New developments in string processing based on combinatorics and advanced data structures
Project/Area Number |
26280003
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Theory of informatics
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Research Institution | Kyushu University |
Principal Investigator |
Inenaga Shunsuke 九州大学, システム情報科学研究院, 准教授 (60448404)
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Co-Investigator(Kenkyū-buntansha) |
坂内 英夫 九州大学, システム情報科学研究院, 准教授 (20323644)
田部井 靖生 東京工業大学, 情報理工学院, 研究員 (20589824)
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Project Period (FY) |
2014-04-01 – 2018-03-31
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Project Status |
Completed (Fiscal Year 2017)
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Budget Amount *help |
¥15,210,000 (Direct Cost: ¥11,700,000、Indirect Cost: ¥3,510,000)
Fiscal Year 2016: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
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Keywords | アルゴリズム / データ構造 / 文字列組み合わせ論 / 文字列データ処理 / NP完全性 / アルゴリズム理論 / 文字列情報処理 |
Outline of Final Research Achievements |
Digital data can bee seen as sequences of symbols or characters, which are called strings. In this research, we developed fast and space-efficient string processing algorithms that can be a basis for dealing with massive digital data. Combinatorics on words and advanced data structure technologies were the two core primitives for achieving this goal. One of our main contributions is compressed string processing, where the task is to conduct various queries and/or operations over compressed data without explicitly expanding it. Our algorithms work on LZ compression, SLPs, and/or RLE compression. The results obtained in this research have been published in well recognized journals and conference proceedings. We also gave oral presentations in both domestic and international conferences.
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Report
(5 results)
Research Products
(81 results)
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[Journal Article] Computing Longest Single-arm-gapped Palindromes in a String2017
Author(s)
Shintaro Narisada, Diptarama, Kazuyuki Narisawa, Shunsuke Inenaga, Ayumi Shinohara
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Journal Title
Proc. 43rd International Conference on Current Trends in Theory and Practice of Computer Science (SOFSEM 2017)
Volume: -
Pages: 375-386
DOI
ISBN
9783319519623, 9783319519630
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Closed factorization2016
Author(s)
Golnaz Badkobeh, Hideo Bannai, Keisuke Goto, Tomohiro I, Costas S. Iliopoulos, Shunsuke Inenaga, Simon J. Puglisi, Shiho Sugimoto
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Journal Title
Discrete Applied Mathematics
Volume: 212
Pages: 23-29
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Finding Gapped Palindromes Online2016
Author(s)
Yuta Fujishige, Michitaro Nakamura, Shunsuke Inenaga, Hideo Bannai, Masayuki Takeda: Finding Gapped Palindromes Online
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Journal Title
IWOCA 2016
Volume: -
Pages: 191-202
DOI
ISBN
9783319445427, 9783319445434
Related Report
Peer Reviewed / Open Access
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[Journal Article] Diverse Palindromic Factorization is NP-Complete2015
Author(s)
Hideo Bannai, Travis Gagie, Shunsuke Inenaga, Juha Karkkainen, Dominik Kempa, Marcin Piatkowski, Simon J. Puglisi, Shiho Sugimoto
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Journal Title
DLT 2015
Volume: DLT 2015
Pages: 85-96
DOI
ISBN
9783319214993, 9783319215006
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Inferring Strings from Full Abelian Periods2015
Author(s)
Makoto Nishida, Tomohiro I, Shunsuke Inenaga, Hideo Bannai, Masayuki Takeda
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Journal Title
Proceedings of the 26th International Symposium on Algorithms and Computation (ISAAC 2015)
Volume: LNCS 9472
Pages: 768-779
DOI
ISBN
9783662489703, 9783662489710
