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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/92453

    Title: Fuzzy portfolio model with fuzzy-input return rates and fuzzy-output proportions
    Authors: Tsaur, Ruey-Chyn
    Contributors: 淡江大學管理科學學系
    Keywords: fuzzy portfolio model;incomplete information;fuzzy proportion;fuzzy mean–variance model
    Date: 2015-01-30
    Issue Date: 2013-10-14 11:50:08 (UTC+8)
    Abstract: In the finance market, a short-term investment strategy is usually applied in portfolio selection in order to reduce investment risk; however, the economy is uncertain and the investment period is short. Further, an investor has incomplete information for selecting a portfolio with crisp proportions for each chosen security. In this paper we present a new method of constructing fuzzy portfolio model for the parameters of fuzzy-input return rates and fuzzy-output proportions, based on possibilistic mean–standard deviation models. Furthermore, we consider both excess or shortage of investment in different economic periods by using fuzzy constraint for the sum of the fuzzy proportions, and we also refer to risks of securities investment and vagueness of incomplete information during the period of depression economics for the portfolio selection. Finally, we present a numerical example of a portfolio selection problem to illustrate the proposed model and a sensitivity analysis is realised based on the results.
    Relation: International Journal of Systems Science 46(3), pp.438-450
    DOI: 10.1080/00207721.2013.784820
    Appears in Collections:[Department of Management Sciences] Journal Article

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