Hello,
Just a quick question about ppr in library modreg. I have looked at Ripley and Venables 2002 and it says that projection pursuit works "by projecting X in M carefully chosen directions" I want to know how it choses the directions? I presume it moves around the high-dimensional space of unit vectors finding ones that separate the response variables, but how. I looked at the code, but can't get deeper in than the Fortran call to Smart. I tried to look up Friedman 87, but can't find an electronic reference. Can anyone help, or point me in the direction of an online reference? Thanks in advance, Oliver Lyttelton ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
