• Mizuki Oka and Yutaka Matsuo: Mining Scholarly Semantic Networks from the Web, Proc. 12th International Conference Information Visualisation (IV08), July 2008
• Danushka Bollegala, Yutaka Matsuo, and Mitsuru Ishizuka: Mining for Personal Name Aliases on the Web, poster, Proc. 17th International World Wide Web Conference (WWW2008), April 2008
• Danushka Bollegala, Yutaka Matsuo, and Mitsuru Ishizuka: Identification of Personal Name Aliases on the Web, WWW2008 Workshop on Social Web Search and Mining, April 2008
• YingZi Jin, Yutaka Matsuo, and Mitsuru Ishizuka: Ranking Entities on the Web using Social Network Mining and Ranking Learning, WWW2008 Workshop on Social Web Search and Mining, April 2008
• Tadanobu Furukawa, Yutaka Matsuo, Ikki Ohmukai, Koki Uchiyama, and Mitsuru Ishizuka: Extracting Topics and Innovators Using Topic Diffusion Process in Weblogs, Poster, Proc. International Conference on Weblogs and Social Media (ICWSM), March 2008
• Jie Yang, Yutaka Matsuo and Mitsuru Ishizuka: An Augmented Tagging Scheme with Triple Tagging and Collective Filtering, Proc. 2007 IEEE/WIC/ACM International Conference on Web Intelligence (WI07), pp.35-38, Silicon Valley, CA, USA (2007.11)
• Yutaka Matsuo and Hikaru Yamamoto: Diffusion of Recommendation through a Trust Network, Proc. International Conference on Weblogs and Social Media (ICWSM), pp. 287-288,(2007.3)
• Yoshiyuki Namamura, Yuko Namimatsu, Nobuo Miyazaki, Yutaka Matsuo, and Takuichi Nishimura: A Method for Estimating Position and Orientation with a Topological Approach using Multiple Infrared Tags, Fourth International Conference on Networked Sensing Systems (INSS 07), (2007.6)
• Eiko Kin, Yutaka Matsuo, Mitsuru Ishizuka: Extracting a Social Network among Entities by Web Mining, ISWC'06 Workshop on Web Content Mining with Human Language Technologies (2006.11)
• Masahiro Hamasaki, Yutaka Matsuo, Keisuke Ishida, Yoshiyuki Nakamura, Takuichi Nishimura, Hideaki Takeda: Community Focused Social Network Extraction, ASWC2006 (2006.9)
• Tadanobu Furukawa, Tomofumi Matsuzawa, Yutaka Matsuo, Koki Uchiyama, Masayuki Takeda: Behavioral Analysis based on Relations in Weblogs, ASWC2006 (2006.9)
• Tom Hope, Masahiro Hamasaki, Yutaka Matsuo, Takuichi Nishimura: Strengthening Community with Embodied Social Networks, Proc. HCI2006 (2006.8) [PDF file]
• Danushka Bollegara, Yutaka Matsuo, and Mitsuru Ishizuka: Extracting Key Phrases to Disambiguate Personal Name Queries in Web Search, Workshop on Computational Linguistics in Information Retrieval (CLIIR) at COLING-ACL 2006 (2006.7)
• Masahiro Hamasaki, Yutaka Matsuo, Keisuke Ishida, Yoshiyuki Nakamura, Takuichi Nishimura: An integrated method for social network extraction, poster, WWW2006 (2006.5)
• Yuki Yasuda and Yutaka Matsuo: Making Invisible Colleges Visible -- AI Researchers' network Positions and Productivity, International Sunbelt Social Network Conference (Sunbelt XXVI) (2006.4)
• Tadanobu Furukawa, Yutaka Matsuo, Tomofumi Matsuzawa, Masayuki Takeda and Koki Uchiyama: Users' Behavioral Analysis on Weblogs, AAAI Spring 2006 Symposia on Computational Approaches to Analysing Weblogs(AAAI-CAAW2006), (2006.3) [PDF file]
• Danushka Bollegala, Yutaka Matsuo, Mitsuru Ishizuka: Extracting Key Phrases to Disambiguate Personal Names on the Web. CICLing 2006: 223-234, (2006.2) [PDF file]
• Junichiro Mori, Tatsuhiko Sugiyama, Yutaka Matsuo: Real-world oriented information sharing using social networks. Proc. ACM-SIG GROUP 2005: 81-84, (2005.11)
