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Internet Message Format  |  1992-12-31  |  1009 b 
  1. Path: sparky!uunet!noc.near.net!hri.com!enterpoop.mit.edu!usc!wupost!psuvax1!rutgers!concert!duke!news.duke.edu!duke.edu!feh
  2. From: feh@duke.edu (Frank Harrell)
  3. Newsgroups: bit.listserv.stat-l
  4. Subject: qualitative principal components
  5. Keywords: scaling
  6. Message-ID: <8289@news.duke.edu>
  7. Date: 31 Dec 92 16:00:58 GMT
  8. Sender: news@news.duke.edu
  9. Lines: 13
  10. Nntp-Posting-Host: biostat2.mc.duke.edu
  11.  
  12. What is the state of the art in scaling techniques for combinations
  13. of continuous, ordinal, polytomous, and binary variables? To me,
  14. qualitative principal components using the alternating least squares-type
  15. techniques in SAS PROC PRINQUAL look very promising, but we have had
  16. tremendous convergence problems using this procedure.
  17.  
  18. Reply to feh@biostat.mc.duke.edu            Thanks
  19.  
  20. -- 
  21. ----------------------------------------------------------------------------
  22. Frank E Harrell Jr            feh@biostat.mc.duke.edu
  23. Associate Professor of Biostatistics
  24. Division of Biometry                    Duke University Medical Center
  25.