Hiroshi Iyetomi

Niigata University

Professor of Mathematics

8050 Ikarashi-2-cho

Nishi-ku

Niigata, 9502181

Japan

  • Niigata University

SCHOLARLY PAPERS

14

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904

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15

CROSSREF CITATIONS

11

Scholarly Papers (14)

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1.

Interdependencies and Causalities in Coupled Financial Networks

I. Vodenska, H. Aoyama, Y. Fujiwara, H. Iyetomi, Y. Arai, Interdependencies and causalities in complex financial networks, PLoS ONE 11(3): e0150994. doi:10.1371/journal.pone.0150994 (2016), 29th Australasian Finance and Banking Conference 2016
Number of pages: 30 Posted: 08 Aug 2014 Last Revised: 11 May 2016
Irena Vodenska, Hideaki Aoyama, Yoshi Fujiwara, Hiroshi Iyetomi and Yuta Arai
Boston University Metropolitan College, RIKEN iTHEMS, University of Hyogo - Graduate School of Simulation Studies, Niigata University and Niigata University
Downloads 189 (178,759)
Citation 5

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Complex Principal Component Analysis, Hilbert Transform, Financial Networks, Foreign Exchange, Equity Markets

2.

Deflation/Inflation Dynamics: Analysis Based on Micro Prices

Number of pages: 60 Posted: 16 Feb 2015 Last Revised: 17 Feb 2015
Hiroshi Yoshikawa, Hideaki Aoyama, Yoshi Fujiwara and Hiroshi Iyetomi
University of Tokyo - Faculty of Economics, RIKEN iTHEMS, University of Hyogo - Graduate School of Simulation Studies and Niigata University
Downloads 120 (259,608)
Citation 7

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CPI, sticky prices, Hilbert transformation, CPCA

3.

Systemic Risk and Vulnerabilities of Bank Networks

Number of pages: 54 Posted: 10 Oct 2017 Last Revised: 12 Oct 2017
Irena Vodenska, Hideaki Aoyama, Alexander P. Becker, Yoshi Fujiwara, Hiroshi Iyetomi and Eliza Lungu
Boston University Metropolitan College, RIKEN iTHEMS, Boston University - Department of Physics, University of Hyogo - Graduate School of Simulation Studies, Niigata University and Kyoto University
Downloads 101 (292,995)
Citation 2

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Systemic Risk, Macroprudential Regulation, European Bank Network, Stress Testing, Portfolio Overlap

4.

Structure and Temporal Change of the Credit Network between Banks and Large Firms in Japan

Economics: The Open-Access, Open-Assessment E-Journal, Vol. 3, 2009-7
Number of pages: 20 Posted: 18 Dec 2010
Yoshi Fujiwara, Hideaki Aoyama, Yuichi Ikeda, Hiroshi Iyetomi and Wataru Souma
University of Hyogo - Graduate School of Simulation Studies, RIKEN iTHEMS, affiliation not provided to SSRN, Niigata University and ATR-NIS Network Informatics Laboratories
Downloads 93 (309,081)
Citation 1

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Banking, credit topology, bipartite network, systemic risk

5.

Bank-Firm Credit Network in Japan. An Analysis of a Bipartite Network

Number of pages: 9 Posted: 22 Jul 2014
Luca Marotta, Salvatore Miccichè, Yoshi Fujiwara, Hiroshi Iyetomi, Hideaki Aoyama, Mauro Gallegati and Rosario N. Mantegna
University of Palermo, University of Palermo - Department of Physics and Chemistry, University of Hyogo - Graduate School of Simulation Studies, Niigata University, RIKEN iTHEMS, Polytechnic University of Marche - Faculty of Economics and University of Palermo
Downloads 87 (322,248)
Citation 6

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Credit market, Networked market, Financial networks, Bipartite networks

6.

Interindustry Linkages of Prices: Analysis of Japan's Deflation

Downloads 61 (392,602)
Citation 1

Interindustry Linkages of Prices: Analysis of Japan's Deflation

Number of pages: 35 Posted: 16 Feb 2018 Last Revised: 22 Feb 2018
Yuichi Kichikawa, Hiroshi Iyetomi, Hideaki Aoyama, Yoshi Fujiwara and Hiroshi Yoshikawa
Niigata University, Niigata University, RIKEN iTHEMS, University of Hyogo - Graduate School of Simulation Studies and University of Tokyo - Faculty of Economics
Downloads 41 (475,959)

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CPI, Sticky Prices, Interindustry Linkages, Cluster, PCA

Interindustry Linkages of Prices - Analysis of Japan's Deflation

Number of pages: 65 Posted: 17 Jun 2019
Yuichi Kichikawa, Hiroshi Iyetomi, Hideaki Aoyama, Yoshi Fujiwara and Hiroshi Yoshikawa
Niigata University, Niigata University, RIKEN iTHEMS, University of Hyogo - Graduate School of Simulation Studies and University of Tokyo - Faculty of Economics
Downloads 20 (598,035)
Citation 2

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IPI, PPI, CPI, Sticky prices, Cluster, PCA

7.

