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    Wyświetlanie 1-3 z 3
    Tytuł:
    On some analogies between one-criterion decision making under uncertainty and multi-criteria decision making under certainty
    Autorzy:
    Gaspars-Wieloch, Helena
    Powiązania:
    https://bibliotekanauki.pl/articles/1837907.pdf
    Data publikacji:
    2021-06-30
    Wydawca:
    Uniwersytet Ekonomiczny w Poznaniu
    Tematy:
    one-criterion and multi-criteria decision making
    certainty
    uncertainty
    scenario planning
    economic problems
    optimization
    payof matrix
    decision rules
    decision maker's preferences
    Opis:
    One-criterion decision making under uncertainty (1-DM/U) is related to situations in which the decision maker (DM) evaluates the alternatives on the basis of one objective, but e.g. due to numerous uncertain future factors some parameters of the problem are not deterministic. Instead of entirely known paramaters, a set of possible scenarios is available. Multi-criteria decision making under certainty (M-DM/C) concerns cases where the DM assesses particular options in terms of many objectives. The parameters are known. Therefore, scenario planning is redundant. Both issues are investigated by many researchers and practitioners, since real economic decision problems are usually at least uncertain or multi-objective. In the paper, numerous analogies between 1-DM/U and M-DM/C are revealed. Some of them have existed for many decades, but others, so far, have not been developed. A careful examination of all the similarities enables an improvement of existing methods and a formulation of new algorithms for 1-DM/U and M-DM/C. The article presents six pairs of similar procedures and contains the description of three novel approaches created by analogy to existing ones.
    Źródło:
    Economics and Business Review; 2021, 7, 2; 17-36
    2392-1641
    Pojawia się w:
    Economics and Business Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spare Parts Quantity Problem Under Uncertainty – the Case of Entirely New Devices With Short Life Cycle
    Autorzy:
    Gaspars-Wieloch, Helena
    Powiązania:
    https://bibliotekanauki.pl/articles/578491.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Ekonomiczny w Katowicach
    Tematy:
    Krótki cykl życia
    Niepewność
    Preferencje decydenta
    Decision maker’s preferences
    Short life cycle
    Uncertainty
    Opis:
    The paper presents a new scenario-based decision rule for the spare parts quantity problem (SPQP) under uncertainty with unknown objective probabilities. The goal of SPQP is to ensure the right number of extra parts at the right place at the right time. In the literature, SPQP is usually regarded as a stochastic problem since the demand for extra parts is treated as a random variable with a known distribution. The optimal stock quantity minimizes the expected loss resulting from buying a given number of parts before potential failures. The novel approach is designed for the purchase of non-repairable spare parts for entirely new seasonal devices, where the estimation of frequencies is complicated because there are no historical data about previous failures. Additionally, the decision maker’s knowledge is limited due to the nature of the problem. The new procedure is a three-criteria method. It is based on the Hurwicz and Bayes decision rules and supported with a forecasting stage enabling one to set the scenario with the greatest subjective chance of occurrence. The method takes into account the decision maker’s attitude towards risk and the asymmetry of losses connected with particular stock quantities. We assume that the future unit purchase cost of a service part bought after the breakdown is also uncertain and given as an interval parameter. The approach is designed for short life cycle machines.
    Źródło:
    Multiple Criteria Decision Making; 2019, 14; 5-28
    2084-1531
    Pojawia się w:
    Multiple Criteria Decision Making
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Critical analysis of classical scenario-based decision rules for pure strategy searching
    Autorzy:
    Gaspars-Wieloch, Helena
    Powiązania:
    https://bibliotekanauki.pl/articles/1858406.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    classical uncertainty one-criterion decision rules
    scenario planning
    pure strategy
    decision maker preferences
    economic case study
    klasyczne jednokryterialne reguły decyzyjne
    planowanie scenariuszowe
    strategia czysta
    preferencje decydenta
    ekonomiczne studium przypadku
    Opis:
    Purpose: The contribution briefly presents the essence and applications of the well-known classical decision rules designed for decision making under uncertainty with unknown probabilities and based on scenario planning. We concentrate on games against nature, pure strategy searching and one-criterion optimization. Design/methodology/approach: The main goal of this work is to analyse numerous case studies and formulate conclusions concerning the properties (in particular drawbacks and limitations) of the aforementioned strategic procedures. Findings: The paper focuses on the limited usefulness of classical decision rules in real economic decision problems. It is advised to apply them very carefully. Research limitations/implications: A similar analysis for mixed strategy searching and multi-criteria optimization should be performed within a future research. Originality/value: The work offers numerous practical guidelines modifying existing procedures and allowing decision makers to obtain logic recommendations.
    Źródło:
    Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2020, 149; 155-165
    1641-3466
    Pojawia się w:
    Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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