Package: HeckmanEM
Type: Package
Title: Fit Normal, Student-t or Contaminated Normal Heckman Selection
        Models
Version: 0.2-2
Authors@R: c(person(given = "Marcos",family = "Prates", role=c("aut","cre","trl"),
       	            email="marcosop@est.ufmg.br", comment = c(ORCID = "0000-0001-8077-4898")),
             person(given = "Victor",family="Lachos", role="aut", comment = c(ORCID = "0000-0002-7239-2459")),
             person(given = "Dipak",family="Dey", role="aut"),
             person(given = "Marcos",family= "Oliveira", role=c("aut","ctb")),
             person(given = "Christian",family = "Galarza", role="ctb"),
             person(given = "Katherine",family = "Loor", role="ctb"),
             person(given = "Alejandro",family = "Ordonez", role="ctb"))             
Description: It performs maximum likelihood estimation for the Heckman selection model (Normal, Student-t or Contaminated normal) using an EM-algorithm <doi:10.1016/j.jmva.2021.104737>. It also performs influence diagnostic through global and local influence for four possible perturbation schema. 
Imports: mvtnorm (>= 1.1-0), sampleSelection (>= 1.2-6), MomTrunc (>=
        5.79), PerformanceAnalytics (>= 2.0.4), ggplot2, methods
License: GPL-2
Encoding: UTF-8
RoxygenNote: 7.3.2
NeedsCompilation: no
Author: Marcos Prates [aut, cre, trl] (ORCID:
    <https://orcid.org/0000-0001-8077-4898>),
  Victor Lachos [aut] (ORCID: <https://orcid.org/0000-0002-7239-2459>),
  Dipak Dey [aut],
  Marcos Oliveira [aut, ctb],
  Christian Galarza [ctb],
  Katherine Loor [ctb],
  Alejandro Ordonez [ctb]
Maintainer: Marcos Prates <marcosop@est.ufmg.br>
Packaged: 2025-06-02 11:21:32 UTC; ALEJANDRO
Repository: CRAN
Date/Publication: 2025-06-02 11:50:02 UTC
Built: R 4.6.0; ; 2026-04-26 03:49:13 UTC; unix