• Naoaki Okazaki, Yutaka Matsuo, and Mitsuru Ishizuka: Improving chronological ordering of sentences extracted from multiple newspaper article, ACM Transactions on Asian Language Information Processing (TALIP), Volume 4, Issue 3 (2005.9)
• Tadanobu Furukawa, Tomofumi Matsuzawa, Yutaka Matsuo, Koki Uchiyama, Masayuki Takeda: Analysis of User’s Relation and Reading Activity in Weblogs, ANDI'05(The First International Workshop on Agent Network Dynamics and Intelligence), (2005.6) [PDF file]
• Yutaka Matsuo and Yuki Yasuda: An Analysis of Researcher Network Evolution on the Web, ANDI'05, (2005.6) [PDF file]
• Kosuke Shinoda, Yutaka Matuo, Hideyuki Nakashima: Dynamics of network evolution based on mutual consensus, ANDI'05, (2005.6)
• Juichiro Mori, Yutaka Matsuo, Koiti Hasida, and Mitsuru Ishizuka: Web Mining Approach for a User-centered Semantic Web, Workshop on End User Aspects of the Semantic Web, (2005.5)
• Junichiro Mori, Tatsuhiko Sugiyama, Yutaka Matsuo, Hironori Tomobe, Mitsuru Ishizuaka: Real-world Oriented Information Sharing Using Social Network, XXV International Sunbelt social network conference, (2005.2)
• Peter Mika, Tom Elfring, Peter Groenewegen, Yutaka Matsuo: Shoulders To Stand On: Network Analysis Of The Semantic Web Community, XXV International Sunbelt social network conference, (2005.2)
• Yutaka Matsuo, Junichiro Mori, Yohei Asada, Koiti Hasida, Mitsuru Ishizuka: Mining Large-Scale Social Network Of Researcher From The Web, XXV International Sunbelt social network conference, (2005.2)
• Yutaka Matsuo: Network Structure and its Emergence, International workshop on "Collaborate! In search for Intelligent Social Infrastructure", invited talk, Keio University, (2005.1)
• Yutaka Matsuo: Social Knowledge for Ubiquitous Environment -- Human Network and Spatial Semantics --, International Symposium on Life-World Semantics and Digital City Design, (2004.12)
• Junichiro Mori, Yutaka Matsuo, Mitsuru Ishizuka, Boi Faltings: Keyword Extraction from the Web for Person Metadata Annotation, ISWC Workshop Notes VIII (W8) - 4th International Workshop on Knowledge Markup and Semantic Annotation (Semannot2004) (in conjunction with 3rd Int'l Semantic Web Conference (ISWC2004)), Hiroshima, Japan, pp.51-60, (2004.11)
• Junichiro Mori, Yutaka Matsuo, Mitsuru Ishizuka, Boi Faltings: Keyword Extraction from the Web for Creation of Person Metadata, Poster Abstracts 3rd Int'l Semantic Web Conference (ISWC2004), Hiroshima, Japan, pp.45-46, (2004.11)
• Tomoya Taniguchi, Yutaka Matsuo, Koiti Hashida, mitsuru Ishizuka: Detecting and Analyzing Blog Community, Poster Abstracts 3rd Int'l Semantic Web Conference (ISWC2004), Hiroshima, Japan, pp.45-46, (2004.11)
• Shigeyoshi Hiratsuka, Yutaka Matsuo, Akio Sashima, Akira Takagi, Naoaki Izumi, and Koiti Kurumatani: Smart Navigation by Lightweight Components Coordination in Ubiquitous Computing, IROS2004, (2004.9)
• Yohei Asada, Yutaka Matsuo and Mitsuru Ishizuka: A method to automatically find foaf:Groups based on the cooccurrence of people with keywords in the web, Workshop notes of 1st Workshop on Friend of a Friend, Social Networking and Semantic Web, (2004.9) [html file]
• Junichiro Mori, Yutaka Matsuo, Mitsuru Ishizuka and Boi Faltings: Keyword Extraction from the Web for FOAF Mdetadata, Workshop notes of 1st Workshop on Friend of a Friend, Social Networking and Semantic Web, (2004.9) [html file]
