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High volatility, thick tails and extreme value theory in value-at-risk estimation
(Elsevier BV, 2003)
In this paper, the performance of the extreme value theory in value-at-risk calculations is compared to the performances of other well-known modeling techniques, such as GARCH, variance-covariance (Var-Cov) method and ...
Systematic risk and timescales
(Routledge, 2003)
In this paper we propose a new approach to estimating the systematic risk (the beta of an asset) in a capital asset pricing model (CAPM). The proposed method is based on a wavelet multiscaling approach that decomposes a ...
Intraday dynamics of stock market returns and volatility
(Elsevier BV, 2006)
This paper provides new empirical evidence for intraday scaling behavior of stock market returns utilizing a 5 min stock market index (the Dow Jones Industrial Average) from the New York Stock Exchange. It is shown that ...
Overnight borrowing, interest rates and extreme value theory
(Elsevier BV, 2006)
We examine the dynamics of extreme values of overnight borrowing rates in an inter-bank money market before a financial crisis during which overnight borrowing rates rocketed up to (simple annual) 4000 percent. It is shown ...
Multiscale systematic risk
(Pergamon Press, 2005)
In this paper we propose a new approach to estimating systematic risk (the beta of an asset). The proposed method is based on a wavelet multiscaling approach that decomposes a given time series on a scale-by-scale basis. ...
Using genetic algorithms to select architecture of a feedforward artificial neural network
(Elsevier BV, 2001)
This paper proposes a model selection methodology for feedforward network models based on the genetic algorithms and makes a number of distinct but inter-related contributions to the model selection literature for the ...
Effective return, risk aversion and drawdowns
(Elsevier BV, 2001)
We derive two risk-adjusted performance measures for investors with risk averse preferences. Maximizing these measures is equivalent to maximizing the expected utility of an investor. The first measure, Xeff, is derived ...
Differentiating intraday seasonalities through wavelet multi-scaling
(Elsevier BV, 2001)
It is well documented that strong intraday seasonalities may induce distortions in the estimation of volatility models. These seasonalities are also the dominant source for the underlying misspecifications of the various ...
Scaling properties of foreign exchange volatility
(Elsevier BV, 2001)
In this paper, we investigate the scaling properties of foreign exchange volatility. Our methodology is based on a wavelet multi-scaling approach which decomposes the variance of a time series and the covariance between ...
Asymmetry of information flow between volatilities across time scales
(2010)
Conventional time series analysis, focusing exclusively on a time series at a given scale, lacks the ability to explain the nature of the data-generating process. A process equation that successfully explains daily price ...