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Production networks arise from supply and customer relations among firms. These systems are gaining growing attention as a consequence of disruptions due to natural or man-made disasters that happened in the last years, such as the Covid-19…

物理与社会 · 物理学 2024-05-15 Massimiliano Fessina , Andrea Zaccaria , Giulio Cimini , Tiziano Squartini

Few attempts have been proposed in order to describe the statistical features and historical evolution of the export bipartite matrix countries/products. An important standpoint is the introduction of a products network, namely a…

物理与社会 · 物理学 2015-11-10 Fabio Saracco , Riccardo Di Clemente , Andrea Gabrielli , Luciano Pietronero

Globalization has rapidly advanced but exposed countries to supply chain disruptions, highlighted by the COVID-19 pandemic. This study exhaustively analyzes bilateral export data for 186 countries from 2018, 2020, and 2022, using…

应用统计 · 统计学 2024-09-20 Juan Sosa , Andrés Felipe Arévalo-Arévalo , Juan Pablo Torres-Clavijo

The digital exhaust left by flows of physical and digital commodities provides a rich measure of the nature, strength and significance of relationships between countries in the global network. With this work, we examine how these traces and…

计算机与社会 · 计算机科学 2016-09-28 Desislava Hristova , Alex Rutherford , Jose Anson , Miguel Luengo-Oroz , Cecilia Mascolo

We propose an algorithm to capture emergent patterns in the cross-correlations of financial markets, highlighting regime changes on a global scale. In our approach, financial markets are viewed as complex adaptive systems, and multiscale…

综合经济学 · 经济学 2024-09-02 Marina Dolfin , George Kapetanios , Leone Leonida , Jose De Leon Miranda

Using the new data from the OECD-WTO world network of economic activities we construct the Google matrix $G$ of this directed network and perform its detailed analysis. The network contains 58 countries and 37 activity sectors for years…

统计金融 · 定量金融 2015-07-14 V. Kandiah , H. Escaith , D. L. Shepelyansky

With globalization, countries are more connected than before by trading flows, which currently amount to at least 36 trillion dollars. Interestingly, approximately 30-60 percent of global exports consist of intermediate products. Therefore,…

综合金融 · 定量金融 2017-02-08 Peiteng Shi , Jiang Zhang , Bo Yang , Jingfei Luo

Data has become a critical resource for organizations and society. Yet, it is not always as valuable as it could be since there is no well-defined approach to managing and using it. This article explores the increasing importance of global…

计算机与社会 · 计算机科学 2023-02-28 Sara Marcucci , Natalia Gonzalez Alarcon , Stefaan G. Verhulst , Elena Wullhorst

We use the logistic equation to model the dynamics of the GDP and the trade of the six countries with the highest GDP in the world, namely, USA, China, Japan, Germany, UK and India. From the modelling of the economic data, which are made…

物理与社会 · 物理学 2022-09-27 Abhin Kakkad , Arnab K. Ray

Trade is a fundamental pillar of economy and a form of social organization. Its empirical characterization at the worldwide scale is represented by the World Trade Web (WTW), the network built upon the trade relationships between the…

综合金融 · 定量金融 2015-11-09 Pau Erola , Albert Diaz-Guilera , Sergio Gomez , Alex Arenas

Road networks are among the most essential components of a country's infrastructure. By facilitating the movement and exchange of goods, people, and ideas, they support economic and cultural activity both within and across borders.…

机器学习 · 计算机科学 2020-12-02 Benjamin Choi , John Kamalu

We develop the Google matrix analysis of the multiproduct world trade network obtained from the UN COMTRADE database in recent years. The comparison is done between this new approach and the usual Import-Export description of this world…

社会与信息网络 · 计算机科学 2021-10-08 Justin Loye , Katia Jaffrès-Runser , Dima Shepelyansky

The evolution of global income distribution from 1988 to 2018 is analyzed using purchasing power parity exchange rates and well-established statistical distributions. This research proposes the use of two separate distributions to more…

综合经济学 · 经济学 2025-12-16 J. D. A. Islas-García , M. del Castillo-Mussot , Marcelo B. Ribeiro

Support vector machine (SVM) is a well known binary linear classification model in supervised learning. This paper proposes a globalized distributionally robust chance-constrained (GDRC) SVM model based on core sets to address uncertainties…

最优化与控制 · 数学 2025-05-16 Yueyao Li , Chenglong Bao , Wenxun Xing

This study examines the relationship between trade openness, logistics performance, and economic growth within G20 economies. Using a Bootstrap Autoregressive Distributed Lag (ARDL) model augmented by a dynamic error correction mechanism…

综合经济学 · 经济学 2025-12-30 Haibo Wang , Lutfu Sua

The Metaverse offers a second world beyond reality, where boundaries are non-existent, and possibilities are endless through engagement and immersive experiences using the virtual reality (VR) technology. Many disciplines can benefit from…

The large-scale organization of the world economies is exhibiting increasingly levels of local heterogeneity and global interdependency. Understanding the relation between local and global features calls for analytical tools able to uncover…

综合金融 · 定量金融 2008-12-10 M. Angeles Serrano , Marian Boguna , Alessandro Vespignani

Maritime shipping is a backbone of international trade and, thus, the world economy. Cargo-loaded vessels travel from one country's port to another via an underlying port-to-port transport network, contributing to international trade values…

社会与信息网络 · 计算机科学 2020-10-26 Mengqiao Xu , Qian Pan , Haoxiang Xia , Naoki Masuda

The drastic changes in the global economy, geopolitical conditions, and disruptions such as the COVID-19 pandemic have impacted the cost of living and quality of life. It is important to understand the long-term nature of the cost of living…

机器学习 · 计算机科学 2025-02-21 Tanay Panat , Rohitash Chandra

Essential functionality in the ICT (Information and Communication Technology) space draws from standards such as HTTP (IETF RFC 2616, Bluetooth (IEEE 802.15) and various telecommunication standards (4G, 5G). They have fuelled rapid growth…

综合经济学 · 经济学 2022-04-08 Paras Bhatt , Claire Vishik , Govind Hariharan , H. Raghav Rao