Package: fddm
Type: Package
Title: Fast Implementation of the Diffusion Decision Model
Version: 1.0-2
Authors@R: c(person(given="Kendal B.", family="Foster", role=c("aut")),
             person(given="Henrik", family="Singmann", role=c("ctb", "cre"),
             email="singmann@gmail.com", comment=c(ORCID="0000-0002-4842-3657")),
             person(given = "Achim", family = "Zeileis", role = "ctb", 
             comment = "methods partially taken from betareg"))
Description: Provides the probability density function (PDF), cumulative
  distribution function (CDF), the first-order and second-order partial
  derivatives of the PDF, and a fitting function for the diffusion decision
  model (DDM; e.g.,
  Ratcliff & McKoon, 2008, <doi:10.1162/neco.2008.12-06-420>) with across-trial
  variability in the drift rate. Because the PDF, its partial derivatives, and
  the CDF of the DDM both contain an infinite sum, they need to be approximated.
  'fddm' implements all published approximations
  (Navarro & Fuss, 2009, <doi:10.1016/j.jmp.2009.02.003>;
  Gondan, Blurton, & Kesselmeier, 2014, <doi:10.1016/j.jmp.2014.05.002>;
  Blurton, Kesselmeier, & Gondan, 2017, <doi:10.1016/j.jmp.2016.11.003>;
  Hartmann & Klauer, 2021, <doi:10.1016/j.jmp.2021.102550>) plus
  new approximations. All approximations are implemented purely in 'C++'
  providing faster speed than existing packages.
License: GPL (>= 2)
Imports: Rcpp (>= 1.0.1), stats, methods, Formula
LinkingTo: Rcpp, RcppEigen
Depends: R (>= 3.5.0)
Suggests: rtdists, RWiener, ggplot2, reshape2, testthat, knitr,
        rmarkdown, microbenchmark, ggnewscale, ggforce, WienR, emmeans,
        estimability, lmtest, numDeriv
URL: https://github.com/rtdists/fddm
BugReports: https://github.com/rtdists/fddm/issues
RoxygenNote: 7.3.1
Encoding: UTF-8
VignetteBuilder: knitr
NeedsCompilation: yes
Packaged: 2024-07-01 13:22:08 UTC; kendal
Author: Kendal B. Foster [aut],
  Henrik Singmann [ctb, cre] (<https://orcid.org/0000-0002-4842-3657>),
  Achim Zeileis [ctb] (methods partially taken from betareg)
Maintainer: Henrik Singmann <singmann@gmail.com>
Repository: CRAN
Date/Publication: 2024-07-02 16:00:07 UTC
Built: R 4.4.3; x86_64-w64-mingw32; 2025-10-21 12:31:34 UTC; windows
Archs: x64
