BCD - Bivariate Distributions via Conditional Specification

Implementation of bivariate binomial, geometric, and Poisson distributions based on conditional specifications. The package also includes tools for data generation and goodness-of-fit testing for these three distribution families. For methodological details, see Ghosh, Marques, and Chakraborty (2025) <doi:10.1080/03610926.2024.2315294>, Ghosh, Marques, and Chakraborty (2023) <doi:10.1080/03610918.2021.2004419>, and Ghosh, Marques, and Chakraborty (2021) <doi:10.1080/02664763.2020.1793307>.

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4.93 score 19 scripts 163 downloads

ImpShrinkage - Improved Shrinkage Estimations for Multiple Linear Regression

A variety of improved shrinkage estimators in the area of statistical analysis: unrestricted; restricted; preliminary test; improved preliminary test; Stein; and positive-rule Stein. More details can be found in chapter 7 of Saleh, A. K. Md. E. (2006) <ISBN: 978-0-471-56375-4>.

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3.60 score 4 stars 3 scripts 146 downloads

CBPE - Correlation-Based Penalized Estimators

Provides correlation-based penalty estimators for both linear and logistic regression models by implementing a new regularization method that incorporates correlation structures within the data. This method encourages a grouping effect where strongly correlated predictors tend to be in or out of the model together. See Tutz and Ulbricht (2009) <doi:10.1007/s11222-008-9088-5> and Algamal and Lee (2015) <doi:10.1016/j.eswa.2015.08.016>.

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2.70 score 1 scripts 217 downloads

TestIndVars - Testing the Independence of Variables for Specific Covariance Structures

Test the nullity of covariances, in a set of variables, using a simple univariate procedure. See Marques, Diogo, Norouzirad, Bispo (2023) <doi:10.1002/mma.9130>.

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2.70 score 1 scripts 189 downloads