This paper mainly studies the return volatility of supermarket by using EGARCH-M, a model that is applied widely in stock markets. The result indicates that the commodities' returns of the supermarket have the leverage effect, i.e. the impact of bad news on volatility is more than that of good news. This conclusion is consistent with stock market
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Machine Learning and Cybernetics, 2006 International Conference on
Date of Conference: 13-16 Aug. 2006