5. ANALYSIS OF STRATEGIES USED
5.1 Analysis by Non-soft Computing
In generally, conventional economic forecasting methods base on statistical techniques such as regression, maximum likelihood functions [18].
In 1996, Tantinakom investigated economic factors influencing in the Thai stock market [11]. His study was based on daily data from July 4, 1994 to June 28, 1996. The economic factors used were based on both fundamental factors and technical factors included trading value, trading volume, interbank overnight rate, inflation, net trading value of investment, value of the Thai Baht, price earning ratio, the Dow Jones Index, the Hang Seng Index, the Nikkei Index, Straits Times Industrial Index, and Kuala Lumpur Stock Exchange Composite Index. By using a multiple regression method, the study showed that the statistically significant influences on the SET were the price earning ratio, the Straits Time index and the net trading value of foreign investment. These factors moved in a similar direction to the SET Index [11]. In addition, the value of the Thai Baht was statistically significant in its influence on the SET index, but moved in the opposite direction [11].
By using the Ordinary Least Squares for the regression specification, Khumyoo (2000) also analyzed factors impacting on the prices of stocks trading in the SET [12]. This study was based on monthly data in two periods: from January 1994 to December 1995 and from January 1996 to December 1999. The author found that the statistically significant factors on stock prices in the first period were the Dow Jones 30 Industrial Index, Hang Seng Index, Nikkei 255 Index, Straits Times Industrial Index, Taiwan Weighted Index, the gold price, the exchange rate between the Japanese Yen and the Thai Baht, the Minimum Loan Rate (MLR), and the oil price. In the second period, the Dow Jones 30 Industrial Index, Hang Seng Index, Nikkei 255 Index, gold price, the exchange rate between the US Dollar and the Thai Baht, the Minimum Loan Rate (MLR), money supply, and inter bank overnight rate were statistically significant on prices of stocks trading on the SET [12]. To investigate the relationships between the SET Index and the United States stock indices including the Nasdaq Index, Dow Jones Index, and the S&P500 Index, Chaereonkithuttakorn (2005) applied the co-integration method and the Grange causality analysis on daily data during the period from January 2, 2003 to February 28, 2005 [13]. This study showed the three United States