Sökning: "student´s t distribution"

Visar resultat 1 - 5 av 30 uppsatser innehållade orden student´s t distribution.

  1. 1. Volatility Forecasting - A comparative study of different forecasting models.

    Kandidat-uppsats,

    Författare :Emil Sturesson; Anton Wennström; [2023-06-29]
    Nyckelord :Volatility; GARCH; EGARCH; t-GAS; HAR-RV; Realized GARCH; Volatility Forecasting; Volatility Modelling;

    Sammanfattning : This study evaluates the out-of-sample forecasting performance of different volatility mod- els. When applied to XACT OMXS30, we use GARCH(1,1), EGARCH(1,1), and t- GAS(1,1) to forecast squared daily returns while Realized GARCH(1,1) and HAR-RV are used to forecast Realized Variance. LÄS MER

  3. 2. Forecasting Value-at-Risk and Expected Shortfall: A comparison of non- and parametric methods for crude oil amidst extreme volatility

    Magister-uppsats, Lunds universitet/Nationalekonomiska institutionen

    Författare :Otto Colbin; Yugam Sharma; [2023]
    Nyckelord :Value-at-Risk VaR ; Expected Shortfall ES ; Nonparametric estimation methods; Parametric estimation methods; Crude oil.; Business and Economics;

    Sammanfattning : Practitioners primarily utilise nonparametric methods when estimating Value-at- Risk (VaR) and Expected Shortfall (ES) for computing capital requirements. However, various researchers assert that there are issues with those estimates, particularly amidst periods of market turmoil. LÄS MER

  4. 3. DCC-GARCH Estimation

    Master-uppsats, KTH/Matematik (Avd.)

    Författare :Christofer Nordström; [2021]
    Nyckelord :Multivariate GARCH; DCC-GARCH; Conditional Correlation; Forecasting; Flerdimensionella GARCH-modeller; DCC-GARCH; Betingad Korrelation; Prognoser;

    Sammanfattning : When modelling more that one asset, it is desirable to apply multivariate modeling to capture the co-movements of the underlying assets. The GARCH models has been proven to be successful when it comes to volatility forecast- ing. LÄS MER

  5. 4. An Empirical Study: Expected Shortfall Estimation Methods for a Bank's Trading Book

    Magister-uppsats, Lunds universitet/Nationalekonomiska institutionen

    Författare :Laura Emina Ludolphy; Emilia Johansson; [2020]
    Nyckelord :Expected Shortfall; Trading Book; Student’s t-distribution; GARCH 1; 1 ; Volatility Weighted Historical Simulation; Business and Economics;

    Sammanfattning : This thesis investigates methods that estimate the Expected Shortfall correctly by passing the Acerbi-Szekely (2014) backtest in both stressed and calm periods. This backtest is added to in this thesis to test against both under- and overestimation of ES. LÄS MER

  7. 5. Geometry dependency of cerebral arterial pressure, and estimation of wall shear stress in patients with carotid stenosis: a CFD approach

    Master-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Josef Odevik; [2020]
    Nyckelord :Carotid stenosis; Geometry dependency; Arterial pressure; Atherosclerosis; Wall shear stress; Computational fluid dynamics; Karotid stenos; Geometriberoende; Artärtryck; Åderförkalkning; Skjuvkraft; Numeriska flödesberäkningar;

    Sammanfattning : This thesis have investigated how the cerebral arterial pressure can be estimated using computational fluid dynamics (CFD). Specifically, a sensitivity study of how the blood vessel diameter affects the arterial pressure in patients with carotid stenosis, has been conducted. LÄS MER