Publications

• Reviewd Papers
• Non-reviewd Papers
• Patents

Reviewd Papers

2006

• K. Narisawa, Y. Yamada, D. Ikeda, and M. Takeda: ``Detecting Blog Spams using the Vocabulary Size of All Substrings in Their Copies,'' Proceedings of the 3rd Annual Workshop on Weblogging Ecosystem, May 2006 (to appear).

2005

• T. Nakatoh, K. Baba, D. Ikeda, Y. Yamada and S. Hirokawa: ``An Efficient Mapping for Score of String Matching,'' Journal of Automata, Languages and Combinatorics (to appear).
• Y. Dou, E. Itoh, S. Hirokawa and D. Ikeda, ``An Approach to Analyzing Correlation between Songs/Artists Using iTMS Playlists'', Proceedings of International Conference on Intelligent Agents, Web Technology and Internet Commerce (IAWTIC'2005), pp. 951-956, Nov. 2005.
• Daisuke Ikeda, Yasuhiro Yamada, and Sachio Hirokawa, "A Pattern Discovery Algorithm by Substring Amplification," IPSJ Transactions on Mathematical Modeling and Its Applications, Vol.46, No. SIG 2(TOM 11), pp. 56--66, January 2005. (in Japanese)

2004

• Daisuke Ikeda and Yasuhiro Yamada, "Frequent Pattern Mining by Total Occurrence and Its Application to Common Pattern Discovery," Proceedings of the 4th Data Mining Workshop, pp. 33--40, September 2004 (in Japanese).
• Daisuke Ikeda and Yasuhiro Yamada, "Gathering Text Files Generated from Templates," Proceedings of VLDB Workshop on Information Integration on the Web, pp.21--26, 2004.
• Yasuhiro Yamada, Daisuke Ikeda, and Sachio Hirokawa, "Detecting Common Parts and Wrapper Generation for Multilingual Web Documents using Alternation Counts," IPSJ Journal Vol. 45, No. 9, pp. 2138--2145, September 2004. (in Japanese.)
• Daisuke Ikeda and Yasuhiro Yamada, "Information Extraction with and without Parsing Semi-structured Documents," DOI-Technical Report, Vol. 221, March 2004.
• Daisuke Ikeda, "Autoschediastic Text Mining Algorithm," Doctorial Thesis, Graduate School of Information Science and Electrical Engineering, Kyushu University, March 2004.
• Daisuke Ikeda, "INSTANCE BASED TABLE INTEGRATION ALGORITHM FOR MULTILINGUAL TABLES ON THE WEB," Bulletin of Informatics and Cybernetics, Vol. 35, No.1-2, pp.41-55, December 2004.

2003

• Daisuke Ikeda, Yasuhiro Yamada, and Sachio Hirokawa, "A Template Discovery Algorithm by Substring Amplification," DOI-Technical Report, Vol. 220, December 2003.
• Daisuke Ikeda, Sachio Hirokawa, and Yasuhiro Yamada, "Pattern Discovery of Genome Sequences by Substring Amplification," Proceedings of International Symposium on Information Science and Electrical Engineering, pp. 637--640, November, 2003
• Daisuke Ikeda, "Instance Based Table Integration Algorithm for Multilingual Tables on the Web," DOI-Technical Report, Vol. 217, June 2003.
• Daisuke Ikeda, Yasuhiro Yamada, and Sachio Hirokawa, "Expressive Power of Tree and String Based Wrappers," Proceedings of IJCAI-03 Workshop on Information Integration on the Web (IIWeb-03), pp. 21--26, August, 2003.

2002

• Daisuke Ikeda, Hiroshi Sakamoto, and Hiroki Arimura, "Web Data Mining," ISCIE Journal "Systems, Control and Information", Special Issue on Data Mining, The Institute of Systems, Control and Information Enginerrs, pp. 177--183, Vol. 46, No. 4, Apr. 2002.
• Yasuhiro Yamada, Daisuke Ikeda, and Sachio Hirokawa, "Automatic Wrapper Generation for Multilingual Web Resources," In Proceedings of the 5th International Conference on Discovery Science, Lecture Notes in Computer Science, Springer-Verlag, Vol. 2534, pp. 332--339, November 2002.
• Sachio Hirokawa and Daisuke Ikeda, "Visualization and Analysis of Web Graphs," Progress in Discovery Science, Setsuo Arikawa and Ayumi Shinohara Eds., Lecture Notes in Computer Science, Springer-Verlag, Vol. 2281, pp. 616--627, 2002.

2001

• Daisuke Ikeda, Yasuhiro Yamada, and Sachio Hirokawa, "Eliminating Useless Parts in Semi-structured Documents using Alternation Counts," In Proceedings of the 4th International Conference on Discovery Science, Lecture Notes in Artificial Intelligence, Springer-Verlag, Vol. 2226, pp. 113--127, November 2001.
• Yasuhiro Yamada, Daisuke Ikeda, and Sachio Hirokawa, "SCOOP: A Record Extractor without Knowledge on Input," In Proceedings of the 4th International Conference on Discovery Science, Lecture Notes in Artificial Intelligence, Springer-Verlag, Vol. 2226, pp. 482--487, November 2001.
• Sachio Hirokawa and Daisuke Ikeda, "Analysis of Web Graphs," Transactions of the Japanese Society for Artificial Intelligence, Vol. 16, No. 4, pp. 525--529, July 2001 (in Japanese).

