L_hNV {ssfa} | R Documentation |
SFA half-normal log likelihood function
Description
This function is used to estimate the parameters of the classical SFA model where half-normal distribution of inefficiency term is assumed.
Usage
L_hNV(p, y = y, X = X, sc = sc)
Arguments
p |
a vector with the parameters to be estimated. |
y |
the dependent variable. |
X |
the model matrix. |
sc |
specifies the form of the frontier model (-1 = cost, 1 = production). |
Value
Value of the SFA log likelihood function.
[Package ssfa version 1.2.2 Index]