Jorge Orestes Cerdeira <orestes@isa.utl.pt> Pedro Duarte Silva
<psilva@porto.ucp.pt> Jorge Cadima <jcadima@isa.utl.pt> Manuel
Minhoto <minhoto@uevora.pt>
A collection of functions which (i) assess the quality of
variable subsets as surrogates for a full data set, in either
an exploratory data analysis or in the context of a
multivariate linear model, and (ii) search for subsets which
are optimal under various criteria.