60 citations · 152 across the 17 of their papers we have counts for
11 papers · 1 filter
Backbone of credit relationships in the Japanese credit market
Luca Marotta, Salvatore Miccichè, Yoshi Fujiwara +4
We detect the backbone of the weighted bipartite network of the Japanese credit market relationships. The backbone is detected by adapting a general method used in the investigatio…
Bank-firm credit network in Japan. An analysis of a bipartite network
Luca Marotta, Salvatore Miccichè, Yoshi Fujiwara +4
We present an analysis of the credit market of Japan. The analysis is performed by investigating the bipartite network of banks and firms which is obtained by setting a link betwee…
Econophysics on Real Economy -The First Decade of the Kyoto Econophysics Group-
Hideaki Aoyama, Yoshi Fujiwara, Yuichi Ikeda +2
Research activities of Kyoto Econophysics Group is reviewed. Strong emphasis has been placed on real economy. While the initial stage of research was a first high-definition data a…
Fluctuation-Dissipation Theory of Input-Output Interindustrial Correlations
Hiroshi Iyetomi, Yasuhiro Nakayama, Hideaki Aoyama +3
In this study, the fluctuation-dissipation theory is invoked to shed light on input-output interindustrial relations at a macroscopic level by its application to IIP (indices of in…
What Causes Business Cycles? Analysis of the Japanese Industrial Production Data
Hiroshi Iyetomi, Yasuhiro Nakayama, Hiroshi Yoshikawa +4
We explore what causes business cycles by analyzing the Japanese industrial production data. The methods are spectral analysis and factor analysis. Using the random matrix theory,…
A Paradigm Shift from Production Function to Production Copula: Statistical Description of Production Activity of Firms
H. Iyetomi, H. Aoyama, Y. Fujiwara +2
Heterogeneity of economic agents is emphasized in a new trend of macroeconomics. Accordingly the new emerging discipline requires one to replace the production function, one of key…
Agent-Based Model Approach to Complex Phenomena in Real Economy
Hiroshi Iyetomi, Hideaki Aoyama, Yoshi Fujiwara +2
An agent-based model for firms' dynamics is developed. The model consists of firm agents with identical characteristic parameters and a bank agent. Dynamics of those agents is desc…
Superstatistics of Labour Productivity in Manufacturing and Nonmanufacturing Sectors
Hideaki Aoyama, Yoshi Fujiwara, Yuichi Ikeda +2
Labour productivity distribution (dispersion) is studied both theoretically and empirically. Superstatistics is presented as a natural theoretical framework for productivity. The d…
Labour Productivity Superstatistics
Hideaki Aoyama, Hiroshi Yoshikawa, Hiroshi Iyetomi +1
We discuss superstatistics theory of labour productivity. Productivity distribution across workers, firms and industrial sectors are studied empirically and found to obey power-dis…
Productivity Dispersion: Facts, Theory, and Implications
Hideaki Aoyama, Hiroshi Yoshikawa, Hiroshi Iyetomi +1
We study productivity dispersions across workers, firms and industrial sectors. Empirical study of the Japanese data shows that they all obey the Pareto law, and also that the Pare…
Agent Simulation of Chain Bankruptcy
Yuichi Ikeda, Yoshi Fujiwara, Wataru Souma +2
We have conducted an agent-based simulation of chain bankruptcy. The propagation of credit risk on a network, i.e., chain bankruptcy, is the key to nderstanding largesized bankrupt…