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Wyświetlanie 1-3 z 3
Tytuł:
Forecasting risk of decision – making processes
Autorzy:
Zemke, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/425110.pdf
Data publikacji:
2013
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
risk
risk model
risk measures
risk states
forecasting risk states
Opis:
What is the risk of decision-making processes, what causes it? Most typically, definitions of risk are ex post – they are looking at risk as a difference between expectations of results of actions taken and the actual performance. This is a considerable inconvenience, especially in cases when processes are of a long-term nature. Thus, is it possible to measure risk in the course of the decision-making processes? How can this be done and in what conditions can risk measures be extrapolated? An analysis of the definitions of risk shows that the one which is the most useful for solving the problem undertaken in the present study, is given by K. and T. Jajuga, “…the term of risk will refer to a decision, or, to be more precise, to an action taken as a result. One may therefore speak of taking risky decisions”. The authors make it clear that a risky decision is uncertainty as to “…the possibility for people to control the factors that determine the reality”. This suggestion, if accepted, enables one to construct a risk model as a random vector whose components are control variables of the decisionmaking processes taking place. In consequence, this makes it possible to estimate statistic measures of risk. Risk measures indicating the level of risk at moment t of decision-making processes represent a foundation of the problem announced by the title of the present study. Although they are merely a set of risk estimations, i.e. an assessment of its state, they nevertheless provide an opportunity to forecast risk levels within the period in which the processes occur, thus providing valuable information for decisions-makers.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2013, 1(39); 30-39
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Polish contribution to financial econometrics. A review of methods and applications
Polski wkład w ekonometrię finansową. Przegląd metod i zastosowań
Autorzy:
Osińska, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/425108.pdf
Data publikacji:
2016
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
financial econometrics
volatility models
risk measures
extreme value theory
microstructure
behavioral information
Opis:
Since 1982 the term “financial econometrics” has been present in the enormous literature that covers both methodologies and empirical analyses of the processes observed on the financial markets. The purpose of the presented paper is to indicate the milestones in financial econometrics and their usefulness and to show the contribution of the research from Poland into its development. ‘Pure’ financial econometrics methods are of special interest. The paper is directed at reviewing the recent methodologies and their applications. We focused on the contribution of Polish researchers into financial econometrics over the years, considering both the methodology and the applications. Some of the indicated publications are cited quite often, including international quotations, others are not very popular due to the language of the publication or the local reach of the journal, although many of them can be considered in line with the achievements that are presented in international empirical publications.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2016, 4 (54); 9-35
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Problems of monotonicity of some popular risk measures
Problemy monotoniczności pewnych popularnych miar ryzyka
Autorzy:
Khemissi, Eliza
Powiązania:
https://bibliotekanauki.pl/articles/425285.pdf
Data publikacji:
2016
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
measures of risk
Expected Shortfall
Expected Value
Maximum Loss
coherence
Opis:
In the article the author checked the properties of coherent measures of risk for Expected Value, Expected Shortfall, Maximum Loss (for losses weighted with probability), Median, Median Absolute Deviation, “Arithmetic Mean of Absolute Deviations from Median”, Quantiles, Cumulative Distribution Function and Mid-Range in connection with the last financial crisis. Methodology of the research – mathematical proving and theoretical analysis. Results. The survey shows that the above functions are not coherent measures of risk with some definition of stochastic order and in many cases not measures of risk in terms of the axiomatic definition. The paper shows also that the lemma used in the literature to prove monotonicity of Expected Shortfall is not truth and we will prove the lemma with the opposite relation. Value of the paper – Mathematical proofs in the field of risk measurement. Showing some problems with monotonicity of risk measures. Contradicting the lemma of monotonicity of Expected Shortfall. Own definition of first degree stochastic order.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2016, 2 (52); 108-122
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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