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webcolleges
2011 Sep 01
1
Hysteresis modeling and simulation
Can anyone suggest a package or code for modeling a hysteresis process in R?
I'm currently modeling a certain dataset with a GAM using mgcv, something
like
gam(y~ s(x, by=z) + z, family = Gamma(link=log),data=data)
and getting fits with about 9 estimated degrees of freedom in the smooth for
each value of z. FWIW, z is a treatment applied to a system which should
have made an improvement,