Package: sparseLM
Title: Interface to the 'sparseLM' Levenberg-Marquardt Library
Version: 0.5
Authors@R: c(
    person("Colin", "Smith", email = "colin.smith@wesleyan.edu", role = c("aut", "cre"),
           comment = c(ORCID = "0000-0002-4651-167X")),
    person("Manolis", "Lourakis", role = "aut",
           comment = c(ORCID = "0000-0003-4596-5773"))
    )
Description: Provides an R interface to the 'sparseLM' C library for
        large-scale nonlinear least squares problems with arbitrarily
        sparse Jacobians. The underlying solver implements a sparse
        variant of the Levenberg-Marquardt algorithm for minimizing
        sum-of-squares objective functions, supports user-supplied
        analytic Jacobians or finite-difference approximation, and is
        designed to exploit sparsity for improved memory use and
        performance. This package exposes the solver in R and uses
        sparse matrix classes and the 'CHOLMOD' sparse Cholesky
        factorization routines through the 'Matrix' package interface.
        Methods from the C library are described in Lourakis (2010)
        <doi:10.1007/978-3-642-15552-9_4>.
URL: https://github.com/smith-group/sparseLM,
        https://smith-group.github.io/sparseLM/
Depends: Matrix
Imports: methods
LinkingTo: Matrix
License: GPL-2
Encoding: UTF-8
NeedsCompilation: yes
Roxygen: list(markdown = TRUE)
RoxygenNote: 7.3.3
Repository: https://smith-group.r-universe.dev
Date/Publication: 2026-03-30 13:41:29 UTC
RemoteUrl: https://github.com/smith-group/sparseLM
RemoteRef: HEAD
RemoteSha: 24a5e75811d7bce5dc7d1a7949569381b1228caf
Packaged: 2026-07-03 14:34:45 UTC; root
Author: Colin Smith [aut, cre] (ORCID: <https://orcid.org/0000-0002-4651-167X>),
  Manolis Lourakis [aut] (ORCID: <https://orcid.org/0000-0003-4596-5773>)
Maintainer: Colin Smith <colin.smith@wesleyan.edu>