 4-11   Jan 2005
Hiroki Arimura,Takeaki Uno
Algorithms and Computation, 16th International Symposium, ISAAC 2005, Sanya, Hainan, China, December 19-21, 2005, Proceedings   724-737   2005   [Refereed]
Hiroki Arimura, Sanjay Jain
Theor. Comput. Sci.   348(1) 1-2   2005   [Invited]
Yamada Yasuhiro, Ikeda Daisuke, Sakamoto Hiroshi, Arimura Hiroki
Journal of Japanese Society for Artificial Intelligence   19(3) 302-310   May 2004
ASAI Tatsuya, ARIMURA Hiroki
The transactions of the Institute of Electronics, Information and Communication Engineers. D-I   87(2) 79-96   Feb 2004
Tatsuya Asai,Kenji Abe,Shinji Kawasoe,Hiroki Arimura,Setsuo Arikawa
New Frontiers in Artificial Intelligence - JSAI 2003 and JSAI 2004 Conferences and Workshops, Niigata, Japan, June 23-27, 2003 and Kanazawa, Japan, May 31 - June 4, 2004, Revised Selected Papers   3609 29-45   2004   [Refereed]
Takeaki Uno,Masashi Kiyomi,Hiroki Arimura
FIMI '04, Proceedings of the IEEE ICDM Workshop on Frequent Itemset Mining Implementations, Brighton, UK, November 1, 2004      2004   [Refereed]
Takeaki Uno,Tatsuya Asai,Yuzo Uchida,Hiroki Arimura
Discovery Science, 7th International Conference, DS 2004, Padova, Italy, October 2-5, 2004, Proceedings   16-31   2004   [Refereed]
Tatsuya Asai,Kenji Abe,Shinji Kawasoe,Hiroshi Sakamoto,Hiroki Arimura,Setsuo Arikawa
IEICE Transactions   87-D(12) 2754-2763   2004   [Refereed]
Takeaki Uno,Tatsuya Asai,Yuzo Uchida,Hiroki Arimura
FIMI '03, Frequent Itemset Mining Implementations, Proceedings of the ICDM 2003 Workshop on Frequent Itemset Mining Implementations, 19 December 2003, Melbourne, Florida, USA      2003   [Refereed]
Tatsuya Asai,Hiroki Arimura,Takeaki Uno,Shin-Ichi Nakano
Discovery Science, 6th International Conference, DS 2003, Sapporo, Japan, October 17-19,2003, Proceedings   47-61   2003   [Refereed]
Hiroshi Sakamoto,Kouichi Hirata,Hiroki Arimura
Theor. Comput. Sci.   1(298) 21-50   2003   [Refereed]
Arimura Hiroki, Sakamoto Hiroshi
12(4) 366-378   Dec 2002
IKEDA Daisuke, SAKAMOTO Hiroshi, ARIMURA Hiroki
Systems, control and information   46(4) 177-183   Apr 2002
Tatsuya Asai,Kenji Abe,Shinji Kawasoe,Hiroki Arimura,Hiroshi Sakamoto,Setsuo Arikawa
Proceedings of the Second SIAM International Conference on Data Mining, Arlington, VA, USA, April 11-13, 2002      2002   [Refereed]
Kenji Abe,Shinji Kawasoe,Tatsuya Asai,Hiroki Arimura,Setsuo Arikawa
Principles of Data Mining and Knowledge Discovery, 6th European Conference, PKDD 2002, Helsinki, Finland, August 19-23, 2002, Proceedings   1-14   2002   [Refereed]
Tatsuya Asai,Hiroki Arimura,Kenji Abe,Shinji Kawasoe,Setsuo Arikawa
Proceedings of the 2002 IEEE International Conference on Data Mining (ICDM 2002), 9-12 December 2002, Maebashi City, Japan   27-34   2002   [Refereed]
Hiroshi Sakamoto,Hiroki Arimura,Setsuo Arikawa
Progress in Discovery Science, Final Report of the Japanese Discovery Science Project   586-599   2002   [Refereed]
Hiroki Arimura,Hiroshi Sakamoto,Setsuo Arikawa
Progress in Discovery Science, Final Report of the Japanese Discovery Science Project   123-139   2002   [Refereed]
Hiroki Arimura
Combinatorial Pattern Matching, 13th Annual Symposium, CPM 2002, Fukuoka, Japan, July 3-5, 2002, Proceedings   17-19   2002   [Refereed]
