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sisal (version 0.46)
Sequential Input Selection Algorithm
Description
Implements the SISAL algorithm by Tikka and Hollmn. It is
a sequential backward selection algorithm which uses a linear
model in a cross-validation setting. Starting from the full
model, one variable at a time is removed based on the
regression coefficients. From this set of models, a
parsimonious (sparse) model is found by choosing the model with
the smallest number of variables among those models where the
validation error is smaller than a threshold. Also implements
extensions which explore larger parts of the search space
and/or use ridge regression instead of ordinary least squares.