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Dynamic network data have become ubiquitous in social network analysis, with new information becoming available that captures when friendships form, when corporate transactions happen and when countries interact with each other. Flexible…

Applications · Statistics 2023-05-16 Yunran Chen , Alexander Volfovsky

Critical for policy-making and business operations, the study of global supply chains has been severely hampered by a lack of detailed data. Here we harness international firm-level transaction data covering 20m global firms, and 1 billion…

General Economics · Economics 2025-11-24 Neave O'Clery , Ben Radcliffe-Brown , Thomas Spencer , Daniel Tarling-Hunter

Business cycles tend to comove across countries. However, standard models that attribute comovement to propagation of exogenous shocks struggle to generate a level of comovement that is as high as in the data. In this paper, we consider…

General Economics · Economics 2024-09-13 Marco Pangallo

European Monetary Union continues to be characterised by significant macroeconomic imbalances. Germany has shown increasing current account surpluses at the expense of the other member states (especially the European periphery). Since the…

General Economics · Economics 2022-09-21 Giovanni Carnazza , Pierluigi Vellucci

The process of European integration resulted in a marked increase in transnational economic flows, yet regional inequalities along many developmental indicators remain. We analyze the unevenness of European economies with respect to the…

Economics · Quantitative Finance 2017-11-08 Balazs Vedres , Carl Nordlund

Despite global efforts to harmonize international trade statistics, our understanding of digital trade and its implications remains limited. Here, we introduce a method to estimate bilateral exports and imports for dozens of sectors…

General Economics · Economics 2024-07-25 Viktor Stojkoski , Philipp Koch , Eva Coll , Cesar A. Hidalgo

COVID-19 is a new pandemic disease that is affecting almost every country with a negative impact on social life and economic activities. The number of infected and deceased patients continues to increase globally. Mathematical models can…

Despite considerable scholarly attention on the institutional and normative aspects of development cooperation, its longitudinal dynamics unfolding at the global level have rarely been investigated. Focusing on aid, we examine the evolving…

Physics and Society · Physics 2022-10-12 Koji Oishi , Hiroto Ito , Yohsuke Murase , Hiroki Takikawa , Takuto Sakamoto

During the ongoing COVID-19 pandemic, mathematical models of epidemic spreading have emerged as powerful tools to produce valuable predictions of the evolution of the pandemic, helping public health authorities decide which intervention…

Dynamical Systems · Mathematics 2021-11-18 Lorenzo Zino , Ming Cao

Natural and anthropogenic disasters frequently affect both the supply and demand side of an economy. A striking recent example is the Covid-19 pandemic which has created severe disruptions to economic output in most countries. These direct…

General Economics · Economics 2021-05-06 Anton Pichler , J. Doyne Farmer

Based on the approach of flow distances, the international trade flow system is studied from the perspective of multi-layer flow network. A model of multi-layer flow network is proposed for modelling and analyzing multiple types of flows in…

Physics and Society · Physics 2015-11-20 Bin Shen , Jiang Zhang , Qiuhua Zheng

We use bank-level balance sheet data from 2005 to 2010 to study interactions within the banking system of five emerging countries: Argentina, Brazil, Mexico, South Africa, and Taiwan. For each country we construct a financial network based…

Statistical Finance · Quantitative Finance 2015-07-08 Diego Aparicio , Daniel Fraiman

International trade fluxes evolve as countries revise their portfolios of trade products towards economic development. Accordingly products' shares in international trade vary with time, reflecting the transfer of capital between distinct…

Trading and Market Microstructure · Quantitative Finance 2018-01-16 Matthieu Barbier , D. -S. Lee

Food security is a critical issue closely linked to human being. With the increasing demand for food, international trade has become the main access to supplementing domestic food shortages, which not only alleviates local food shocks, but…

Physics and Society · Physics 2024-08-07 Yin-Ting Zhang , Wei-Xing Zhou

International trade has been increasingly organized in the form of global value chains (GVCs) where different stages of production are located in different countries. This recent phenomenon has substantial consequences for both trade policy…

Physics and Society · Physics 2019-02-20 Zhen Zhu , Greg Morrison , Michelangelo Puliga , Alessandro Chessa , Massimo Riccaboni

Knowledge of the current state of economies, how they respond to COVID-19 mitigations and indicators, and what the future might hold for them is important. We use recently-developed generalised network autoregressive (GNAR) models, using…

Methodology · Statistics 2021-07-19 Guy P Nason , James L Wei

Understanding the structure of communities in a network has a great importance in the economic analysis. Communities are indeed characterized by specific properties, that are different from those of both the individual node and the whole…

Physics and Society · Physics 2021-10-20 Paolo Bartesaghi , Stefano Benati , Gian Paolo Clemente , Rosanna Grassi

We test a dynamic ODE model of hierarchical asymmetry on a panel of 260 countries over 1960-2023, drawing on World Bank, Penn World Table, V-Dem and World Inequality Database sources. In cross-section the model holds partially: trade…

Physics and Society · Physics 2026-05-20 Kristian Sestak

This paper studies the topological properties of the World Trade Web (WTW) and its evolution over time by employing a weighted network analysis. We show that the WTW, viewed as a weighted network, displays statistical features that are very…

General Finance · Quantitative Finance 2009-11-13 Giorgio Fagiolo , Javier Reyes , Stefano Schiavo

The GDP growth of national economies is modelled by the logistic function. Applying it on the GDP data of the World Bank till the year 2020, we forecast the outcome of the competitive GDP growth of Japan, Germany, UK and India, all of whose…

Physics and Society · Physics 2022-11-08 Arnab K. Ray