Yoji Kiyota, Ph.D. in Informatics

Principal Investigator, AI Strategy Division, LIFULL Co., Ltd.

Chief Executive Officer, Medimpl Corporation

Visiting Researcher, Center for Spacial Information Science, The University of Tokyo

Researcher, School of Science and Technology for Future Life, Tokyo Denki University


Bio: Born in Fukuoka, Japan in 1975. Since being assigned to a natural language processing laboratory at Kyoto University in 1997, he has been consistently involved in R&D around computer science and artificial intelligence (AI), such as dialog systems, text mining, information recommendation, and image processing. In 2007, when he was an assistant professor of the University of Tokyo, he co-founded Littel Corporation, a startup company from the University of Tokyo. After Littel was acquired by LIFULL Co., Ltd. in 2011, he has been engaged in R&D in the real estate tech field at LIFULL. Responsible for the editorial committee of the Japanese Society for Artificial Intelligence (JSAI) as the vice chairman, and the secretary of the SIG in database system, the Information Processing Society of Japan (IPSJ). Since 2018, he has concurrently held the position of CEO, Medimpl Corporation, whose mission is to support AI social implementation and industry-academia collaboration.

Japanese page

Facebook
Twitter
LinkedIn
NewsPicks
Speaker Deck

Career History

April 2018 - present: Chief Executive Officer, Medimpl Corporationn

Implementation and utilization of AI and data science in the field of medical and business matching

  • Development of nurse scheduling systems for hospitals
  • Business matching promotion by text miningg
  • Advisory focusing on industry-academia collaborationn

April 2011 - present: Principal Investigator, LIFULL Co., Ltd.

R&D of AI utilization centering on real estate informationn

  • deep learning for real estate property images
  • Real estate information recommendationn
  • Contributions to promote research communities for Real Estate Techh
  • Data analysis of nursing home referral service

August 2007 - March 2011: Senior Researcher / Chief Technology Officer, Littel Corporationn

Business development of library information navigation system and big data processing technologyy

  • Deployment of Hadoop-based Big Data Processing Infrastructuree
  • Development of library information navigation systemm
  • Buyout by NEXT Co., Ltd. (now: LIFULL Co., Ltd.) in February 2011

December 2004 - March 2012: Assistant Professor / Special Lecturer, Information Technology Center, The University of Tokyoo

Studies on natural language processing application on Library information navigation systemm

  • Text mining of case reports
  • Automatic Question Answering System Using Large Text as Knowledgee

February 2004 - November 2004: Postdoctoral researcher, Kyoto University / Japan Science and Technology Agency

Research on voice interface of an automatic question answering system

April 2003 - January 2004: Industry-academia-government collaboration researcher, The University of Tokyo

Research on an automatic question answering system using large-scale text as knowledge

Research on Automatic Question Answering System Using Large-scale Text as Knowledge

<Concurrent posts>

April 2019 - present: Visiting Researcher, Center for Spacial Information Science, The University of Tokyo

November 2012 - present: Researcher, School of Science and Technology for Future Life, Tokyo Denki University

Education

2004: Ph.D in Informatics, Kyoto University

dissertation: Dialog Navigator: A Navigation System from Vague Questions to Specific Answers based on Real-World Text Collections, Graduate School of Informatics, Kyoto University, 2004. [citation] [PDF]

2000: Master in Informatics, Kyoto University

1998: Bachelor of Electricity Engineering, Kyoto University

1994: graduated from Kurume University Fusetsu High School, Fukuoka, Japan

Major Publications

Mining User Experience through Crowdsourcing: A Property Search Behavior Corpus Derived from Microblogging Timelines

Yoji Kiyota, Yasuyuki Nirei, Kosuke Shinoda, Satoshi Kurihara, and Hirohiko Suwain Proceedings of 2015 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology (WI-IAT), pp. 17-21, Singapore, 2015. [citation]

Discovering Serendipitous Information from Wikipedia by Using its Network Structure

Yohei Noda, Yoji Kiyota, and Hiroshi Nakagawain Proceedings of the Fourth International AAAI Conference on Weblogs and Social Media (ICWSM 2010), pp. 299-302, Washington D.C., USA, 2010. [citation] [PDF]

Exploitation of the wikipedia category system for enhancing the value of LCSH

Yoji Kiyota, Hiroshi Nakagawa, Satoshi Sakai, Tatsuya Mori, and Hidetaka Masudain Proceedings of the 9th ACM/IEEE-CS joint conference on Digital libraries (JCDL'09), pp. 411-412, Austin, Texas, USA, 2009. [citation] [PDF]

