Compute starting values for rdif.

Compute starting values for rdif.

Usage

get_starts(mle, fun = "d_fun3", alpha = 0.05)

Arguments

mle

the output of get_model_parms

fun

one of c("a_fun1", "a_fun2", "d_fun1", "d_fun2", "d_fun3"). See description for details.

alpha

the desired false positive rate for flagging items with DIF.

Value

A vector containing the median of y_fun, the least trimmed squares estimate of location for y_fun with 50-percent trim rate, and the minimum of rho_grid.