Using Cook's distance in polytomous logistic regression |
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| Authors: | Nirian Martín |
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| Affiliation: | Department of Statistics, Carlos III University of Madrid, Spain |
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| Abstract: | The previously unknown asymptotic distribution of Cook's distance in polytomous logistic regression is established as a linear combination of independent chi‐square random variables with one degree of freedom. An exhaustive approach to the analysis of influential covariates is developed and a new measure for the accuracy of predictions based on such a distribution is provided. Two examples with real data sets (one with continuous covariates and the other with both qualitative and quantitative covariates) are presented to illustrate the approach developed. |
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| Keywords: | multinomial sampling Cook's distance polytomous regression model |
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