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Research Fellow Ryohei HISANO

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Ryohei HISANO

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

[Research Themes]

Expertise

  • Macroeconomics, Economic Networks, Machine Learning, 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

Papers

  • Ryohei Hisano, “A New Approach to Building the Input-Output Table”, Working paper, http://papers.ssrn.com/sol3/papers.cfm?abstract_id=2612567, 2015
  • Ryohei Hisano, Tsutomu Watanabe, Takayuki Mizuno, Takaaki Ohnishi, Didier Sornette, “The Gradual Evolution of the Interfirm Buyer-Seller Network and Its Role in Aggregate Fluctuations”, Working Paper, http://papers.ssrn.com/sol3/papers.cfm?abstract_id=2612589, 2015.
  • 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】


  • “On the sales distribution of consumer electronics products”, 29th Econopysics Seminar, Tokyo Institute of Technology, May 29, 2010.

  • 【Conferences】


  • “On the sales distribution of consumer electronics products”, 29th Econopysics Seminar, Tokyo Institute of Technology, May 29, 2010.
  • “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.
  • “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.