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Closed Factorization2014
Author(s)
Golnaz Badkobeh, Hideo Bannai, Keisuke Goto, Tomohiro I, Costas S. Iliopoulos, Shunsuke Inenaga, Simon J. Puglisi, and Shiho Sugimoto
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Journal Title
Proc. Prague Stringology Conference 2014 (PSC 2014)
Pages: 162-168
Related Report
Peer Reviewed
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[Presentation] Finding gapped palindromes online2016
Author(s)
Yuta Fujishige, Michitaro Nakamura, Shunsuke Inenaga, Hideo Bannai and Masayuki Takeda
Organizer
27th International Workshop on Combinatorial Algorithms (IWOCA 2016)
Place of Presentation
Helsinki, Finalnd
Year and Date
2016-08-17
Related Report
Int'l Joint Research
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[Presentation] Factorizing a string into squares in linear time2016
Author(s)
Yoshiaki Matsuoka, Shunsuke Inenaga, Hideo Bannai, Masayuki Takeda, and Florin Manea
Organizer
27th Annual Symposium on Combinatorial Pattern Matching (CPM 2016)
Place of Presentation
Tel Aviv, Israel
Year and Date
2016-06-27
Related Report
Int'l Joint Research
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[Presentation] Efficiently Finding All Maximal α-gapped Repeats2016
Author(s)
Pawel Gawrychowski, Tomohiro I, Shunsuke Inenaga, Dominik Koeppl, and Florin Manea
Organizer
33rd Symposium on Theoretical Aspects of Computer Science (STACS 2016)
Place of Presentation
Orleans, France
Year and Date
2016-02-17
Related Report
Int'l Joint Research
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[Presentation] Inferring Strings from Full Abelian Periods2015
Author(s)
Makoto Nishida, Tomohiro I, Shunsuke Inenaga, Hideo Bannai and Masayuki Takeda
Organizer
26th International Symposium on Algorithms and Computation (ISAAC 2015)
Place of Presentation
Nagoya, Japan
Year and Date
2015-12-09
Related Report
Int'l Joint Research
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[Presentation] Efficient Algorithms for Longest Closed Factor Array2015
Author(s)
Hideo Bannai, Shunsuke Inenaga, Tomasz Kociumaka, Arnaud Lefebvre, Jakub Radoszewski, Wojciech Rytter, Shiho Sugimoto and Tomasz Walen
Organizer
22nd Symposium on String Processing and Information Retrieval (SPIRE 2015)
Place of Presentation
London, UK
Year and Date
2015-09-01
Related Report
Int'l Joint Research
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[Presentation] Computing Left-Right Maximal Generic Words2015
Author(s)
Takaaki Nishimoto, Yuto Nakashima, Shunsuke Inenaga, Hideo Bannai and Masayuki Takeda
Organizer
Prague Stringology Conference 2015 (PSC 2015)
Place of Presentation
Prague, Czech Republic
Year and Date
2015-08-24
Related Report
Int'l Joint Research
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[Presentation] Diverse Palindromic Factorization is NP-Complete2015
Author(s)
Hideo Bannai, Travis Gagie, Shunsuke Inenaga, Juha Kärkkäinen, Dominik Kempa, Marcin Piatkowski, Simon J. Puglisi, Shiho Sugimoto
Organizer
19th International Conference on Developments in Language Theory (DLT 2015)
Place of Presentation
Liverpool, UK
Year and Date
2015-07-27
Related Report
Int'l Joint Research
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[Presentation] Closed Factorization2014
Author(s)
Golnaz Badkobeh, Hideo Bannai, Keisuke Goto, Tomohiro I, Costas S. Iliopoulos, Shunsuke Inenaga, Simon J. Puglisi, and Shiho Sugimoto
Organizer
Prague Stringology Conference 2014 (PSC 2014)
Place of Presentation
Prague, Czech Republic
Year and Date
2014-09-01 – 2014-09-03
Related Report
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[Presentation] Inferring strings from Lyndon factorization2014
Author(s)
Yuto Nakashima, Takashi Okabe, Tomohiro I, Shunsuke Inenaga, Hideo Bannai and Masayuki Takeda
Organizer
39th International Symposium on Mathematical Foundations of Computer Science (MFCS 2014)
Place of Presentation
Budapest, Hungary
Year and Date
2014-08-25 – 2014-08-29
Related Report
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