Results 91 to 100 of about 483 (131)

Maximum Likelihood and Gaussian Estimation of Continuous Time Models in Finance

open access: yes
This paper overviews maximum likelihood and Gaussian methods of estimating continuous time models used in finance. Since the exact likelihood can be constructed only in special cases, much attention has been devoted to the development of methods designed
Jun Yu, Peter C. B. Phillips
core  

A Comparison of Saddlepoint Approximations for Marginal Distributions

open access: yes
We discuss some recent (nonparametric) approximations of tail probabilities of marginal distributions. They are based on saddlepoint techniques and have an error of order n-1.
Elvezio Ronchetti
core  

Saddlepoint Approximations with Applications

open access: yesJournal of the Royal Statistical Society Series A: Statistics in Society, 2008
openaire   +1 more source

SADDLEPOINT AND ESTIMATED SADDLEPOINT APPROXIMATIONS FOR OPTIMAL UNIT ROOT TESTS

open access: yesEconometric Theory, 2011
This paper provides a (saddlepoint) tail probability approximation for the distribution of an optimal unit root test. Under restrictive assumptions, Gaussianity, and known covariance structure, the order of error of the approximation is given. More generally, when innovations are a linear process in martingale differences, the estimated saddlepoint is ...
Patrick Marsh
openaire   +2 more sources

Implementation of saddlepoint approximations in resampling problems

open access: yesStatistics and Computing, 1999
In many situations saddlepoint approximations can replace the Monte Carlo simulation typically used to find the bootstrap distribution of a statistic. We explain how bootstrap and permutation distributions can be expressed as conditional distributions and how methods for linear programming and for fitting generalized linear models can be used to find ...
Angelo J. Canty, Anthony C. Davison
openaire   +2 more sources

Partial Saddlepoint Approximations for Transformed Means

open access: yesScandinavian Journal of Statistics, 2002
The full saddlepoint approximation for real valued smooth functions of means requires the existence of the joint cumulant generating function for the entire vector of random variables which are being transformed. We propose a mixed saddlepoint‐Edgeworth approximation requiring the existence of a cumulant generating function for only part of the random ...
Jing, Bing Yi, Kolassa, JE, Robinson, J.
openaire   +2 more sources

Saddlepoint approximations

open access: yes, 2015
The saddlepoint method provides accurate approximations for the distributions of many test statistics, estimators and for important probabilities arising in various stochastic models. The saddlepoint approximation is a large deviations technique which is
Gatto, Riccardo, Riccardo Gatto
openaire   +3 more sources

Saddlepoint approximations to the trimmed mean

open access: yesBernoulli, 2004
Saddlepoint approximations for the trimmed mean and the studentized trimmed mean are established. Some numerical evidence on the quality of our saddlepoint approximations is also included.
Bing-Yi Jing, Gengsheng Qin
exaly   +2 more sources

Uniformity of Double Saddlepoint Conditional Probability Approximations

open access: yesJournal of Multivariate Analysis, 1998
This paper presents results showing that the error involved in using the double saddlepoint distribution function approximations of Skovgaard (1987,J. Appl. Probab.24875–887) are uniformly bounded.
John E Kolassa
exaly   +2 more sources

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