R help - Sep 2009 - Ridge and PLS grouping property

Dear all,
              I have collected the standardize regression coefficients of
Ridge and PLS.
As theory says that Ridge and PLS can retain the grouping property. How can
I see such grouping properties in  a data sets i.e group of correlated
variables will get similar coefficients. But how similar they should be?



Thanks

-- 
Linda Garcia

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