Displaying 2 results from an estimated 2 matches for "gamma4".
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gamma
2002 Feb 17
3
Little graph questions!
...ontained
things that show things that R can do and people can run without too
much trouble.
Anyway, I have hit these problems (questions)
1. When I use paste to edit a title, it inserts spaces where I don't
want them.
See the picture here:
http://lark.cc.ukans.edu/~pauljohn/R/ExampleCode/gamma4.png
and note that, after the equal signs and the number 1, there is a space
inserted whenever there is a comma separating text from variable. The
code in question is:
http://lark.cc.ukans.edu/~pauljohn/R/ExampleCode/template_gamma4.r
the line I use to set the title is:
oneHist <- hist(oneG...
2009 Apr 11
2
who happenly read these two paper Mohsen Pourahmadi (biometrika1999, 2000)
...r close output as he did,so,any one who
have happenly read his paper,got any idea how he got the LS estimates of
gamma.
he assumed the autoregressive phi_tj satisfy the cubic function on lag of
time,where t is from 1 to 11,j from 1 to t-1,his model is:
phi_tj=gamma1+gamma2*(t-j)+gamma3*(t-j)^2+gamma4*(t-j)^3, #biometrika
1999,page685
at first moment ,I thougt my design matrix should be
1 1 1 1
1 2 4 8
1 3 9 27.....
but I found this is wrong,actually I should(I think) use a polynomial design
matirx with level of 11,degree=3
here is my rocode~~
y1=c(1,0.9,0.98,1.06,0.83,1.00,0.41...