ABSTRACT
On July 21, 2005, the People's Bank of China officially declared the system of exchange rate which referred a basket of currencies with managed floating and based on market supply and demand. Since the implementation of the new exchange rate ...
ABSTRACT
On July 21, 2005, the People's Bank of China officially declared the system of exchange rate which referred a basket of currencies with managed floating and based on market supply and demand. Since the implementation of the new exchange rate regime, RMB emerged the continually trend of appreciation. On October 15, 2007, after the Shanghai composite index has just broke 6000, stock market faced adjustment by a large margin. On the middle of November 2007, the Shanghai securities composite index decreased by 17% in just a month. On October 28, 2008, the index dropped to the lowest point in this round of bear market by 1664.93. The decline of 72.83% shook the global capital markets. The current situation faced by China is very similar to the situation of Japan's economic crisis in 1980s.
In this context, by studying the reform of China's exchange rate and the reform of the shareholder structure (the internal mechanism and the development track of impact of RMB exchange rate changes on the China's securities market), it is related to the interests of investors, and it also has very important role to avoid repeat the mistake and to promote the China's financial markets into long-term healthy and stable development.
Therefore, in this paper, making empirical analysis with using the latest data and scientific research methods (econometric method---vector auto regression model (VAR) and machine learning method---support vector machine (SVM)) based on China's current economic background and the previous research. To find whether there is a long-term stable relationship or causal relationship between exchange rate changes and stock price index based on the large amounts of data. The conclusions are as follows: (1) Both in long-term and short term, changes in RMB exchange rate will have an impact on China's stock price index; (2) Long-term influence coefficient is positive, and short-term influence coefficient is negative; (3) According to the results of granger causality test, the exchange rate is the granger cause of index and the index is not the granger cause of exchange rate, under the confidence level of 10%. Finally, this paper will put forward some corresponding policy suggestions.
The innovation of the paper is: try to use support vector machine (SVM) method to solve the problem in this thesis, which is a forceful tool to solve machine learning by optimization method, and it has been successfully applied to many fields of data mining. It shows a new possibility to solve the problem of economics.
Keywords:the RMB exchange rate,the stock price,vector auto regression model (VAR), support vector machine (SVM)