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  • 學位論文

模糊投資組合模型的評估與比較

Fuzzy Portfolio Selection Models – A Comparative Study

指導教授 : 余菁蓉
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摘要


本研究整理了有關不確定性組合之相關文獻,並將文獻所使用的模糊方法分為三類,即模糊決策理論、可能性規劃法、區間規劃法,接著說明解釋各文獻所發展之模型,再從三類模糊方法中各挑選一種模型與傳統的均異模型做比較,並以移動視窗法進行25期的模擬交易測試。實驗結果發現,模糊決策理論建構的模型表現最差,可能性規劃法所建構的悲觀模型則建議在大盤表現不好時採取,區間規劃法所建構的模型不論是在大盤表現好或壞時,樂觀與悲觀模型的表現皆不差。

並列摘要


This study surveys and evaluates related studies in fuzzy portfolio selection. We classify these studies into three categories with the fuzzy approach they employed. These three categories involve fuzzy decision theory, possibilistic programming and interval programming. This study explains the models of these studies, and chooses one model respectively from the three categories to compare with the traditional Markowitz’s mean-variance model. By illustrating selected model with rolling window method, we found the models based on the fuzzy decision theory have worst performance. Besides, the pessimistic models based on possibilistic programming can be selected in bear market, and the pessimistic or optimistic models based on interval programming can be selected in bull market and bear market.

參考文獻


I. 中文文獻
1. 楊敏生,劉曼君 (民85),「可能性理論淺介」,《數學傳播季刊》,第二十卷第三期。
II. 英文文獻
1. R.D. Arnott, and W.H. Wanger, “The measurement and control of trading costs,” Financial Analysts Journal 46 (1990) 73-80.
2. R. Bellman, and L. A. Zadeh, “Decision making in a fuzzy environment,” Management Science, 17 (1970) 141-164.

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