Automated Subject Induction from Query Keywords through Wikipedia Categories and Subject Headings

Yoji Kiyota, Noriyuki Tamura, Satoshi Sakai, Hiroshi Nakagawa, and Hidetaka Masudain Proceedings of the Sixth International Conference on Language Resources and Evaluation (LREC'08), pp. 3479-3482, Marrakech, Morocco, 2008. [citation] [PDF]

A Domain Ontology Production Tool Kit Based on Automatically Constructed Case Frames

Yoji Kiyota, and Hiroshi Nakagawain Proceedings of the Fifth International Conference on Language Resources and Evaluation (LREC'06), pp. 1482-1487, Genoa, Italy, 2006. [citation] [PDF]

Browsing System for Weblog Articles Based on Automated Folksonomy

Tsutomu Ohkura, Yoji Kiyota, and Hiroshi Nakagawain Proceedings of the WWW2006 Workshop on the Weblogging Ecosystem, Edinburgh, Scotland, 2006. [citation] [PDF]

Dialog navigator: A spoken dialog QA system based on large text knowledge base

Yoji Kiyota, Sadao Kurohashi, Teruhisa Misu, Kazunori Komatani, Tatsuya Kawahara, and Fuyuko Kidoin the Companion Volume to the Proceedings of 41st Annual Meeting of the Association for Computational Linguistics (ACL 2003), Sapporo, Japan, 2003. [citation] [PDF]

Dialog navigator: A question answering system based on large text knowledge base

Yoji Kiyota, Sadao Kurohashi, and Fuyuko Kidoin Proceedings of the 19th international conference on Computational linguistics (COLING 2002), Taipei, 2002. [citation] [PDF]

Automatic Summarization of Japanese Sentences and its Application to a WWW KWIC Index

Yoji Kiyota, and Sadao Kurohashiin Proceedings of 2001 Symposium on Applications and the Internet (SAINT 2001), pp. 120-127, San Diego, California, USA, 2001. [citation] [PDF]

For more details, see Google Scholar / dblp / researchmap.

Public Activities

<Current Activities>

  • Representative, the Japanese Society for Artificial Intelligence (2019-)
  • Vice chairman, Editorial committee of the Japanese Society for Artificial Intelligence (2018-)
  • Secretary, SIG in Database System, the Information Processing Society of Japan (responsible for industry-academia collaboration) (2017-)
  • Editorial committee member, IPSJ Transactions on Database (2017-)
  • Committee member, SIG in Aging Society Design, the Information Processing Society of Japan (2018-)
  • Committee member, Journal management committee, Information Science and Technology Association of Japan (2018-)
  • Chair, organized session "Consumer Electronics as Real Estate Tech", IEEE GCCE 2019 in Osaka, Japan (2019)
  • Co-organizer, organized session "Real Estate and Artificial Intelligence", the Annual Conference of the Japanese Society for Artificial Intelligence (2017, 2018, 2019)
  • Co-representative, Code4Lib JAPAN (2011-)

<Past Activities>

  • Editorial committee member, the Japanese Society for Artificial Intelligence (2014-2018)
  • Secretary in industry-academia collaboration, WebDB Forum Series (2015, 2016, 2017, 2018)
  • Co-chair, International Workshop on Multimedia for Real Estate Tech, ACM ICMR 2018 in Yokohama, Japan (2018)
  • Sponsorship co-chair, The 4th IEEE International Conference on Data Science and Advanced Analytics (IEEE DSAA 2017) in Tokyo, Japan (2017)
  • Committee member, SIG in Database System, the Information Processing Society of Japan (2012-2014)
  • Local organizing committee co-chair, the 72nd Convention of the Information Processing Society of Japan (2010)
  • Co-president, "Mining expedition study group", a study group to explore the future of libraries (2010-2014)
  • Editorial committee member, the Association for Natural Language Processing (2010-2012)
  • Local organizing committee co-chair, the annual meeting of the Association for Natural Language Processing (2008)
  • Program committee co-chair, the annual meetings of the Association for Natural Language Processing (2006, 2007)
  • Program committee co-chair, the annual symposiums of Young Researcher Association for NLP Studies (2006, 2007)
  • Committee member, SIG in Natural Language Processing, the Information Processing Society of Japan (2006-2010)

Awards