Berücksichtigung von Schätzunsicherheit bei der Kreditrisikobewertung Vergleich des Value at Risk der Verlustverteilung des Kreditrisikos bei Verwendung von Bootstrapping und einem asymptotischen Ansatz
Credit risk assessment requires both probability of default and correlation to be estimated. However, such estimation is subject to uncertainty. In order to assess the uncertainty affecting the simultaneous estimation of both parameters, the discussion in literature focuses on the use of asymptotic confidence regions. However, such regions need a very long credit history to allow such assessment to be exact. Bootstrapping represents an alternative method where the data history is short. But this method gives rise to noticeably more intense calculation work. The present article examines the minimum number of periods that must be available in order that bootstrapping and a Wald confidence region permit a comparable assessment of the credit risk. The methods applied here generate similar results where more than 100 historical periods are available.
To our knowledge, this item is not available for
download. To find whether it is available, there are three
1. Check below under "Related research" whether another version of this item is available online.
2. Check on the provider's web page whether it is in fact available.
3. Perform a search for a similarly titled item that would be available.
References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Hamerle, Alfred & Knapp, Michael & Liebig, Thilo & Wildenauer, Nicole, 2005. "Incorporating prediction and estimation risk in point-in-time credit portfolio models," Discussion Paper Series 2: Banking and Financial Studies 2005,13, Deutsche Bundesbank, Research Centre.
- Jochen Lawrenz, 2008. "Assessing the Estimation Uncertainty of Default Probabilities," Credit and Capital Markets, Credit and Capital Markets, vol. 41(2), pages 217-238.
- Christensen, Jens H.E. & Hansen, Ernst & Lando, David, 2004. "Confidence sets for continuous-time rating transition probabilities," Journal of Banking & Finance, Elsevier, vol. 28(11), pages 2575-2602, November.
When requesting a correction, please mention this item's handle: RePEc:kuk:journl:v:43:y:2010:i:4:p:559-585. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Credit and Capital Markets)
If references are entirely missing, you can add them using this form.