204 citations · 937 across the 33 of their papers we have counts for
7 papers · 1 filter
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…
Visualizing a large-scale structure of production network by N-body simulation
Yoshi Fujiwara
Our recent study of a nation-wide production network uncovered a community structure, namely how firms are connected by supplier-customer links into tightly-knit groups with high d…
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…