2000

• Daisuke Ikeda and Sachio Hirokawa, "Extracting Positve and Negative Keywords for Web Communities," In Proceedings of the 3rd International Conference on Discovery Science, Lecture Notes in Artificial Intelligence, Springer-Verlag, Vol. 1967, pp. 299--303, December 2000.
• Hiroshi Sakamoto and Daisuke Ikeda, "Intractability of Decision Problems for Finite-Memory Automata", Theoretical Computer Science Vol. 231, No.1, January (2000) pp.297--308.

1999

• Daisuke Ikeda, "Characteristic Sets of Strings Common to Semi-Structured Documents", In Proceedings of the 2nd International Conference on Discovery Science, Lecture Notes in Artificial Intelligence, Springer-Verlag, Vol. 1721, pp. 139--147, December 1999.
• Daisuke Ikeda, Tsuyoshi Taguchi, and Sachio Hirokawa, "Developing a Knowledge Network of URLs", In Proceedings of the 2nd International Conference on Discovery Science, Lecture Notes in Artificial Intelligence, Springer-Verlag, Vol. 1721, pp. 328--329, December 1999.

1998

• Hiroshi Sakamoto and Daisuke Ikeda, "Intractability of Decision Problems for Finite-Memory Automata", Universal Machines and Computations, 1998

1997

• Daisuke Ikeda and Hiroki Arimura, "On the Complexity of Languages Definable by Hereditary Elementary Formal Systems", In Proceedings of the 3rd International Conference Developments in Language Theory, pp. 223--235, 1997.

Non-reviewd Papers

2004

• Daisuke Ikeda, Nahoko Ando, and Shosaku Tanaka, "Loan History/Personal Information Usage and Privacy in Digital Libraries" (in Japanese, in print), March, 2005 (presentation).
• Toshiro Minami, Daisuke Ikeda, and Takuya Kida, "Prospect of Library Automation with RFID Technology" Digital Libraries No. 25&26, pp. 3--18, (Proceedings of the 77th IPSJ SIG FI, pp. 7--22), November, 2004 (presentation).
• Daisuke Ikeda, Yasuhiro Yamada, Shosaku Tanaka, and Hideki Matsumoto, "Collecting Web Pages with Templates using Distributions of Substring Frequencies," Proceedings of the 76th IPSJ SIG FI, pp. 15--20, September, 2004. (in Japanese)
• Yasuhiro Yamada, Daisuke Ikeda, Hiroshi Sakamoto, and Hiroki Arimura, "Information Extraction from the Web --Automatic Generation of Web Wrappers--," Journal of JSAI, Special Issue: "Text Processing for Intelligently Accessing Information on the WWW," Japan Society of Artificial Intelligence, Vol. 19, No. 3, pp. 302--310, May 2004. (in Japanese)
• Daisuke Ikeda, Yasuhiro Yamada, and Sachio Hirokawa, "Formulation of Template Discovery Problem and an Algorithm using Substring Amplification," Technical Report of ISICE, The Institute of Electronics, Information and Communication Engineers, Vol. 103, No. 622, pp. 69--76, January, 2004. (in Japanese) (presentation)

2003

• Daisuke Ikeda, Yasuhiro Yamada, and Sachio Hirokawa, "A Pattern Discovery Algorithm by Substring Amplification," Proceedings of the 47th IPSJ SIG MPS, pp. 45--48, December, 2003. (in Japanese) (presentation)
• Daisuke Ikeda, Yasuhiro Yamada, and Sachio Hirokawa, "Pattern Discovery from Distributions of String Frequency," Proceedings of the 72th IPSJ SIG FI, pp. 25--32, September, 2003. (in Japanese) (presentation)
• Yasuhiro Yamada, Daisuke Ikeda, and Sachio Hirokawa, "Automatic Tree and String Based Wrapper Generation for Semi-structured Documents," Proceedings of the 72th IPSJ SIG FI, pp. 115--122, September, 2003. (presentation)
• Yasuhiro Yamada, Daisuke Ikeda, and Sachio Hirokawa, "Frequency Analysis of Semi-structured Documents with Structural Similarity," Proceedings of the 2nd Forum on Information Technology (FIT2003), pp. 59--60, September, 2003. (in Japanese) (presentation)

2002

• Daisuke Ikeda, Yasuhiro Yamada, and Sachio Hirokawa, "Detecting Common Parts and Wrapper Generation for Multilingual Web Documents using Alternation Counts", Bulletin of Computing and Communications Center, Kyushu University, Vol. 3, pp. 7-14, March, 2002. (in Japanese) (presentation)

2001

• Yasuhiro Yamada, Daisuke Ikeda, and Sachio Hirokawa, "Eliminating Useless Parts in Semi-structured Documents using Alternation Counts," September 2001. (in Japanese)

2000

• Sachio Hirokawa, Daisuke Ikeda, and Tsuyoshi Taguchi, "Knowledge Base Construction from Link Structures," Shin'ichi Morishita and Satoru Miyano Editors, Discovery Science and Data Mining, pp. 272--281 (Chapter 27), May 2000. (in Japanese)

Patents

(I'm afraid that each title of the following patents is direct translation.)

• Daisuke Ikeda, Yasuhiro Yamada, and Sachio Hirokawa, "Common Pattern Discovery Device, Program, Medium, and Method," Japan Patent, Applicaton No. 2003-315129, September 2003.
• Daisuke Ikeda and Yasuhiro Yamada, "Collecting Files with Similar Structures Device, Program, Medium, and Method," Japan Patent, Applicaton No. 2003-101944, April 2003.
• Daisuke Ikeda, "Field Matching Device, Program, Medium, and Method," Japan Patent, Applicaton No. 2003-10528, January 2003.