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141.
Sik-Yum Lee 《Psychometrika》1978,43(3):427-431
Theg
1- andg
2-bipartial canonical correlation analyses are developed as generalizations of the partial, part, and bipartial canonical correlation analysis. Illustrative examples are provided. 相似文献
142.
We trace self-reference phenomena to the possibility of namingfunctions by names that belong to the domain over which thefunctions are defined. A naming system is a structure of theform (D, type( ),{ }), where D is a non-empty set; for everya D, which is a name of a k-ary function, {a}: Dk D is thefunction named by a, and type(a) is the type of a, which tellsus if a is a name and, if it is, the arity of the named function.Under quite general conditions we get a fixed point theorem,whose special cases include the fixed point theorem underlyingGödel's proof, Kleene's recursion theorem and many othertheorems of this nature, including the solution to simultaneousfixed point equations. Partial functions are accommodated byincluding "undefined" values; we investigate different systemsarising out of different ways of dealing with them. Many-sortednaming systems are suggested as a natural approach to generalcomputatability with many data types over arbitrary structures.The first part of the paper is a historical reconstruction ofthe way Gödel probably derived his proof from Cantor'sdiagonalization, through the semantic version of Richard. Theincompleteness proofincluding the fixed point constructionresultfrom a natural line of thought, thereby dispelling the appearanceof a "magic trick". The analysis goes on to show how Kleene'srecursion theorem is obtained along the same lines. 相似文献
143.
144.
A second order approximation to the sample influence curve (SIC) in canonical correlation analysis has been derived in the
literature. However, it does not seem satisfactory for some cases. In this paper, we present a more accurate second order
approximation. As a particular case, the proposed method is exact for the SIC of the squared multiple correlation coefficient.
An example is given.
The authors are most grateful to the associate editor and three reviewers for valuable comments and suggestions which improved
the presentation of the paper considerably. The first author was partly supported by a RGC earmarked research grant of Hong
Kong. 相似文献
145.
Huynh Huynh 《Psychometrika》1996,61(1):31-39
For each Rasch (Masters) partial credit item, there exists a set of independent Rasch binary and indecomposable trinary items
for which the sum of the scores and the partial credit score have identical probability density functions. If each indecomposable
trinary item is further expressed as the sum of two binary items, then the binary items are positively dependent and cannot
be both of the Rasch type.
This paper was written while the author was working with Steve Ferrara and Hillary Michaels on some technical aspects of the
Maryland School Performance Assessment Program. The author had been puzzled by the fact that most MSPAP assessment items have
three or less score categories. With a psychometric justification now being apparent, this paper is dedicated to both of them. 相似文献
146.
This paper discusses the application of a class of Rasch models to situations where test items are grouped into subsets and the common attributes of items within these subsets brings into question the usual assumption of conditional independence. The models are all expressed as particular cases of the random coefficients multinomial logit model developed by Adams and Wilson. This formulation allows a very flexible approach to the specification of alternative models, and makes model testing particularly straightforward. The use of the models is illustrated using item bundles constructed in the framework of the SOLO taxonomy of Biggs and Collis.The work of both authors was supported by fellowships from the National Academy of Education Spencer Fellowship. 相似文献
147.
Edward J. Bedrick 《Psychometrika》1990,55(2):217-228
The asymptotic distributions of Brogden's and Lord's modified sample biserial correlation coefficients are derived. The asymptotic variances of these estimators are evaluated for bivariate normal populations and compared to the asymptotic variance of the maximum likelihood estimator.The author would like to thank the referees for several suggestions which improved the presentation of the paper. 相似文献
148.
A reparameterization is formulated that yields estimates of scale-invariant parameters in recursive path models with latent variables, and (asymptotically) correct standard errors, without the use of constrained optimization. The method is based on the logical structure of the reticular action model. 相似文献
149.
Zegers' (1986) chance-corrected coefficients of association are derived by alternative methods. A different definition of chance correction is used. It is shown that our correction and that of Zegers are identical for large samples. Three possible assumptions for the derivation of metric coefficients are examined. The first, variable reflection, formulated by Zegers and ten Berge (1985), leads to coefficients that require chance-correction. Two other assumptions, zero covariance and covariance reflection, are proposed and it is shown that the latter two assumptions lead directly to coefficients of identity and proportionality that do not require chance correction (i.e., are identical to the Zegers, 1986, corrected coefficients).We are indebted to Robyn M. Dawes, Carnegie-Mellon University, for stimulating our interest in this project, and for helpful suggestions. 相似文献
150.
Ariel M. Aloe 《The Journal of general psychology》2014,141(1):47-64
ABSTRACT. The partial correlation and the semi-partial correlation can be seen as measures of partial effect sizes for the correlational family. Thus, both indices have been used in the meta-analysis literature to represent the relationship between an outcome and a predictor of interest, controlling for the effect of other variables in the model. This article evaluates the accuracy of synthesizing these two indices under different situations. Both partial correlation and the semi-partial correlation appear to behave as expected with respect to bias and root mean squared error (RMSE). However, the partial correlation seems to outperform the semi-partial correlation regarding Type I error of the homogeneity test (Q statistic). Although further investigation is needed to fully understand the impact of meta-analyzing partial effect sizes, the current study demonstrates the accuracy of both indices. 相似文献