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Parameter Estimatio...
Parameter Estimation in Credit Models Under Incomplete Information
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- Herbertsson, Alexander, 1977 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för nationalekonomi med statistik,Department of Economics
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Frey, Rüdiger (author)
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(creator_code:org_t)
- 2014-03-17
- 2014
- English.
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In: Communications in Statistics - Theory and Methods. - : Informa UK Limited. - 0361-0926 .- 1532-415X. ; 43:7, s. 1409-1436
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Abstract
Subject headings
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- We consider the filtering model of Frey and Schmidt (2012) stated under the real probability measure and develop a method for estimating the parameters in this framework by using time-series data of CDS index spreads and classical maximum-likelihood algorithms. The estimation-approach incorporates the Kushner-Stratonovich SDE for the dynamics of the filtering probabilities. The convenient formula for the survival probability is a prerequisite for our estimation algorithm. We apply the developed maximum-likelihood algorithms on market data for historical CDS index spreads (iTraxx Europe Main Series) in order to estimate the parameters in the nonlinear filtering model for an exchangeable credit portfolio. Several such estimations are performed as well as accompanying statistical and numerical computations.
Subject headings
- SAMHÄLLSVETENSKAP -- Ekonomi och näringsliv (hsv//swe)
- SOCIAL SCIENCES -- Economics and Business (hsv//eng)
- NATURVETENSKAP -- Matematik -- Sannolikhetsteori och statistik (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Probability Theory and Statistics (hsv//eng)
- NATURVETENSKAP -- Matematik -- Beräkningsmatematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Computational Mathematics (hsv//eng)
Keyword
- CDS index
- Credit risk
- Filtering
- Maximum-likelihood
Publication and Content Type
- ref (subject category)
- art (subject category)
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