Approximate Likelihoods for Generalized Linear Errors-in-variables Models

When measurement error is present in covariates, it is well known that naïvely fitting a generalized linear model results in inconsistent inferences. Several methods have been proposed to adjust for measurement error without making undue distributional assumptions about the unobserved true covariates. Stefanski and Carroll focused on an unbiased estimating function rather than a likelihood approach. Their estimating function, known as the conditional score, exists for logistic regression models but has two problems: a poorly behaved Wald test and multiple solutions. They suggested a heuristic procedure to identify the best solution that works well in practice but has little theoretical support compared with maximum likelihood estimation. To help to resolve these problems, we propose a conditional quasi-likelihood to accompany the conditional score that provides an alternative to Wald's test and successfully identifies the consistent solution in large samples.     

A GENERALIZED EMERSON RECURRENCE RELATION

The Emerson (1968, Biometrics 24 , 695–701) recurrence relation has many important applications in statistics. However, the original derivation applied only to discrete distributions. In the following, a simple derivation is given that generalizes the Emerson recurrence relation to any distribution for which the necessary expectations exist. A modern application is outlined.     

应急预案需要多少成本？

美国前总统肯尼迪曾说，“中国人用两支笔书写危机这个词，分别代表危险和机遇。在关键时刻，要意识到危险且把握好机遇。”     

A Generic Semantic Grammar for Quantitative Text Analysis: Applications to East and West Berlin Radio News Content from 1979

In a semantic text analysis the researcher begins by creating one of two types of semantic grammars, each of which provides one or more templates that specify the ways concepts (or more general themes) may be related. On the one hand, a phenomenal semantic grammar can be created to extract phenomenon-related information from a text population (e.g., "Among the population's grievances [the phenomenon of interest in this case], which were ones for the abolition of taxes?"). On the other hand, a generic semantic grammar may be developed to yield data about the text population itself (e.g., "Among all clauses in the text population, how many were grievances for the abolition of taxes?"). This paper describes a generic semantic grammar that can be used to encode themes and theme relations in every clause within randomly sampled texts. Unlike the surface-grammatical relations mapped by syntax grammars, the theme relations allowed in this grammar only permit unambiguous encoding according to the meanings that clauses were intended to convey within their social context. An application of the grammar provides a concrete illustration of its research potential.     

Advancing the Chicago School of Pragmatic Sociology: The Life and Work of Tamotsu Shibutani*

Tamotsu Shibutani is a contemporary proponent of the Chicago School of pragmatic sociology who has devoted his academic efforts to using the Chicago School of pragmatism to analyze problems of contemporary social life and to refine the theoretical tools available to the discipline of sociology. He has evaluated such topics as the Japanese relocation centers, the social construction of rumor, demoralization in Army life, the dynamics of ethnic stratification, and the resolution of ethnic tensions. Shibutani's books on social psychology and general sociology synthesize micro and macro variables, with careful attention to both agency and social control. His work is free of metaphysical puzzles and is true to the scientific method, clearly reflecting the essence of the Chicago School of pragmatic sociology.     

Social class, mental illness, and social mobility: the social selection-drift hypothesis for serious mental illness

The assumptions and methods of previous studies of the social selection-drift hypothesis for serious mental illness are examined by using comtemporary log-linear methods for social mobility analysis. The null hypothesis of no difference in intergenerational social mobility between seriously mentally ill and general population control groups cannot be rejected in previous studies by Birtchnell (1971), Goldberg and Morrison (1963), Langner and Michael (1963), and Turner and Wagenfeld (1967). The findings of this study suggest that previous empirical support for intergenerational social mobility differences is an artifact of not controlling for group differences in origins and destinations when collapsed origin-by-destination tables are analyzed. This study suggests that intergenerational social mobility differences between seriously mentally ill and general population groups in previous studies provide very little, if any, empirical support for social selection-drift processes in serious mental illness.     

Eigenvalue—Free methods for computing the distribution of a quadratic form in normal variables

The traditional method for computing the distribution of a quadratic form in normal variables, Pr(v'Qv相似文献