Re: [R] PLS method

2006-07-08 Thread Spencer Graves
I believe that regression coefficients can change signs in partial least squares (pls) or in the related structural equation modeling (sem) for roughly the same reasons they can change sign in ordinary least squares (ols). Both PLS and SEM essentially assume that the 'independent' va

[R] PLS method

2006-07-05 Thread Sun Jia
dear all, I am a new comer to R and statistic. Now I have a little confuse about the package pls. I have to use 5 components to form a model. There are strong relationship between some of the components, which leads to the changes of the sign of each coeficeince, of course this is unwanted when