Distribution of Labour Productivity in Japan Over the Period 1996-2006

Downloads 58 (402,436)
Citation 1

Distribution of Labour Productivity in Japan Over the Period 1996-2006

Economics: The Open-Access, Open-Assessment E-Journal, Vol. 3, 2009-14
Number of pages: 16 Posted: 18 Dec 2010
Yoshi Fujiwara, Hiroshi Iyetomi, Yuichi Ikeda and Wataru Souma
University of Hyogo - Graduate School of Simulation Studies, Niigata University, affiliation not provided to SSRN and ATR-NIS Network Informatics Laboratories
Downloads 30 (531,776)

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Labour productivity, marginal productivity, power law distribution, inequality

Distribution of Labour Productivity in Japan Over the Period 1996 - 2006

Economics Discussion Paper No. 2009-2
Number of pages: 13 Posted: 18 Dec 2010
Wataru Souma, Yuichi Ikeda, Hiroshi Iyetomi and Yoshi Fujiwara
ATR-NIS Network Informatics Laboratories, affiliation not provided to SSRN, Niigata University and University of Hyogo - Graduate School of Simulation Studies
Downloads 28 (543,774)
Citation 1

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Labour productivity, marginal labour productivity, inequality

8.

Hierarchical and Circular Flow Structure of Interfirm Transaction Networks in Japan

Number of pages: 23 Posted: 20 May 2018
Yuichi Kichikawa, Hiroshi Iyetomi, Takashi Iino and Hiroyasu Inoue
Niigata University, Niigata University, Niigata University and University of Hyogo - Graduate School of Simulation Studies
Downloads 54 (416,164)
Citation 3

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interfirm transaction network, hierarchical structure, potential flow, circular flow, Helmholtz-Hodge decomposition, community detection

9.

Hierarchical Communities in the Walnut Structure of the Japanese Production Network

PLoS ONE 13(8), 2018, DOI: 10.1371/journal.pone.0202739
Number of pages: 38 Posted: 01 Mar 2018 Last Revised: 08 Oct 2018
Abhijit Chakraborty, Yuichi Kichikawa, Takashi Iino, Hiroshi Iyetomi, Hiroyasu Inoue, Yoshi Fujiwara and Hideaki Aoyama
University of Hyogo - Graduate School of Simulation Studies, Niigata University, Niigata University, Niigata University, University of Hyogo - Graduate School of Simulation Studies, University of Hyogo - Graduate School of Simulation Studies and RIKEN iTHEMS
Downloads 44 (453,872)
Citation 5

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Production network, Giant strongly connected component, Walnut structure, Hierarchical structure of communities, Overexpressions, Input-output analysis

10.

Backbone of Credit Relationships in the Japanese Credit Market

Number of pages: 14 Posted: 22 Nov 2015
Luca Marotta, Salvatore Miccichè, Yoshi Fujiwara, Hiroshi Iyetomi, Hideaki Aoyama, Mauro Gallegati and Rosario N. Mantegna
University of Palermo, University of Palermo - Department of Physics and Chemistry, University of Hyogo - Graduate School of Simulation Studies, Niigata University, RIKEN iTHEMS, Polytechnic University of Marche - Faculty of Economics and University of Palermo
Downloads 26 (540,682)
Citation 1

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Complex networks, Information filtering, Statistically validated networks, Credit market

11.

Superstatistics of Labour Productivity in Manufacturing and Nonmanufacturing Sectors

Economics: The Open-Access, Open-Assessment E-Journal, Vol. 3, 2009-22
Number of pages: 18 Posted: 18 Dec 2010
Hideaki Aoyama, Yoshi Fujiwara, Yuichi Ikeda, Hiroshi Iyetomi and Wataru Souma
RIKEN iTHEMS, University of Hyogo - Graduate School of Simulation Studies, Hitachi Research Laboratory, Niigata University and ATR-NIS Network Informatics Laboratories
Downloads 24 (553,022)

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Labour productivity, superstatistics, Pareto's Law, business cycle, demand index

12.

Structure and Temporal Change of Credit Network between Banks and Large Firms in Japan

Economics Discussion Paper No. 2009-1
Number of pages: 16 Posted: 18 Dec 2010
Yoshi Fujiwara, Hideaki Aoyama, Yuichi Ikeda, Hiroshi Iyetomi and Wataru Souma
University of Hyogo - Graduate School of Simulation Studies, RIKEN iTHEMS, affiliation not provided to SSRN, Niigata University and ATR-NIS Network Informatics Laboratories
Downloads 17 (598,252)
Citation 2

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Banks-firms credit, credit topology, Bipartite network

13.

Superstatistics of Labour Productivity in Manufacturing and Nonmanufacturing Sectors

Economics Discussion Paper No. 2008-42
Number of pages: 15 Posted: 18 Dec 2010
Hideaki Aoyama, Yoshi Fujiwara, Yuichi Ikeda, Hiroshi Iyetomi and Wataru Souma
RIKEN iTHEMS, University of Hyogo - Graduate School of Simulation Studies, affiliation not provided to SSRN, Niigata University and ATR-NIS Network Informatics Laboratories
Downloads 17 (598,252)

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Labour productivity, superstatistics, Pareto's law, Business Cycle, demand index

14.

Empirical Evidence for Collective Motion of Prices with Macroeconomic Indicators in Japan

Number of pages: 28 Posted: 01 Mar 2018
Yuichi Kichikawa, Hiroshi Iyetomi, Hideaki Aoyama and Hiroshi Yoshikawa
Niigata University, Niigata University, RIKEN iTHEMS and University of Tokyo - Faculty of Economics
Downloads 13 (625,555)

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price changes, business cycles, exchange rate, Hilbert transformation, principal component analysis, dynamical linkage