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作者:STANISWALIS, JG; SEVERINI, TA
作者单位:Northwestern University
摘要:We concern ourselves with diagnostics for checking the overall and local goodness of fit of a model s(x) used in the regression of Y on x is-an-element-of U = [0, 1]d. The model for s(x) is a functional form that depends on a finite number of unknown parameters. Two statistics, LAMBDA and LAMBDA-w, are proposed that measure the level of agreement between the model fit to the data and the nonparametric kernel estimator on m preselected points in U. Conditions are given under which LAMBDA and LA...
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作者:BRADLEY, RA; STEWART, FP
摘要:A multidimensional block design (MBD) is an amalgamation of d < 1 component block designs. It may be represented as a d-dimensional lattice with b* = PI-s = 1d b(s) nodes, where b(s) is the number of blocks in the sth component block design. The (j1, ..., j(d))-node of the lattice may have h(i, j1, ..., j(d)) greater-than-or-equal-to 0 experimental units assigned to treatment i, i = 1, ..., nu, j(s) = 1, ..., b(s), s = 1, ..., d, where nu is the number of treatments. If each node of the lattic...
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作者:PEPE, MS
摘要:Kaplan-Meier and cumulative incidence functions are not sufficient descriptive devices for studies that have multiple time-to-event endpoints. For example, in cancer treatment research the probability of tumor recurrence conditional on not having died from treatment-related toxicities and the prevalence of graft-versus-host disease among leukemia-free patients surviving a bone marrow transplant are of interest. These quantities can be estimated nonparametrically using simple functions of sever...
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作者:MEE, RW
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作者:GUTTORP, P; THOMPSON, ML
作者单位:University of Cape Town
摘要:To study patterns of volcanicity it is important to use historical data. These data are, however, frequently incomplete. We develop a nonparametric procedure for estimating second-order parameters of the point process of eruption starts from a catalog. This method requires an assumption of underlying stationarity, of smoothness of the probability of recording an eruption as a function of time, and of independence of this probability from the history of the process. We illustrate the procedure ...
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作者:GOODMAN, LA
作者单位:University of California System; University of California Berkeley
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作者:CAUSEY, BD; WOLTER, KM
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作者:DIEBOLD, FX; RUDEBUSCH, GD
作者单位:Federal Reserve System - USA; Federal Reserve System Board of Governors
摘要:We examine the ability of the composite index of leading economic indicators to predict future movements in aggregate economic activity. Previous examinations of predictive performance have evaluated either the in-sample residual errors from a forecasting equation fitted to the entire sample of data or the out-of-sample forecast errors from an equation fitted to a subsample of the data. Unlike previous evaluations, we perform a real-time analysis, which uses the provisional and partially revis...
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作者:SPEED, TP
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作者:PEARSON, RW
摘要:Social statistics have played a large role in describing the nature of the problem of an emerging urban underclass in the United States and in placing these issues on the public agenda and before the research community. Extant social statistics, however, are inadequate to the task of understanding the processes and mechanisms that create, maintain, or overcome the conditions and consequences of the urban underclass. Without theoretically informed social statistics of organizations and institut...