Netconomics: Novel Forecasting Techniques from the Combination of Big Data, Network Science and Economics
The combination of the network theoretic approach with recently available abundant economic data leads to the development of novel analytic and computational tools for modelling and forecasting key economic indicators. The main idea is to introduce a topological component into the analysis, taking into account consistently all higher-order interactions. We present three basic methodologies to demonstrate different approaches to harness the resulting network gain. First, a multiple linear regression optimisation algorithm is used to generate a relational network between individual components of national balance of payment accounts. This model describes annual statistics with a high accuracy and delivers good forecasts for the majority of indicators. Second, an early-warning mechanism for global financial crises is presented, which combines network measures with standard economic indicators. From the analysis of the cross-border portfolio investment network of long-term debt securities, the proliferation of a wide range of over-the-counter-traded financial derivative products, such as credit default swaps, can be described in terms of gross-market values and notional outstanding amounts, which are associated with increased levels of market interdependence and systemic risk. Third, considering the flow-network of goods traded between G-20 economies, network statistics provide better proxies for key economic measures than conventional indicators. For example, it is shown that a country's gate-keeping potential, as a measure for local power, projects its annual change of GDP generally far better than the volume of its imports or exports.
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- René M. Stulz, 2009.
"Credit Default Swaps and the Credit Crisis,"
NBER Working Papers
15384, National Bureau of Economic Research, Inc.
- James Crotty, 2008.
"Structural Causes of the Global Financial Crisis: A Critical Assessment of the ‘New Financial Architecture’,"
UMASS Amherst Economics Working Papers
2008-14, University of Massachusetts Amherst, Department of Economics.
- James Crotty, 2009. "Structural causes of the global financial crisis: a critical assessment of the 'new financial architecture'," Cambridge Journal of Economics, Oxford University Press, vol. 33(4), pages 563-580, July.
- James Crotty, 2008. "Structural Causes of the Global Financial Crisis: A Critical Assessment of the ‘New Financial Architecture’," Working Papers wp180, Political Economy Research Institute, University of Massachusetts at Amherst.
- Andreas Joseph & Stephan Joseph & Guanrong Chen, 2013. "Cross-border Portfolio Investment Networks and Indicators for Financial Crises," Papers 1306.0215, arXiv.org, revised Jan 2014.
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