Zobrazeno 1 - 10
of 24
pro vyhledávání: '"William J. Studden"'
Publikováno v:
SIAM Journal on Matrix Analysis and Applications. 29:117-142
In this paper we study the connection between matrix measures and random walks with a block tridiagonal transition matrix. We derive sufficient conditions such that the blocks of the n-step block tridiagonal transition matrix of the Markov chain can
Autor:
William J. Studden
Publikováno v:
Journal of Statistical Planning and Inference. 130:85-94
The importance of Elfving's geometrical result is illustrated by showing how his original proof can be used to prove a number of Elfving-type results without the use of equivalence theorems. It is indicated that some of the elementary equivalence the
Autor:
Holger Dette, William J. Studden
Publikováno v:
Linear Algebra and its Applications. 364:33-64
A geometric approach to quadrature formulas for matrix measures is presented using the relations between the representations of the boundary points of the moment space (generated by all matrix measures) and quadrature formulas. Simple proofs of exist
Autor:
Holger Dette, William J. Studden
Publikováno v:
Linear Algebra and its Applications. 345(1-3):169-193
In this paper we study the moment spaces corresponding to matrix measures on compact intervals and on the nonnegative line [0,∞). A representation for nonnegative definite matrix polynomials is obtained, which is used to characterize moment points
Publikováno v:
Journal of Theoretical Probability. 10:349-374
For a birth and death chain on the nonnegative integers with birth and death probabilities pi and qi≡ 1 –pi and reflecting barrier at 0, it is shown that the right tails of the probability of the first return from state 0 to state 0 are simple tr
Autor:
William J. Studden, Holger Dette
Publikováno v:
Stochastic Processes and their Applications. 64(1):17-30
We consider the class of simple random walks or birth and death chains on the nonnegative integers. The set of return probabilities P n 00 , n ⩾ 0, uniquely determines the spectral measure of the process. We characterize the class of simple random
Autor:
Holger Dette, William J. Studden
Publikováno v:
Annals of the Institute of Statistical Mathematics. 46:389-403
For the polynomial regression model on the interval [a, b] the optimal design problem with respect to Elfving's minimax criterion is considered. It is shown that the minimax problem is related to the problem of determining optimal designs for the est
Publikováno v:
Journal of Statistical Planning and Inference. 32:363-384
We consider heteroscedastic linear models in which the variance of a response is an exponential or a power function of its mean. Such models have earlier been considered in Bickel (1978), Carroll and Ruppert (1982) etc. Classical as well as Bayes opt
Autor:
Gary C. McDonald, William J. Studden
Publikováno v:
Technometrics. 32:417-424
Autor:
William J. Studden, Lorens A. Imhof
Publikováno v:
Ann. Statist. 29, iss. 3 (2001), 763-783
In this paper, experimental designs for a rational model, $Y = P(x)/Q(x) + \varepsilon$, are investigated, where $P(x) = \theta_0 + \theta_1 x + \dots + \theta_p x^p$ and $Q(x) = 1 + \theta_{p + 1} x + \dots + \theta_{p+q} x^q$ are polynomials and $\