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piecewise linear regression
Can somebody please provide some example code or instructions on how
to perform piecewise linear (multiple) regression wih matlab (v. 6.5
or earlier). Thanks in advance.
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- In article <ef12b1a.-1.matlab.questionfor.info.webx.raydaftYaTP>, K.K. <kgk.matlab.questionfor.info.pharm.auth.gr>
> Can somebody please provide some example code or instructions on how
> to perform piecewise linear (multiple) regression wih matlab (v. 6.5
> or earlier). Thanks in advance.
Piecewise linear multiple regression? Are you asking
for a tensor product linear regression spline in
n-dimensions? There are actually several patents in my
name on the process, at least as it applies to color
characterization modeling. They would describe the
process (not that any sane person would choose to read
a US patent. I've tried, look what its done to me.) I
think that Eastman Kodak still holds those patents for
several more years. They came out in the early 90s as
I remember. (A patent search should find them, although
one of them has my name misspelled as "E'Errico".)
You do realize that a tensor product linear function in
n-dimensions is not actually truly linear for n>=2?
If you truly want a truly linear piecewise function
in n-dimensions, you would need to build a regression
model over a tessellated domain. Done that too, but
I've never patented it. There are some interesting
problems to work through.
The best material model of a cat is another, or
preferably the same, cat.
A. Rosenblueth, Philosophy of Science, 1945#1; Tue, 06 May 2008 18:23:00 GMT