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- logit_logLik <- function(dummy,fitted_values){
- # Description: Computes log-likelihood of a fitted
- # logit model
- # Format variables
- y <- as.matrix(dummy)
- p <- as.matrix(fitted_values)
- # Adjust dimensions
- skip <- dim(y)[1] - dim(p)[1]
- y <- as.matrix(y[-c(1:skip),])
- # Compute log-likelihood
- item <- sapply(1:dim(y)[1], function(i)
- y[i,]*log(p[i,]) + (1-y[i,])*log(1-p[i,]))
- return(sum(item))
- }
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