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Problem naruszania zasad teorii oczekiwanej użyteczności na przykładzie paradoksu Allais

100%
Gluzicka A.
Studia Ekonomiczne
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2013
|
vol. 135
51-63
EN
Theorems about the rational decision making play very important role in the decision theory. According to these theorems people make their decisions by using the rule about maximum benefits. However in the literature we can find conclusions from research and experiments which indicate that when people are making decisions, they are very often breaking that rule about maximum profits. According to that research a few paradoxes of rationality were formulated. In this article experiments concerning the Allais paradoxes are analyzed. The incompatibility between paradox and the expected utility theory were discussed. Also the certainty effect and the common consequence effect were analyzed.
2
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Ranking of optimal stock portfolios determined on the basis of expected utility maximization criterion

88%
Giemza D.
Journal of Economics and Management
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2021
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vol. 43
157-178
EN
Aim/purpose – The aim of the paper is to rank the optimal portfolios of shares of companies listed on the Warsaw Stock Exchange, taking into account the investor’s propensity to risk. Design/methodology/approach – Investment portfolios consisting of varied number of companies selected from WIG 20 index were built. Next, the weights of equity holdings of these companies in the entire portfolio were determined, maximizing portfolio’s expected (square) utility function, and then the obtained structures were compared between investors with various levels of risk propensity. Using Hellwig’s taxonomic development measure, a ranking of optimum stock portfolios depending on the investor’s risk propensity was prepared. The research analyzed quotations from 248 trading sessions. Findings – The findings indicated that whilst there are differences in the weight structures of equity holdings in the entire portfolio between the investor characterized by aversion to risk at the level of γ = 10 and the investor characterized by aversion to risk at the level of γ = 100, the rankings of the constructed optimum portfolios demonstrate strong similarity. The study validated, in conformity with the literature, that with the increase in the number of equity holdings in the portfolio, the portfolio risk initially decreases and then becomes stable at a certain level. Research implications/limitations – The study used data from the past as for which there is no guarantee that they will be adequate for the future. There is sensitivity to the selection of the period from which the historic data come. When changing the period of the analyzed historic data by a small time unit it may prove that the portfolio composition will become totally different. Originality/value/contribution – The paper compares the composition of optimum stock portfolios depending on the investor’s propensity to risk. Their ranking was created using the taxonomic method for this purpose. Taking advantage of this method also additional variables can be taken into account, which describe and differentiate the portfolio and they can be assigned relevant significance depending on the investor’s preferences.
3
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Wykorzystanie idei automatycznego generowania powierzchni indyferencji do budowy systemu oceny ofert negocjacyjnych w systemie wspomagania negocjacji NegoManage

75%
Brzostowski J., Wachowicz T.
Studia Ekonomiczne
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2013
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vol. 138
31-50
EN
In this paper we discuss the mechanism for building the negotiation offers' scoring system by means of the automatically generated indifference surfaces. We introduce the classic approach based on trade-off analysis first , that derives from multiple attribute value theory and present its application for the simplest case of two- and three-criteria decision problem. Then we analyze its generalization for the cases with more than three decision criteria, which involves also the interaction with decision maker. Finally we present the models software implementation that is applied in the negotiation support system called NegoManage.
4
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Modele ekonomiczne w analizie zjawiska przestępczości

63%
Kądziołka K.
Studia Ekonomiczne
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2014
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vol. 206
46-60
PL
W artykule przedstawione zostały założenia ekonomicznej teorii przestępczości G. Beckera, zgodnie z którą mechanizm podejmowania decyzji o popełnieniu czynów niezgodnych z prawem jest oparty na racjonalnej kalkulacji korzyści i kosztów płynących z podjęcia takich działań. Przedstawiono formalny model procesu decyzyjnego potencjalnych sprawców przestępstw oparty na teorii oczekiwanej użyteczności i badano wpływ wybranych czynników na rozmiar przestępczości stwierdzonej w Polsce w kontekście założeń ekonomicznej teorii przestępczości. Zwrócono również uwagę na problem racjonalności potencjalnych sprawców przestępstw, brak dostępu do pełnej informacji oraz sposób oceny korzyści i kosztów z podejmowanych działań przestępczych. Zaprezentowano ponadto zastosowanie modeli ekonomii behawioralnej w analizie zjawiska przestępczości i pewne płynące z nich wnioski.
EN
Article presents formal models of decision making problem based on expected utility theory and prospect theory. Models are applied to the criminal decision making problem. Article also introduces to econometric modeling of crime rate in Poland. There is empirically verified relationship between socio-economic factors and property crime rate in the regions of Poland using panel data.
5
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O istocie wartości bieżącej

63%
Piasecki K.
Studia Ekonomiczne
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2013
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vol. 154
82-91
EN
Theoretical basis for discussion is the natural nonlinear preorder defined on the set of financial flows. Then there exists a utility function consistent with this preorder. Two financial flows are equivalent iff their utilities are equal. Then we can show that the present value of financial flow is equal to its utility. Lack of capital synergy is not a necessary condition for this thesis.
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