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Discriminant Analysis with Discrete and Continuous Variables
James D. Knoke
Vol. 38, No. 1 (Mar., 1982), pp. 191-200
Published by: International Biometric Society
Stable URL: http://www.jstor.org/stable/2530302
Page Count: 10
You can always find the topics here!Topics: Error rates, Discriminants, Covariance, Discriminant analysis, Matrices, Mathematical independent variables, Continuous variables, Maximum likelihood estimation, Minimax, Biometrics
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A paradigmatic methodologic approach does not exist for the problem of discriminant analysis with both discrete and continuous explanatory variables. Procedures that have been employed in this situation include Fisher's linear discriminant function, the quadratic discriminant function, the linear discriminant function with higher-order terms, discriminant functions with logistic regression estimates of the coefficients, and the location model. Average optimal error rates for these procedures are reported for the case of one normal variable and two binary variables. These approaches are also compared for the prediction of two-year survival following recovery from myocardial infarction, employing resubstitution, jackknife and independent-sample estimates of the error rates. Recommendations for applications are presented.
Biometrics © 1982 International Biometric Society