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figa
2010 May 24
1
finding the best cubic spline fitting
...and also extrapolate beyond 2008. Data from 1900 to 1948 are very unreliable
while data from 1948 to 2008 are reliable. I would like to have a higher
weight for data between 1948 to 2008. I am not sure how to do this. When I
smooth data from 1948 to 2008 I get sensible results for residual plots.
fitgam=gam(mortality~te(age,year, bs="cs"))
summary(fitgam)
gam.check(fitgam
However, if I smooth all the data 1900 to 1948 I get wierd residual plots. I
have tried putting in knots i.e.
fitgam=gam(logit_temp~te(age,year, bs="cs"), knot=list(years =
c(1910,1920,1948,1958,1968,1978,198...