Research Fellow Ryohei HISANO
Ryohei HISANO
Specially Appointed Research Associate, Graduate School of Information Science and Technology, The University of Tokyo
[Research Themes]
Profile
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.