Software

brglm


Bias reduction for Binomial-response Generalized Linear Models

Overview:

brglm provides a unified interface for estimation in binomial-response GLMs. Estimation can be performed using either an adjusted-score approach to bias reduction or maximum penalised likelihood, where the likelihood function is penalised by Jeffreys invariant prior, or simply maximum likelihood. The adjusted-score functions approach is the most appealing because the resultant estimator has zero bias to second order and smaller variance, and the bias-reduced estimates are always finite. Furthermore, brglm contains the tools for the construction of confidence intervals for the resultant estimates.

Author: Ioannis Kosmidis
Maintainer: Ioannis Kosmidis [aut, cre]
License: GPL 2 or greater
CRAN page
R-Forge page

profileModel


Tools for profiling inference functions for various model classes

Overview:

profileModel provides tools that can be used to calculate, evaluate, plot and use for inference the profiles of arbitrary inference functions for arbitrary 'glm'-like fitted models with linear predictors. In addition, it allows the developers of fitting procedures to use these capabilities by simply writing a function for the appropriate objective to be profiled.

Author: Ioannis Kosmidis
Maintainer:
Ioannis Kosmidis [aut, cre]
License: GPL 2 or greater
CRAN page
R-Forge page

betareg


Beta regression

Overview:

Beta regression for modeling beta-distributed dependent variables, e.g., rates and proportions. In addition to maximum likelihood regression (for both mean and precision of a beta-distributed response), bias-corrected and bias-reduced estimation as well as finite mixture models and recursive partitioning for beta regressions are provided.

Authors: Achim Zeileis [aut, cre], Francisco Cribari-Neto [aut], Bettina Gruen [aut],
Ioannis Kosmidis [aut], Alexandre B. Simas [ctb] (earlier version by),
Andrea V. Rocha [ctb] (earlier version by)
Maintainer:
Achim Zeileis
License: GPL 2 or greater
CRAN page
R-Forge page

Other tools


Overview:

Various tools that I developed for specific purposes or published work of mine appear in this section. They are distributed under GPL 2 or greater in the hope that they might be useful to someone else. Please feel free to sent me any comments, and/or suggestions for improvement.