Estimation, selection and comparison of several families of transformations. The families of transformations included in the package are the following: Bickel-Doksum, Box-Cox, Dual, Glog, Gpower, Log, Log-shift opt, Manly, Modulus, Neglog, Reciprocal and Yeo-Johnson. The package simplifies to compare linear models with untransformed and transformed dependent variable as well as linear models where the dependent variable is transformed with different transformations. Furthermore, the package employs maximum likelihood approaches, skewness and divergence minimization to estimate the optimal transformation parameter.
An overview of all currently provided functions can be requested by
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