Data sets and nonlinear regression models dedicated to predictive microbiology.

Fit univariate non-linear scale mixture of skew-normal(NL-SMSN) regression, details in Garay, Lachos and Abanto-Valle (2011) <doi:10.1016/j.jkss.2010.08.003> and Lachos, Bandyopadhyay and Garay (2011) <doi:10.1016/j.spl.2011.03.019>.

Non-linear least squares regression with the Levenberg-Marquardt algorithm using multiple starting values for increasing the chance that the minimum found is the global minimum.

Provides tools for working with nonlinear least squares problems.
      For the estimation of models reliable and robust tools than nls(), where the
      the Gauss-Newton method frequently stops with 'singular gradient' messages. 
      This is accomplished by using, where possible, analytic derivatives to compute
      the matrix of derivatives and a stabilization of the solution of the estimation
      equations. Tools for approximate or externally supplied derivative matrices
      are included. Bounds and masks on parameters are handled properly.

Set of functions implementing the algorithm described in Fernandez 
    Torvisco et al. (2018) for fitting separable nonlinear regression curves. 
    See Fernandez Torvisco, Rodriguez-Arias Fernandez and Cabello Sanchez (2018)
    <doi:10.2298/FIL1812233T>.

Several tools for assessing the quality of fit of a gaussian nonlinear model are provided.

Utilities and kinship information for behavior genetics and
    developmental research using the National Longitudinal Survey of Youth
    (NLSY; <https://www.nlsinfo.org/>).

Uses a modified lifting algorithm on which it builds the
        nondecimated lifting transform. It has applications in wavelet
        shrinkage.

Fits a non-linear transformation model ('nltm') for
        analyzing survival data, see Tsodikov (2003) <doi:10.1111/1467-9868.00414>. The
        class of 'nltm' includes the following currently supported
        models: Cox proportional hazard, proportional hazard cure,
        proportional odds, proportional hazard - proportional hazard
        cure, proportional hazard - proportional odds cure, Gamma
        frailty, and proportional hazard - proportional odds.