Displaying 2 results from an estimated 2 matches for "aati".
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2011 Jun 18
1
Trouble with Paste and Quotes and List Objects
...although I don't think that knowledge of
quantmod is necessary to help with this problem).
> str(listfinobj)
chr [1:4815] "A.f" "AA.f" "AACC.f" "AAME.f" "AAN.f" "AAON.f" "AAP.f"
"AAPL.f" "AAT.f" "AATI.f" "AAU.f" ...
I can easily pick out the 3rd object in this list.
> listfinobj[[3]]
[1] "AACC.f"
Each of the .f objects has a mildly complicated structure (partial results
shown below).
> str(AACC.f)
List of 3
$ IS:List of 2
..$ Q: num [1:49, 1:5] 50.4 NA 50.4 NA...
2009 Jul 02
2
constrained optimisation in R.
i want to estimate parameters with maximum likelihood method with contraints (contant numbers).
for example
sum(Ai)=0 and sum(Bi)=0
i have done it without the constraints but i realised that i have to use the contraints.
Without constraints(just a part-not complete):
skellamreg_LL=function(parameters,z,design)
{
n=length(z);
mu=parameters[1];
H=parameters[2];
Apar=parameters[3:10];