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作者：TSAI, WY; JEWELL, NP; WANG, MC
作者单位：University of California System; University of California Berkeley; University of California System; University of California Berkeley; Johns Hopkins University
摘要：In many applications involving follow-up studies, individuals'' lifetimes may be subject to left truncation in addition to the usual right censoring. Here we consider the product-limit estimator of the survival curve S or an appropriate conditional version of S. The asymptotic behaviour of the estimator is briefly described together with an example.
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作者：GOFFINET, B
摘要：It is demonstrated that, when a complete sufficient statistic exists, weaker conditions than those of Rubin (1976) are sufficient to allow one to make inferences about the sampling distribution in the case of missing data, where the process that causes missing data is not independent of the data. An example from animal breeding is presented.
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作者：PORTEOUS, BT
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作者：STEFANSKI, LA; CARROLL, RJ
作者单位：University of North Carolina; University of North Carolina Chapel Hill
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作者：FEDERER, WT; RAGHAVARAO, D
作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); Temple University
摘要：Suppose that n of m cultivars are grown together in a mixture such as that found in intercropping investigations. Response model equations for n = 2 are formulated in a manner akin to that found for a diallel crossing experiment in genetics. This situation varies considerably from diallel crossing in that n .gtoreq. 2 and yields may or may not be available for each member of the mixture. Response model equations are formulated and then minimal treatment designs obtained to derive least-squares...
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作者：SILVERMAN, BW; YOUNG, GA
作者单位：University of Cambridge
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作者：DEWANJI, A; KALBFLEISCH, JD
作者单位：University of Waterloo
摘要：The EM algorithm is used to develop procedures for estimating the interoccurrence distributions when n independent and identically distributed cyclic semi-Markov processes, each being ergodic, irreducible and in equilibrium, are observed over finite windows. This work is an extension of Vardi (1982a, b) who considers a similar problem for renewal processes and develops the RT algorithm for estimation of the common interoccurrence distribution. The results are illustrated using simulations for ...
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作者：ROSENBAUM, PR
摘要：In observational studies, treatments are not randomly assigned to experiental units, so that randomization tests and their associated interval estimates are not generally applicable. In an effort to compensate for the lack of randomization, treated and control units are often matched on the basis of observed covariates; however, the possibility remains of bias due to residual imbalances in unobserved covariates. A general though simple method is proposed for displaying the sensitivity of permu...
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作者：HALL, P; WATSON, GS; CABRERA, J
作者单位：Princeton University; Rutgers University System; Rutgers University New Brunswick
摘要：We study two natural classes of kernel density estimators for use with spherical data. Members of both classes have already been used in practice. The classes have an element in common, but for the most part they are disjoint. However, all members of the first class are asymptotically equivalent to one another, and to a single element of the second class. In this sense class ''contains'' the first. It includes some estimators which out-perform all those in the first class, if loss is measured ...
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作者：SINGH, B; WRIGHT, FT
作者单位：University of Missouri System; Missouri University of Science & Technology
