Research Article | OPEN ACCESS
Research on Correlation and Network Topologies in Asia-pacific Food-Price Stock Markets Network
1Wei Zhang, 2Yan Chun Zhu and 3Li Hua Wu
1School of Information, Central University of Finance and Economics, Beijing 100081
2School of Economics and Business Administration, Beijing Normal University, Beijing 100875
3School of Information Management, Beijing Information Science and Technology University, Beijing 100192, China
Advance Journal of Food Science and Technology 2016 1:71-76
Received: July 26, 2015 | Accepted: August 20, 2015 | Published: May 05, 2016
Abstract
Aiming at examining the effects of the 2008 global financial crisis on network structure evolution of Asia-pacific food-price stock markets during 2008-2009, 2011-2012, the complex network is established to measure correlations in fluctation among food-price stock indice returen series of 19 Asia-pacific countries. The network topologiy properties are studied and the empirical results show that Asia-pacific food-price stock markets are a small-world, without scale-free characteristics. Hong Kong, South Korea, Singapore act as central nodes. The advent of the financial crisis can make the food-price stock network structure more compact, enhance the corelations. In the stable period, the network volatility reduces and the network hierarchy is more compact. The influence of China food-price stock markets become more powerful, but its stability has declined.
Keywords:
Complex network, community structure, food-price stock market, scale free,
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