Package copulaSFM updated to version 0.2.0 with previous version 0.1.0 dated 2026-02-18

Wed, 04 Mar 2026 23:02:00 CDT

Title: Copula-Based Stochastic Frontier Models
Description: Provides estimation procedures for copula-based stochastic frontier models for cross-sectional data. The package implements maximum likelihood estimation of stochastic frontier models allowing flexible dependence structures between inefficiency and noise terms through various copula families (e.g., Gaussian and Student-t). It enables estimation of technical efficiency scores, log-likelihood values, and information criteria (AIC and BIC). The implemented framework builds upon stochastic frontier analysis introduced by Aigner, Lovell and Schmidt (1977) <doi:10.1016/0304-4076(77)90052-5> and the copula theory described in Joe (2014, ISBN:9781466583221). Empirical applications of copula-based stochastic frontier models can be found in Wiboonpongse et al. (2015) <doi:10.1016/j.ijar.2015.06.001> and Maneejuk et al. (2017, ISBN:9783319562176).
Author: Woraphon Yamaka [aut, cre], Paravee Maneejuk [aut], Nuttaphong Kaewtathip [aut]
Maintainer: Woraphon Yamaka <woraphon.econ@gmail.com>

Diff between copulaSFM versions 0.1.0 dated 2026-02-18 and 0.2.0 dated 2026-03-04

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 man/copulasfm.Rd |  149 ++++++++++++++++++++++++--
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 10 files changed, 747 insertions(+), 226 deletions(-)

More information about copulaSFM at CRAN