Sitemap

Research Fellow Ryohei HISANO

160401_hisano_photo.jpg

Ryohei HISANO

Specially Appointed Research Associate, Graduate School of Information Science and Technology, The University of Tokyo

[Research Themes]

Expertise

  • Macroeconomics, Relational Machine Learning, Complex Networks, Data Science

Profile

Education

  • 2010.7-2013.8 ETH Zürich, D-MTEC, Doctor of Sciences (Dr Sc. ETH Zürich)
  • 2007.4-2010.3 Hitotsubashi University, Department of Economics, Master of Economics
  • 2003.4-2007.5 Keio University, Department of Economics, B.A. in Economics

Career

  • 2015.12- Specially Appointed Research Associate, Graduate School of Information Science and Technology, The University of Tokyo
  • 2014.4-2015.11 JSPS Research Fellow, The University of Tokyo, Postdoctoral researcher
  • 2013.10-2014.3 The National Institute of Informatics, Postdoctoral researcher
  • 2013.9 ETH Zürich, D-MTEC, Postdoctoral researcher
  • 2010.7-2013.8 ETH Zürich, D-MTEC, Research Assistant
  • 2007.4-2008.3 Nippon Keidanren (Japanese Business Federation), International cooperation group, Staff

Publications

    Ryohei Hisano, Taichi Kiwaki, "Daigaku Yonenkan No Data Science Ga 10 Jikan De Zaltuto Manaberu" (In Japanese), KADOKAWA, 2018

Papers

  • Ryohei Hisano, “Learning Topic Models by Neighborhood Aggregation”, preprint
  • Ryohei Hisano, "Semi-supervised Graph Embedding Approach to Dynamic Link Prediction", Complenet 2018, Northeastern University, Boston, Match 4-8, 2018.
  • Ryohei Hisano, Tsutomu Watanabe, Takayuki Mizuno, Takaaki Ohnishi, Didier Sornette, "The gradual evolution of buyer-seller networks and their role in aggregate fluctuations", Applied Network Science, 2017, Vol 2, 9.
  • Ryohei Hisano, "A new approach to building the interindustry input-output table using block estimation techniques", 2016 IEEE International Conference on Big Data (Big Data), 5-8 Dec. 2016.
  • Ryohei Hisano, Didier Sornette, Takayuki Mizuno, Takaaki Ohnishi, Tsutomu Watanabe, “High quality topic extraction from business news explains abnormal financial market volatility” , PLoS ONE, 2013, June, Vol 8, e64846
  • Ryohei Hisano, Didier Sornette, “Challenges to the Assessment of Time-to-Proof of Mathematical Conjectures”, The Mathematical Intelligencer, June, 2013.
  • Ryohei Hisano, Didier Sornette, Takayuki Mizuno, “Predicted and Verified Deviation from Zipf’s law in Ecology of Competing Products”, Physical Review E, 84, 026117, (2011).
  • Ryohei Hisano, Takayuki Mizuno, “Sales distribution of consumer electronics”, Physica A 390, 309-318, (2011).

Others

    【Invited Talks】


  • “Analysis of the Economic Watcher Survey using Machine Learning”, The Cabinet Office of Japan, January 31, 2018, Japan..
  • Technology Session, Panelist, 5th Global Forum on Responsible Business Conduct, 29-30 June 2017, OECD, Paris, France.
  • “Text Mining with Machine Learning”, Bank of Japan Machine Learning Seminar, February 16, 2017, Japan.
  • “Analysis of index of industrial production with Machine Learning”, Bank of Japan Machine Learning Seminar, February 9, 2017, Japan.
  • “Basics of Machine Learning”, Bank of Japan Machine Learning Seminar, February 6, 2017, Japan.
  • “On the sales distribution of consumer electronics products”, 29th Econopysics Seminar, Tokyo Institute of Technology, May 29, 2010.

  • 【Conferences】


  • “Semi-supervised Graph Embedding Approach to Dynamic Link Prediction”, Ryohei Hisano, Complenet 2018, Northeastern University, Boston, Match 4-8, 2018.
  • “A new approach to building the interindustry input-output table using block estimation techniques", Ryohei Hisano, 2016 IEEE International Conference on Big Data (Big Data), 5-8 Dec. 2016.
  • “Predicting Link dissolution in the interfirm buyers-eller network”, Ryohei Hisano, 2016 Conference on Complex Systems, Beurs Van Berlage, Amsterdam, The Netherlands, 19-22 September 2016
  • “Infinite Sparse Block Model with Text using 2DCRP”, The Research Institute of Economy, Trade and Industry Seminar, July 24, 2015.
  • “Role of the interfirm buyer-seller network in aggregate fluctuation and the effect of link renewal”, The Research Institute of Economy, Trade and Industry Seminar, Jan 29, 2015.
  • "Identification of network effect in the buyer-seller network", 8th International Conference on Computational and Financial Econometrics (CFE 2014), Dec 6, 2014.
  • "Large scale empirical analysis of buyer-seller network and its role in the business cycle", Computationally intensive Methods in Statistics and Econometrics Satellite meeting of COMPSTAT 2014, Aug 23, 2014.
  • “Mining social structures from hundred million business news”, ECCS 2012, Sep 3-7, 2012.
  • “Birth-death proportional growth model and social dynamics”, W.E.H.I.A, 17th Annual Workshop on Economic Heterogeneous Interacting Agents, University of Pantheon-Assas, Paris II, July 21-23, 2012.
  • “Birth-death proportional growth model and social dynamics”, W.E.H.I.A, 17th Annual Workshop on Economic Heterogeneous Interacting Agents, University of Pantheon-Assas, Paris II, July 21-23, 2012.
  • “Deviation from Zipf’s law in ecology of competing products”, International Workshop on Coping with Crises in Complex Socio-Economic Systems, ETH Zürich, June 20-24, 2011.
  • “Market share of household electrical appliances”, Complex’09, Surugadai Memorial Hall, Chuo University, Nov 4-7, 2009.
  • “Sales distribution of consumer electronics”, Econophysics Colloquium 2009, Centro Ettore Maiorana Erice, Oct 25-31, 2009.