Hernán Pedro Vigier

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This paper is a first approach to the study of beta coefficients using fuzzy regression. We intend to improve the calculation of the sector and subsector betas of the Spanish Stock Market using fuzzy regression in an attempt to incorporate all future inaccuracies and the subjectivity associated with decision making. Our objective is to use all the(More)
The paper aims to develop an adjustment index based on OWA operators to enrich the results of diagnostic fuzzy models of business failure. A proposal to verify the diseases prediction accuracy of the models is also added. This allows a reduction of the map of causes or diseases detected in strategic defined areas. At the same time, these key areas can be(More)
Corporate finance, and capital structure theory in particular, study the firm’s decisions from a normative point a view: shareholder value maximization. However, Brealey and Myers (2006) point out that “how financial decisions are made” is a question that still remains unanswered. In this paper we propose a descriptive approach to the understanding of how(More)
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