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作者:PERICCHI, LR
摘要:The analysis of transformation of observations in the linear model with normal errors proposed by Box and Cox (1964) is considered. A different choice of noninformative unnormed prior is advocated, which is not outcome dependent. This new selection of prior leads to a formal identity between likelihood and Bayesian inference, both for the estimation of the best transformation to normality and for the presence of homoscedasticity and additivity under this transformation. Extension to a related ...
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作者:GEISSER, S
摘要:Predictive sample reuse methods are applied in several ways to the problem of supplying values for the unobserved portion of a vector when N other similar but fully observed vectors are in hand. One method is to use a mixing matrix to to combine 2 independently calculated vector predictors into a single predictor. The other is to use regression techniques with varying constraints on the regression matrix. The methods are applied to 2 data sets [height of boys and weight gain in rats] and for 1...
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作者:TSIATIS, AA
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作者:BERMAN, M
作者单位:Commonwealth Scientific & Industrial Research Organisation (CSIRO)
摘要:Two classes of point processes, the inhomogeneous and modulated gamma processes, are defined. Asymptotic test statistics of stationarity are derived for modulated gamma processes. Some examples are studied and applied to 2 sets of data [intervals between coal mining disaster and times of arrival of patients to an intensive care unit of a hospital].
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作者:BROWN, BM
摘要:The average of 2 complementary order statistics is termed a symmetric quantile average. In addition to having good efficiency, robustness and computational properties, exact nonparametric confidence intervals for location can be derived from it. A related type of estimator called a combined quantile average is introduced; it is slightly more difficult to compute than the symmetric quantile average, but can have better efficiency and robustness properties. The recommended form of combined quant...
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作者:CHERNOFF, H; PETKAU, AJ
作者单位:Massachusetts Institute of Technology (MIT); University of British Columbia
摘要:A general approach to sequential decision-theoretic problems is illustrated with Anscombe''s formulation concerning the problem of comparing 2 treatments in a medical trial. The Bayes sequential procedure for a continuous time version of the problem is explicitly determined. Suboptimal procedures are proposed and evaluated; asymptotic results and numerical descriptions are provided. The continuous time version provides accurate approximations even for clinical trials involving relatively small...
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作者:EJIGOU, A; MCHUGH, R
作者单位:University of Minnesota System; University of Minnesota Twin Cities
摘要:Under multiple matching, relative risk from a rare disease is estimated in a retrospective design. Maximum likelihood estimation is carried out using an unconditional probability model. This model is used to derive a new estimator of relative risk which is noniterative but is as efficient, asymptotically, as the maximum likelihood estimator.
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作者:WANG, MC; VANRYZIN, J
作者单位:Washington State University; Columbia University
摘要:A class of smooth weight function estimators for discrete distributions is presented. Any estimator in the class depends on choosing a parameterized set of weights. The resulting estimators are strongly consistent and asymptotically normal under mild regularity conditions. A general procedure for choosing the weight function smoothing parameter is given along with specific solutions in some cases. Mean squared error comparisons with the maximum likelihood estimator based on large-sample theory...
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作者:ATKINSON, AC
摘要:The paper describes 2 procedures for detecting observations with outlying values either in the response variable or in the explanatory variables in multiple regression. These procedures are presented as 1/2 normal plots with envelopes derived from simulation in order to avoid overinterpretation of the data. Analysis of a well-known data set leads to the use of a data transformation and to comments on the relationship with robust regression.
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作者:SEBER, GAF; FELTON, R
作者单位:University of Auckland
摘要:A problem in the Petersen capture-mark-recapture experiment (Seber, 1973) is the possible loss of tags. The effect of such a loss on the usual estimate of population size and the estimate of its variance is investigated for both single and double tagging. When there is double tagging, a correction for tag loss can be made based on the numbers recaptured that retain 1 or both tags, provided independence of the tags can be assumed. Two cases are considered, distinguishable tags and nondistinguis...