sfacross returns different outputChanges in 'sfaR' version to 1.0.0 (2023-06-13).
Sample selection stochastic frontier model is introduced with function
sfaselectioncross.
texreg package can be used for results output.
Robust variance-covariance matrix can be obtained using lmtest package.
Add reciprocal of efficiency.
Add Battese and Coelli (1988) efficiency in the case of sfalcmcross.
sfacross previously returns the wrong sign of the gradient. Now the correct
sign is returned.lcmcross is now replaced by sfalcmcross. Associated methods are
modified accordingly to the new class sfalcmcross.Package maintainer has changed from Yann Desjeux to K Hervé Dakpo.
Arne Henningsen is now co-author of the package. Welcome onboard!
Remove dependencies to packages dplyr, emdbook, fBasics, gsl, MASS,
moments, numDeriv, and primes.
In the case of the truncated skewed Laplace distribution, starting value for
lambda is changed from 0.03 to 1.
In the case of the uniform distribution, theta is reparameterized from
theta = exp(Wu) to theta = sqrt(12) * exp(Wu/2).
Remove initStart option from lcmcross. It is replaced with whichStart option.
Add Roxygen comments.
Changes in 'sfaR' version 0.1.1 (2022-05-05).
NEWS file.The fitted() function now works properly for objects of class sfacross.
When extraPar = TRUE, the coef() function now works properly on objects of class lcmcross for models with a number of classes (argument lcmClasses) equal to 4 or more.
None.
The efficiencies() documentation is enriched with an lcmcross example.
Updated DESCRIPTION file.
Updated startup message.
Changes in 'sfaR' version 0.1.0 (released on CRAN 2021-05-04).
efficiencies() is applied to an object of class lcmcross an additional value is returned. This new value, ineff_c#, returns the conditional inefficiency for observations classified under class# only. Therefore a value is assigned to ineff_c# only if the observations is classified under class# (i.e. Group_c = #).efficiencies() function applied to an object of class lcmcross, the values for u_c, teJLMS_c, Group_c, and PosteriorProb_c are now returned correctly. In the previous version (v 0.0.91) all observations were applied the same values when the argument lcmClasses was set to 3 and more. This bug is now fixed.None.
Updated DESCRIPTION file.
In the efficiencies() function applied to an object of class lcmcross, the returned elements have been reordered in order to better reflect the logic of the lcmcross model.
Updated efficiencies() documentation to incorporate the new ineff_c# elements returned by the function, as well as the reordering of the returned values.
Updated startup message.
First public release (released on CRAN 2021-03-05).