• Yutaka Matsuo, Masahiro Hamasaki, Junichiro Mori, Hideaki Takeda and Koiti Hasida: Ontological Consideration on Human Relationsihp Vobabulary for FOAF, Workshop notes of 1st Workshop on Friend of a Friend, Social Networking and Semantic Web, (2004.9) [html file]
• Naoaki Okazaki and Yutaka Matsuo and Mitsuru Ishizuka: Coherent Arrangement of Sentences Extracted from Multiple Newspaper Articles, PRICAI 2004: Trends in Artificial Intelligence (C. Zhang, H. W. Guesgen, and W. K. Yeap (Eds.)). Lecture Notes in AI, LNAI 3157, Springer, pp.888-891 (Proc. 8th Pacific Rim Int'l Conf. on Artificial Intelligence, Auckland, New Zealand), (2004.8)
  [PDF file]
• Yutaka Matsuo, Akira Takagi, Shigeyoshi Hiratsuka, Koiti Hasida, and Hideyuki Nakashima: Spatial Function Representation and Retrieval, Proc. PRICAI2004, LNAI3157, (2004.8)
• Naoaki Okazaki and Yutaka Matsuo and Mitsuru Ishizuka: Coherent Arrangement of Sentences Extracted from Multiple Newspaper Articles, PRICAI 2004 Pre-Conference Workshop Notes (Workshop of Language Sense on Computer), Auckland, New Zealand, (2004.8)
• Naoaki Okazaki and Yutaka Matsuo and Mitsuru Ishizuka: TISS: An Integrated Summarization System for TSC-3, Working Notes of the Fourth NTCIR Workshop Meeting (NTCIR-4), pp.436-443, 2004
• Ratanachai Sombatsrisomboon, Yutaka Matsuo, and Mitsuru Ishizuka: Aquisition of Hypernyms and Hyponyms from the WWW, Proc. of 2nd Int'l Workshop on Active Mining (AM2003), pp.7-13, (in conjunction with Int'l Sympo. on Methodologies for Intelligent Systems), 2003
• Yutaka Matsuo, Hironori Tomobe, Koiti Hasida, Mitsuru Ishizuka: Mining and Annotating Social Relationship, poster, ISWC2003, 2003
• Yutaka Matsuo, Hironori Tomobe, Koiti Hasida, Mitsuru Ishizuka: Mining Social Network of Conference Participants from the Web, Web Intelligence 2003, 2003
• Hironori Tomobe, Yutaka Matsuo, Koiti Hasida, Mitsuru Ishizuka: Social Network Extraction of Conference Participants, 12th International WWW Conference, poster, S27, 2003 [html file]
• Yutaka Matsuo, Mitsuru Ishizuka: Keyword Extraction from a Single Document using Word Co-occurrence Statistical Information, Proc. 16th Int'l FLAIRS Conf., pp. 392--396, 2003 [PDF file]
• Naoaki Okazaki, Yutaka Matsuo, Naohiro, Matsumura and Mitsuru Ishizuka: Sentence Extraction by Spreading Activation with Refined Similarity Measure, Proc. 16th Int'l FLAIRS Conf., pp. 407--411, 2003 [PDF file]
• Yutaka Matsuo, Yukio Ohsawa, and Mitsuru Ishizuka: Average-clicks: A New Measure of Distance on the World Wide Web, Journal of Intelligent Information Systems, Vol. 20, No. 1, pp. 51--62, 2003 [PDF file]
• Naoaki Okazaki, Yutaka Matsuo, Naohiro Matsumura and Mitsuru Ishizuka: Sentence Extraction by Spreading Activation with Refined Similarity Measure, IEICE Transactions on Information and Systems, (Special Issue on Text Processing for Information Access), Vol.E86-D, No.9, pp.1687-1694, 2003 [PDF file]
• Yutaka Matsuo, Yukio Ohsawa: Finding Meaning of Clusters, AAAI Fall Symposium, Technical Report FS-02-01, pp.7-13, North Falmouth, USA, November 2002 [PDF file]
• Yutaka Matsuo, Hayato Fukuta, and Mitsuru Ishizuka: Browsing Support by Highlighting Keywords based on a User's Browsing History, IEEE SMC-2002, Hammamet, Tunisia, October 2002 [PDF file]
• Naoaki Okazaki, Yutaka Matsuo, Naohiro Matsumura, Hironori Tomobe, and Mitsuru Ishizuka: Extracting Characteristic Sentences from Related Documents, Proc. 6th Int'l Conf. on Knowledge-based Intelligent Information Engineering Systems & Applied Technologies(KES2002), IOS Press/Ohmsha (ISSN:0922-6389), Crema, Italy, pp. 1257--1261, September 2002. [PDF file]