ASAKA HIROKI, KAWASOE SHINJI, ABE JUNICHIRO, ARIMURA HIROKI, ARIKAWA SETSUO
42(14) 14-24   Dec 2001
In this paper, we study efficient parallel construction of full-text indexing structures for large text data. The suffix array is a compact full-text indexing structure that is useful in information retrieval and bio-informatics. We propose an eff...
MURAKAMI YOSHITSUGU, SAKAMOTO HIROSHI, ARIMURA HIROKI, ARIKAWA SETSUO
情報処理学会論文誌. 数理モデル化と応用   42(14) 39-49   Dec 2001
Sakamoto Hiroshi, Arimura Hiroki
Journal of Japanese Society for Artificial Intelligence   16(2) 233-238   Mar 2001
Nasukawa Tetsuya, Kawano Hiroyuki, Arimura Hiroki
Journal of Japanese Society for Artificial Intelligence   16(2) 201-211   Mar 2001
Akihiro Yamamoto,Kimihito Ito,Akira Ishino,Hiroki Arimura
Inductive Logic Programming, 11th International Conference, ILP 2001, Strasbourg, France, September 9-11, 2001, Proceedings   240-247   2001   [Refereed]
Hiroshi Sakamoto,Yoshitsugu Murakami,Hiroki Arimura,Setsuo Arikawa
Proceedings of the Fourteenth International Florida Artificial Intelligence Research Society Conference, May 21-23, 2001, Key West, Florida, USA   264-268   2001   [Refereed]
Katsuaki Taniguchi,Hiroshi Sakamoto,Hiroki Arimura,Shinichi Shimozono,Setsuo Arikawa
Discovery Science, 4th International Conference, DS 2001, Washington, DC, USA, November 25-28, 2001, Proceedings   378-388   2001   [Refereed]
Toru Kasai,Gunho Lee,Hiroki Arimura,Setsuo Arikawa,Kunsoo Park
Combinatorial Pattern Matching, 12th Annual Symposium, CPM 2001 Jerusalem, Israel, July 1-4, 2001 Proceedings   181-192   2001   [Refereed]
Hiroki Arimura,Hiroki Asaka,Hiroshi Sakamoto,Setsuo Arikawa
Combinatorial Pattern Matching, 12th Annual Symposium, CPM 2001 Jerusalem, Israel, July 1-4, 2001 Proceedings   152-156   2001   [Refereed]
Hiroki Arimura,Hiroshi Sakamoto,Setsuo Arikawa
Algorithmic Learning Theory, 12th International Conference, ALT 2001, Washington, DC, USA, November 25-28, 2001, Proceedings   315-331   2001   [Refereed]
Tatsuya Akutsu,Hiroki Arimura,Shinichi Shimozono
RECOMB 2000   1-7   2000   [Refereed]
Ryoichi Fujino,Hiroki Arimura,Setsuo Arikawa
Knowledge Discovery and Data Mining, Current Issues and New Applications, 4th Pacific-Asia Conference, PADKK 2000, Kyoto, Japan, April 18-20, 2000, Proceedings   281-293   2000   [Refereed]
Hiroki Arimura,Jun-ichiro Abe,Hiroshi Sakamoto,Setsuo Arikawa,Ryoichi Fujino,Shinichi Shimozono
Kyoto International Conference on Digital Libraries 2000   121-126   2000   [Refereed]
Hiroki Arimura,Hiroshi Sakamoto,Setsuo Arikawa
Inductive Logic Programming, 10th International Conference, ILP 2000, Work-in-progress reports, London, UK, July 2000, Proceedings      2000   [Refereed]
Hiroshi Sakamoto,Hiroki Arimura,Setsuo Arikawa
Grammatical Inference: Algorithms and Applications, 5th International Colloquium, ICGI 2000, Lisbon, Portugal, September 11-13, 2000, Proceedings   241-255   2000   [Refereed]
Takeshi Shinohara,Hiroki Arimura
Theor. Comput. Sci.   241(1-2) 191-209   2000   [Refereed]
Shinichi Shimozono,Hiroki Arimura,Setsuo Arikawa
New Generation Comput.   18(1) 49-60   2000   [Refereed]
Iku Ohama, Takuya Kida, and Hiroki Arimur
Proc. 2015 SIAM International Conference on Data Mining (SDM'15)   9   [Refereed]

