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In the study of finance, likelihood based or moment based methods are frequently used to estimate parameters for various kinds of models given the sampled return data. While the former method is not robust, the latter one suffers from loss of efficiency and high noise-to-signal ratio in the...
Persistent link: https://www.econbiz.de/10009450777
This thesis focuses on two statistical problems related to credit scoring. In credit scoring of individuals, two classes are distinguished, namely low and high risk individuals (the so-called "good" and "bad" risk classes). Firstly, we suggest a measure which may be used to study the nature of a...
Persistent link: https://www.econbiz.de/10009455950
The lognormal distribution is useful in modeling continuous random variables which are greater than or equal to zero. Example scenarios in which the lognormal distribution is used include, among many others: in medicine, latent periods of infectious diseases; in environmental science, the...
Persistent link: https://www.econbiz.de/10009457140
The beta distribution is useful in modeling continuous random variables that lie between 0 and 1, such as proportions and percentages. The beta distribution takes on many different shapes and may be described by two shape parameters, alpha and beta, that can be difficult to estimate. Maximum...
Persistent link: https://www.econbiz.de/10009457237
This dissertation consists of three essays on modeling and parameter estimation for covariance non-stationary processes. The first essay considers the non-linear deformation of time scale for G(lambda)-stationary processes developed by Jiang, Gray and Woodward [2006]. After the appropriate...
Persistent link: https://www.econbiz.de/10009431199
coefficients of coskewness and cokurtosis have the correct sign as predicted by the higher-moment CAPM theory but only cokurtosis … size and book-to-market ratio in Chapter 3. This is a cross-sectional test of the conditional CAPM. The models examined …-factor asset pricing models. Models tested are the CAPM, the Fama-French three-factor model and a four-factor model including the …
Persistent link: https://www.econbiz.de/10009440933
kernel that depends on returns, as in the CAPM or the APT, can accurately price assets. In this sense, theory based on …Recent developments in intertemporal asset pricing theory focus on two sets of fundamental determinants of asset …, most empirical applications, as well as the best practice in the financial industry, ignore much of what theory has to say …
Persistent link: https://www.econbiz.de/10009441191
model derived from Rosen’s hedonic price theory. Two different stock market models are developed to estimate the model, a … basic firm’s stock market model and a modified Capital Assets Pricing Model (CAPM). The explanatory variables include risk …
Persistent link: https://www.econbiz.de/10009443722
The traditional literature on the CAPM assumes that investor's tax payments simply vanish from the model. This … assumption is not at all consistent with the actual behavior of the Treasury. The theory of general equilibrium states that an … interest rate rf = 0 will not affect prices if taxes are introduced. We show that this result can be extended to the CAPM if …
Persistent link: https://www.econbiz.de/10009447474
returns. The finance literature has uncovered several potential failings of the Capital Asset Pricing Model (CAPM). I … investigate the ability of additional risk factors, which are not considered by the CAPM, to explain these problems. In particular … to refine and reassess the cross-sectional evidence against the CAPM.In the first chapter, I test the cross …
Persistent link: https://www.econbiz.de/10009466087