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- W2050450082 abstract "There are many researches that have considered the distribution functions and appropriate covariates corresponding to the scores in order to improve the accuracy of a diagnostic test, including the ROC curve that is represented with the relations of the sensitivity and the specificity. The ROC analysis was used by the regression model including some covariates under the assumptions that its distribution function is known or estimable. In this work, we consider a general situation that both the distribution function and the elects of covariates are unknown. For the ROC analysis, the mixtures of normal distributions are used to estimate the distribution function fitted to the credit evaluation data that is consisted of the score random variable and two sub-populations of parameters. The AUC measure is explored to compare with the nonparametric and empirical ROC curve. We conclude that the method using normal mixtures is fitted to the classical one better than other methods." @default.
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- W2050450082 date "2011-04-30" @default.
- W2050450082 modified "2023-10-18" @default.
- W2050450082 title "ROC Curve Fitting with Normal Mixtures" @default.
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- W2050450082 doi "https://doi.org/10.5351/kjas.2011.24.2.269" @default.
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