[S] generalising regression smoothers

Bill Shipley (bshipley@courrier.usherb.ca)
Thu, 19 Nov 1998 10:18:06 -0500


Hello everyone,
the regression smoothers in SPLUS (loess, cubic splines...) require a
constant neighbourhood size (span) over the entire range of independent
variables. I can imagine cases in which changes in the dependent variable
occur much more rapidly in certain regions than in others. For such cases,
one might wish to allow the neighbourhood size to change in different
regions. Does anyone know if this has been studied? Has it been
incorporated into an SPLUS function?
Bill Shipley
Departement de Biologie
Universite de Sherbrooke
Sherbrooke (Quebec)
CANADA J1K 2R1
bshipley@courrier.USherb.ca
voix: 819-821-8000 poste 2079
telecopieur: 819-821-8049
Visitez notre site WEB : http://www.usherb.ca/SCES/BIO/index.html

-----------------------------------------------------------------------
This message was distributed by s-news@wubios.wustl.edu. To unsubscribe
send e-mail to s-news-request@wubios.wustl.edu with the BODY of the
message: unsubscribe s-news