Showing 1 - 6 of 6
Porter's 2001 'strategy and the Internet' paper is a key article in the field of on-line strategy. This paper assesses Porter's views in the light of current and past developments. Porter's paper, whilst still thought provoking in many ways, now shows some weaknesses, and in places is no longer...
Persistent link: https://www.econbiz.de/10009476500
This dissertation includes three essays on hedging the interest rate and credit risks of Mortgage-Backed Securities (MBS).Essay one addresses the problem of how to efficiently estimate interest rate sensitivity parameters of MBS. To do this in Monte Carlo simulation, we derive perturbation...
Persistent link: https://www.econbiz.de/10009450787
Since its introduction by Owen in [29, 30], the empirical likelihood method has been extensively investigated and widely used to construct confidence regions and to test hypotheses in the literature. For a large class of statistics that can be obtained via solving estimating equations, the...
Persistent link: https://www.econbiz.de/10015228738
Markov processes are used in a wide range of disciplines, including finance. The transition densities of these processes are often unknown. However, the conditional characteristic functions are more likely to be available, especially for Lévy-driven processes. We propose an empirical likelihood...
Persistent link: https://www.econbiz.de/10015236724
Motivated by prediction problems for time series with heavy-tailed marginal distributions, we consider methods based on `local least absolute deviations' for estimating a regression median from dependent data. Unlike more conventional `local median' methods, which are in effect based on locally...
Persistent link: https://www.econbiz.de/10009439518
We consider local least absolute deviation (LLAD) estimation for trend functions of time series with heavy tails which are characterised via a symmetric stable law distribution. The setting includes both causal stable ARMA model and fractional stable ARIMA model as special cases. The asymptotic...
Persistent link: https://www.econbiz.de/10009440424