Calculate the case-deletion coefficience of the MLE estimation of quantile regression
ALDqr_case_deletion(y, x, tau, error, iter)
Response variable in quantile regression model
Predictors in quantile regression model. Note that: x is the independent variable matrix which including the intercept. That means, if the dimension of independent variables is p and the sample size is n, x is a n times p+1 matrix with the first column being one.
Quantile
The EM algorithm accuracy of error used in MLE estimation
The iteration frequancy for EM algorithm used in MLE estimation