• Yutaka Matsuo: Clustering using Small World Structure, Proc. 6th Int'l Conf. on Knowledge-based Intelligent Information Engineering Systems & Applied Technologies(KES2002), IOS Press/Ohmsha (ISSN:0922-6389), Crema, Italy, pp.1252-1256, September 2002 [PDF file]
• Yutaka Matsuo, Yukio Ohsawa, and Mitsuru Ishizuka: Mining messages in an Electronic Message Board by Repetetion of Words, PRICAI workshop on Chance Discovery, pp.51--56, Tokyo, 2002 [PDF file]
• Y. Ohsawa, H. Soma, Y. Matsuo, N. Matsumura, and M. Usui: Featuring Web Communities based on Word Co-occurrence Structure of Communications, 11th International WWW conference, 2002 [html file]
• Yutaka Matsuo, Yukio Ohsawa and Mitsuru Ishizuka: A Subjective Measure of Distance on the WWW, 11th International WWW conference, Poster Session, 2002
• Naohiro Matsumura, Yutaka Matsuo, Yukio Ohsawa and Mitsuru Ishizuka: Discovering Emerging Topics from WWW, Journal of Contingencies and Crisis Management, Vol. 10, No. 2, pp. 73--81, 2002 [PDF file]
• Yutaka Matsuo, Yukio Ohsawa and Mitsuru Ishizuka: KeyWorld: Extracting Keywords in a Document as a Small World, DS-2001, pp. 271-281, 2001 [PDF file]
• Yutaka Matsuo, Yukio Ohsawa and Mitsuru Ishizuka: Average-clicks: A New Measure of Distance on the World Wide Web, Proc. Web Intelligence (WI2001), LNAI 2198, pp.125-130, 2001 [PDF file]
• Yutaka Matsuo, Yukio Ohsawa and Mitsuru Ishizuka: Discovering Hidden Relation behind a Link, KES-2001, pp.1183-1187, 2001 [PDF file]
• Yutaka Matsuo, Yukio Ohsawa and Mitsuru Ishizuka: A Document as a Small World, SCI 2001, Vol.8, pp.410-414, 2001 [PDF file]
• Yutaka Matsuo, Yukio Ohsawa, Mitsuru Ishizuka: Document as a Small World, JSAI 2001 International Workshop, (New Frontiers in Artificial Intelligence, Joint JSAI 2001 Workshop Post-Proceedings, LNAI 2253, pp.444-448), May 2001
• Hiroshi Taira, Yutaka Matsuo, Yukio Ohsawa, Mitsuru Ishizuka: AreaView2001: A WWW Organization System with KeyGraph Technology, JSAI Workshop, May 2001
• Mitsuru Ishizuka, Yutaka Matsuo and Helmut Prendinger: Polynomial-time Cost-based Hypothetical Reasoning: Propositional and Predicate Logic Cases, Dagstuhl seminar on Deduction, 2001 [PDF file]
• Yutaka Matsuo, Mitsuru Ishizuka: Fast Hypothetical Reasoning by Parallel Processing, PRICAI'00 Poster Session, Lecture Notes in Artificial Intelligence 1886, p.790 [PDF file]
• Yutaka Matsuo, Mitsuru Ishizuka: Fast Hypothetical Reasoning by Parallel Processing, AAAI 2000 Workshop "Leveraging Probability and Uncertainty in Computation" organized by Carla P. Gomes and Holger Hoos, at Austin, Texas, USA, July 31 - Aug 3, 2000 [PDF file]
• Yutaka Matsuo, Akihiko Yokoyama: Optimization of Installation of FACTS Device in Power System Planning by both Tabu Search and Nonlinear Programming Methods, ISAP'99(Intelligent System Application to Power System) pp.250-254 at Rio de Janeiro, Brazil 4th-8th April 1999 [PDF file]
• Mitsuru Ishizuka and Yutaka Matsuo: SL Method for Computing a Near-optimal Solution using Linear and Non-linear Programming in Cost-based Hypothetical Reasoning, PRICAI'98: Topics in Artificial Intelligence, Lecture Notes in Artificial Intelligence 1531, pp.611-625 at Singapore, 22nd-27th November 1998 [PDF file]

Many papers are written also in Japanese.