Results 271 to 280 of about 4,161,419 (298)
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On the Correlation Between Correlations
Biometrika, 1975Specific tests for the equality of two dependent interclass correlations, estimated from a multivariate sample, have been examined in some detail by Dunn & Clark (1969, 1971). In this paper I wish to consider the dependencies among correlation coefficients in more generality, whether interclass or intraclass, and hence to suggest appropriate large ...
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Comparison of correlated correlations
Statistics in Medicine, 1989AbstractWe consider a problem where k highly correlated variables are available, each being a candidate for predicting a dependent variable. Only one of the k variables can be chosen as a predictor and the question is whether there are significant differences in the quality of the predictors.
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Correlation of the ranges of correlated samples
Biometrika, 1967Knowledge of the correlation coefficient between the ranges of two correlated samples is required in the analysis of experimental designs by short-cut techniques (Hartley, 1950; David, 1951; Kurtz et al. 1965a, b) and in industrial quality control when the machine concerned is of the multi-spindle variety (Moore, 1958).
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An analysis of correlation matrices: Equal correlations
Biometrika, 1984In terms of the large-sample joint distribution of Z, the \(2^{-1}p(p- 1)\) Fisher z-transforms of the elements in a \(p\times p\) correlation matrix, the authors prove that the variance matrix of Z has just three projector matrices in its spectral decomposition under the hypothesis of equal population correlations.
Brien, C. J. +3 more
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Psychometrika, 1946
Formulas are presented for triserial correlation, quadriserial correlation, etc., and for serial correlation in general. These formulas are based on well-known procedures outlined by Kelley, Peters and Van Voorhis, and others, and involve Pearson's correction for “broad categories.” The formula for biserial correlation also may be developed following ...
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Formulas are presented for triserial correlation, quadriserial correlation, etc., and for serial correlation in general. These formulas are based on well-known procedures outlined by Kelley, Peters and Van Voorhis, and others, and involve Pearson's correction for “broad categories.” The formula for biserial correlation also may be developed following ...
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Correlation functions and factorial correlator data
Physical Review D, 1991The close connection between factorial moments and factorial correlators as integrals of the same underlying correlation function is explored, leading to extensions of sum rules previously suggested. Cumulants, which were previously found to be the fundamental building blocks for moments, have been analogously defined for the correlators also ...
, Eggers +3 more
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Optics Letters, 2001
Multifractional correlation is proposed that is based on a new generalized fractional Fourier transform to which we refer as a multifractional Fourier transform. The multifractional correlation yields remarkable improvements in the correlation output peak intensity, peak sharpness, and light efficiency compared with convention correlation, which uses ...
B, Zhu, S, Liu
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Multifractional correlation is proposed that is based on a new generalized fractional Fourier transform to which we refer as a multifractional Fourier transform. The multifractional correlation yields remarkable improvements in the correlation output peak intensity, peak sharpness, and light efficiency compared with convention correlation, which uses ...
B, Zhu, S, Liu
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Blurred Correlation Versus Correlation Blur
2005We discuss the topic of correlation in a scale space setting. Correlation involves two distinct scales. The “outer scale” is the scale of the region over which the correlation will be calculated. Classically this is the whole space of interest, but in many cases one desires the correlation over some region of interest. The “inner scale” is the scale at
Koenderink, J.J., van Doorn, A.J.
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Archives of Biochemistry and Biophysics, 2015
In recent years correlative microscopy, combining the power and advantages of different imaging system, e.g., light, electrons, X-ray, NMR, etc., has become an important tool for biomedical research. Among all the possible combinations of techniques, light and electron microscopy, have made an especially big step forward and are being implemented in ...
Céline, Loussert Fonta, Bruno M, Humbel
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In recent years correlative microscopy, combining the power and advantages of different imaging system, e.g., light, electrons, X-ray, NMR, etc., has become an important tool for biomedical research. Among all the possible combinations of techniques, light and electron microscopy, have made an especially big step forward and are being implemented in ...
Céline, Loussert Fonta, Bruno M, Humbel
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IEEE Transactions on Systems, Man and Cybernetics, Part B (Cybernetics), 2001
A general framework for dealing with numerical measurements in an approximate, uncertain, or fuzzy environment is presented. A fuzzy measurement is defined. It possesses several unique properties, which arise from its physical nature and distinguish it from concepts such as the fuzzy number.
D, Ramot +3 more
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A general framework for dealing with numerical measurements in an approximate, uncertain, or fuzzy environment is presented. A fuzzy measurement is defined. It possesses several unique properties, which arise from its physical nature and distinguish it from concepts such as the fuzzy number.
D, Ramot +3 more
openaire +2 more sources