Lo-Mendell-Rubin likelihood ratio test
Implements the ad-hoc adjusted likelihood ratio test (LRT) described in Formula 15 of Lo, Mendell, & Rubin (2001), or LMR LRT.
calc_lrt(n, null_ll, null_param, null_classes, alt_ll, alt_param, alt_classes)
n |
Integer. Sample size |
null_ll |
Numeric. Log-likelihood of the null model. |
null_param |
Integer. Number of parameters of the null model. |
null_classes |
Integer. Number of classes of the null model. |
alt_ll |
Numeric. Log-likelihood of the alternative model. |
alt_param |
Integer. Number of parameters of the alternative model. |
alt_classes |
Integer. Number of classes of the alternative model. |
A numeric vector containing the likelihood ratio LR, the ad-hoc corrected LMR, degrees of freedom, and the LMR p-value.
Lo Y, Mendell NR, Rubin DB. Testing the number of components in a normal mixture. Biometrika. 2001;88(3):767–778. doi:10.1093/biomet/88.3.767
calc_lrt(150L, -741.02, 8, 1, -488.91, 13, 2)
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