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Wyszukujesz frazę "Dempster–Shafer theory" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Dempster–Shafer Theory for Risk Assessment in Project Management
Autorzy:
Łabędzka, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/22180856.pdf
Data publikacji:
2022-12-30
Wydawca:
Politechnika Częstochowska
Tematy:
Dempster–Shafer theory
project management
risk assessment
uncertainty
Opis:
Project management (PM) involves decision-making processes related to reaching project goals, resources allocation, timelines, intended outputs, outcomes, long-term impacts, etc. Decisions create challenges for those involved in leading and managing projects, such as information overload, time constraints, uncertainty, and biases. Decision-making in PM is especially supported by risk analysis focused on the identification and assessment of factors that could affect (positively or negatively) a successful project delivery. Uncertainty in estimating project risks is considered one of the major challenges in Management Science. The paper draws attention to the root cause of uncertainty in human reasoning in relation to decision-making processes with particular emphasis on risk analysis. A literature review revealed that the area of risk assessment in PM has been dominated by qualitative methods that do not take uncertainty into account. Therefore, the main objective of this paper was to apply the Dempster–Shafer theory (DST), which provides a framework for representing uncertainties by allowing beliefs to not be assigned to a specific subset. Accordingly, the applied research design was employed in this study. The re-search sample included 60 experts that assessed project risks. In order to determine the belief (Bel) and plausibility (Pl) functions, all the evidence was combined using Dempster’s rule of combination, in order to arrive at quantified beliefs. The final results of the study showed that this evidence-based framework for project risk assessment is applicable and easy to use, even for a large number of experts and could support PM practitioners in risk management and decision-making.
Źródło:
Zeszyty Naukowe Politechniki Częstochowskiej. Zarządzanie; 2022, 48; 100-112
2083-1560
Pojawia się w:
Zeszyty Naukowe Politechniki Częstochowskiej. Zarządzanie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fundamentals of the Dempster-Shafer theory and its applications to system safety and reliability modelling
Autorzy:
Rakowsky, U. K.
Powiązania:
https://bibliotekanauki.pl/articles/2069603.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
Dempster-Shafer theory
evidence
uncertainty
expert assessment
event tree analysis
fault tree analysis
Opis:
The Dempster-Shafter Theory is well-known for its usefulness to express uncertain judgments of experts. This contribution shows how to apply the calculus to safety and reliability modelling, especially to expert judgement; Failure Modes, Effects, and Criticality Analysis; Event Tree Analysis, Fault Tree Analysis, and Reliability Centred Maintenance. Including a tutorial introduction to the Dempster-Shafer Theory, the differences between the Probability and the Dempster-Shafer Theory are discussed widely.
Źródło:
Journal of Polish Safety and Reliability Association; 2007, 2; 283--295
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Uncertainty and imprecision in medical diagnosis support
Autorzy:
Straszecka, E.
Powiązania:
https://bibliotekanauki.pl/articles/333413.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
wsparcie diagnostyki medycznej
niepewność
niedokładność
teoria zbiorów rozmytych
systemy ekspertowe
medical diagnosis support
uncertainty
imprecision
Dempster-Shafer theory
fuzzy set theory
expert systems
Opis:
The paper concerns methods of representation of uncertainty and imprecision in successful medical support applications. Advantages of the methods are pointed out and some of their drawbacks are explained. A method of simultaneous representation of imprecision of symptoms and uncertainty of diagnostic rules is proposed. The method suggests an extension of the Dempster-Sahfer theory for fuzzy focal elements. An example of the method is given and their links as well differences from previous approaches are discussed. Conclusions about uncertainty and imprecision representation in medical diagnosis support are provided.
Źródło:
Journal of Medical Informatics & Technologies; 2012, 19; 11-22
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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