Showing 1 - 10 of 97
This report summarizes a series of projects undertaken by staff and students in the Department of Rural Economy which examine various socio-economic aspects of chronic wasting disease and its effect on a range of stakeholders in Alberta. The four projects included exploring impacts on the cervid...
Persistent link: https://www.econbiz.de/10008800984
This paper deals with the problem of estimating the parameters of mixed Brownian–fractional Brownian motions with the combination of maximum likelihood approach and Powell's method. The maximum likelihood estimators are obtained based on the approximation by random walks of the driving noise....
Persistent link: https://www.econbiz.de/10010781984
Stochastic di®erential equations (SDEs) are central to much of modern finance theory and have been widely used to model the behaviour of key variables such as the instantaneous short-term interest rate, asset prices, asset returns and their volatility. The explanatory and/or predictive...
Persistent link: https://www.econbiz.de/10009437988
Maximum-likelihood estimates of the parameters of stochastic differential equations are consistent and asymptotically efficient, but unfortunately difficult to obtain if a closed-form expression for the transitional probability density function of the process is not available. As a result, a...
Persistent link: https://www.econbiz.de/10009483276
We provide a theoretical framework to explain the empirical finding that the estimated betas are sensitive to the sampling interval even when using continuously compounded returns. We suppose that stock prices have both permanent and transitory components. The permanent component is a standard...
Persistent link: https://www.econbiz.de/10005545749
Persistent link: https://www.econbiz.de/10005371271
An empirical assessment of a continuous time portfolio selection model is studied for the UK economy between 1970 and 1996. The estimates obtained from this study are both statistically significant and consistent with the model's predictions. The estimate of risk aversion parameter refers to low...
Persistent link: https://www.econbiz.de/10005382235
Simple sufficient conditions for the existence of a unique equivalent martingale measure are provided. Furthermore, these conditions give us a handle on situations where an equivalent martingale measure cannot exist. The existence of a unique equivalent martingale measure is of relevance to...
Persistent link: https://www.econbiz.de/10005390738
We consider an investor who has available a bank account (risk free asset) and a stock (risky asset). It is assumed that the interest rate for the risk free asset is zero and the stock price is modeled by a diffusion process. The wealth can be transferred between the two assets under a...
Persistent link: https://www.econbiz.de/10004971772
We study the continuous-time limit of a class of Markov chains coming from the evolution of classical open systems undergoing repeated interactions. This repeated interaction model has been initially developed for dissipative quantum systems in Attal and Pautrat (2006) and was recently set up...
Persistent link: https://www.econbiz.de/10011077906