Misc

 
Kunihiro Wasa, Hiroki Arimura, Takeaki Uno, Kouichi Hirata
IPSJ SIG Notes   2013(6) 1-8   Feb 2013
In this paper we study the problem of enumerating all connected and Berge-acyclic hyperedge-contracted sub-hypergraphs in an input hypergraph. We present the first polynomial delay and polynomial space enumeration algorithm for the problem.
Takuya Takagi, Takashi Uemura, Hiroki Arimura
IPSJ SIG Notes   2012(9) 1-8   Oct 2012
We present an efficient algorithm on Word RAM for constructing a sparse suffix tree on an encoded text over a regular prefix-code in O(?N/w? √w+K√w) time using O(σ)preprocessing and O(K + σ) word space, where N is the length of the text in base le...
OHAMA Iku, IIDA Hiromi, KIDA Takuya, ARIMURA Hiroki
111(480) 1-8   Mar 2012
We propose a new generative model which analyses asymmetric and individually different relational data. In our proposed model, each object has a parameter which adjusts chance of encounter with another objects. Then, based on the idea of subset cl...
OHAMA Iku, KIDA Takuya, ARIMURA Hiroki, ABE Toshihisa
IEICE technical report   110(476) 9-16   Mar 2011
We discuss the geographical clustering problem on human activity logs. In this paper, we formulate the problem as a segmentation problem for 2-dimensional sequence data, and propose two clustering methods, named LS-linHMM and X-linHMM. LS-linHMM i...
Proceedings of the IEICE General Conference   2011(2) "SSS-30"-"SSS-31"   Feb 2011

Books etc

 
Encyclopedia of Natural Language Processing (In Japanese)
Hiroki Arimura (Part:Contributor, "Information extraction from semi-structured texts")
The Kyoritsu Co.,Ltd   Dec 2009   
Computational Challenges of Massive Data Sets and Randomness in Computation, Special Issue on the First and Second Japanese-German Frontiers of Science Symposia
Hiroki Arimura
Journal of Universal Computer Science, Vol. 12, issue 6, 579-761   Jul 2006   
JSAI Encyclopedia of Aritificial Intelligence (In Japanese)
Hiroki Arimura (Part:Contributor, Text mining)
The Kyoritsu Co.,Ltd   Dec 2005   
Proceedings of the 11th International Conference on Algorithmic Learning Theory
Hiroki Arimura (Part:Editor)
Springer-Verlag   Oct 2000   

Research Grants & Projects

 
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(A))
Project Year: 2007 - 2011    Investigator(s): Hiroki ARIMURA
In this research, we study efficient semi-structured data mining technologies and related knowledge federation and indexing technologies, which enables knowledge extraction from massive semi-structured data in the real world. Finally, we made a nu...
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(特別推進研究)
Project Year: 2005 - 2007    Investigator(s): Hiroki ARIMURA
By rapid progress of network and storage technologies for the last decade, a huge amount of weakly structured electronic data of various types, called semi-structured data, become available over the Internet. In this research project, we study eff...
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(B))
Project Year: 2003 - 2005    Investigator(s): 有村 博紀, Daisuke IKEDA
In this research, we investigated high-speed online knowledge discovery system for extracting useful information from massive semi-structured data streams. Particularly in this year, as theoretical researches, we extended further the theory of eff...
Study of efficient text data mining based on optimized pattern discovery
JST: PRESTO21, "Information and Intelligence"
Project Year: Oct 1999 - Mar 2002    Investigator(s): Hiroki Arimura
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(B))
Project Year: 1999 - 2001    Investigator(s): Hiroki ARIMURA
The goal of this research project is to devise an efficient semi-automatic tool that supports human discovery from large unstructured and semi-structured text data. To achieve this goal, we studied in the following three directions.1. The central ...