17 research outputs found
D-Optimal Designs for Trigonometric Regression Models on a Partial Circle
In the common trigonometric regression model we investigate the D-optimal design problem, where the design space is a partial circle. It is demonstrated that the structure of the optimal design depends only on the length of the design space and that the support points (and weights) are analytic functions of this parameter. By means of a Taylor expansion we provide a recursive algorithm such that the D- optimal designs for Fourier regression models on a partial circle can be determined in all cases. In the linear and quadratic case the D-optimal design can be determined explicitly. AMS Subject Classication: 62K05 Keywords and Phrases: trigonometric regression, D-optimality, implicit function theorem. 1
Optimal design approach to GMM estimation of parameters based on empirical transforms
Parameter estimation based on the generalized method of moments (GMM) is proposed. The proposed method employs a distance between an empirical and the corresponding theoretical transform. Estimation by the empirical characteristic function (CF) is a typical example, but alternative empirical transforms are also employed, such as the empirical Laplace transform when dealing with non-negative random variables. D-optimal designs are discussed, whereby the arguments of the empirical transform are chosen by maximizing the determinant of the asymptotic Fisher information matrix for the resulting estimators. The methods are applied to some parametric models for which classical inference is complicated. © 2008 The Authors
Optimal design of experiments with simulation models of nearly saturated queues
The paper develops an approach to the optimal design of experiments with simulation models of nearly saturated queues, suggested in Cheng and Kleijnen (Oper. Res. v.47, 1999). This approach is based on the introduction of a regression model of the input-output behaviour of the underlying simulation model. In this way the problem is reduced to a special regression experimental design problem. An analytical solution is found under assumptions for the regression function and the behaviour of the output variance. In paricular D-optimal designs are considered and the solution given for this case
A functional-algebraic determination of D-optimal designs for trigonometric regression models on a partial circle
We investigate the D-optimal design problem in the common trigonometric regression model, where the design space is a partial circle. The task of maximizing the criterion function is transformed into the problem of determining an eigenvalue of a certain matrix via a differential equation approach. Since this eigenvalue is an analytic function of the length of the design space, we can make use of a Taylor expansion to provide a recursive algorithm for its calculation. Finally, this enables us to determine Taylor expansions for the support points of the D-optimal design
Optimal designs for estimating individual coefficients in Fourier regression models
SIGLEAvailable from TIB Hannover: RR 8460(2001,5) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman
E-optimal designs in Fourier regression models on a partial circle
SIGLEAvailable from TIB Hannover: RR 8460(2001,35) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman