# Detecting early signs of the 2007-2008 crisis in the world trade

**Authors:** Fabio Saracco, Riccardo Di Clemente, Andrea Gabrielli, Tiziano Squartini  
**arXiv:** [1508.03533](https://arxiv.org/abs/1508.03533)  
**Date:** 2015-07-31  
**Summary page:** https://www.summarizepaper.com/en/paper/1508.03533v3/

## Key points

- The financial crisis of 2007-2008 had a significant impact on the global economy.
- Several studies have attempted to identify early warning signals for such crises, but most analyses have focused on financial systems and neglected the economic counterpart.
- Authors Fabio Saracco, Riccardo Di Clemente, Andrea Gabrielli, and Tiziano Squartini aim to fill this gap by employing network theory tools to investigate how world trade responded to the financial crisis and economic recession.
- The authors explore the evolution of the bipartite World Trade Web (WTW) from 1995-2010 and monitor its behavior before and after 2007.
- Their analysis reveals that structural changes in WTW topology occurred as early as 2003 when correlations between countries and products began to diminish progressively.
- The WTW's structural modifications were concluded in 2010 after a seemingly stationary phase of three years.
- Volatile macrosectors provide statistically significant early-warning signals, particularly when measured on developing countries.
- This finding suggests that emerging economies are more sensitive than developed ones to global economic cycles.
- Overall, this study highlights the importance of studying not only financial systems but also their economic counterparts when identifying early warning signals for future crises.

## Summary

The financial crisis of 2007-2008 had a significant impact on the global economy, and since then, several studies have attempted to identify early warning signals for such crises. However, most analyses have focused on financial systems, neglecting the economic counterpart. In this paper titled "Detecting early signs of the 2007-2008 crisis in the world trade," authors Fabio Saracco, Riccardo Di Clemente, Andrea Gabrielli, and Tiziano Squartini aim to fill this gap by employing network theory tools to investigate how world trade responded to the financial crisis and economic recession. The authors explore the evolution of the bipartite World Trade Web (WTW) from 1995-2010 and monitor its behavior before and after 2007. Their analysis reveals that structural changes in WTW topology occurred as early as 2003 when correlations between countries and products began to diminish progressively. The WTW's structural modifications were concluded in 2010 after a seemingly stationary phase of three years. The authors also refine their analysis by considering specific subsets of countries and products. They find that volatile macrosectors provide statistically significant early-warning signals, particularly when measured on developing countries. This finding suggests that emerging economies are more sensitive than developed ones to global economic cycles. Overall, this study highlights the importance of studying not only financial systems but also their economic counterparts when identifying early warning signals for future crises. By using network theory tools to analyze world trade data, the authors provide insights into how global economies respond to crises like those experienced in 2007-2008.