Displaying 12 results from an estimated 12 matches for "nij".
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nic
2007 Jan 05
2
maximum likelihood estimation of 5 parameters
...maximum likelihood estimates of theta = (a1,
b1, a2, b2, P) which defines a mixture of a Poisson distribution and two
gamma prior distributions (where the Poisson means have a gamma
distribution, actually 2 gammas and P is the mixing factor). The likelihood
function for theta is L(theta) = Pi,j{P f(Nij; a1, b1, Eij) + (1 ? P) f(Nij;
a2, b2, Eij),}
The maximum likelihood estimate of theta is the vector that maximizes the
above equation (the values of N and E are given). The authors of the article
I read say that the maximization involves an iterative search in the five
dimensional parameter space...
2007 Jan 11
1
maximum likelihood, 1st and 2nd derivative
...ed negative binomial counts
(determine the MLE). This maximisation involves a search in five-dimensional
parameter space {?: ?1,?2, ?1, ?2, P} for the vector that maximises the
likelihood as evidenced by the first and second derivatives of the function
being zero. The likelihood is L(?) = ?ij {P f (Nij; ?1, ?1, Eij) + (1-P) f
(Nij; ?2, ?2, Eij)} This involves millions of calculations. The
computational procedures required for these calculations are based on the
Newton-Raphson method. This is an old calculus-based technique that was
devised to find the roots of an equation (e.g. the values of the...
2005 May 20
1
using src/Makevars file
...i * 2
^
Invalid declaration of or reference to symbol `forall' at (^) [initially
seen at (^)]
...
----end output ----
The code compiles using:
gfortran -c estimate.f
I can run my code if I build the .so by hand and then dyn.load it.
Here is my F95 test code:
subroutine estimate(beta, yij, nij, nxrows, nxcols,xmat,
& irequest, ierror)
integer nxrows, nxcols, yij, nij, irequest, ierror
double precision beta(nxrows), xmat(nxrows,nxcols)
integer i
i = 0
c fortran 95 version
forall (i = 1:nxrows) beta(i) = i * 2
ierror = 0
end
Regards,
Joel Bremson
UC Davis
[[alternative HTML ver...
2009 May 08
1
creation of a matrix
...all
amount of unique objects) of data in a format like this:
1 text_string
1 text_string
1 text_string
2 text_string
2 text_string
3 text_string
3 text_string
3 text_string
3 text_string
3 text_string
.
.
.
n text_string
I want to create an n x p matrix, n objects (=40) and p unique text
strings. Nij is number of occurrences of a text string j in object i.
What is the most efficient way of creating this matrix?
Best regards,
Erika Ahl
2010 Jul 23
3
[LLVMdev] Questions about GPU code generation/ VS development
Hey everyone,
I've been working for a while on a virtual machine/DSL (for lack of a more
precise term) specialised for graphics. I hope to allow domain specific
optimizations, eg folding together post-processing passes, or automatic
LODing for procedural textures. I'm planning to make the renderer itself to
be defined at runtime, to allow foward rendering, deferred rendering,
raytracing,
2003 Oct 01
3
fitting Markov chains
I need to find a computationally simple process for the movement of
interest rates. In this simplified model, an interest rate can have
3--5 possible values, and its movement is characterized by a matrix of
transition probabilities (ie, it is a Markov process).
I would like to estimate this process from a given set of data.
For example, let the interest rate time series be:
7 3 8 2 5 9 6
2008 Aug 09
3
matrix name
Hello,
Presently, we are able to add additionnal info to a matrix
thanks to the nice comment() and attr() functions.
Maybe I miss some other functions ?
Since there is a always a little remaining place on the
top left when one print a matrix,
I was wondering if it won't be interesting to offer the
possibility to show some information here,
I'm thinking on something like :
> attr(M,
2006 Jun 30
3
data extraction
Dear mailing list I have a data that have 20,000 rows and 20 columns. Io
wonted to extract the 10th row only. Example the 10th, 20th, 30th 40th…..20000
th. can you please help me how do I do that.Than kyou.
Example is below.
Inpute:
AG GG GG AG
CC CC CC CC
CT CC CT CT
GG GG GG GG
CC CC CC CC
GG GG GG GG
CC CC CC CC
GG CG CG GG
GG GG GG GG
*CC CC CC CC*
AA AG AG AA
AA AA AA AA
GG AG AG GG
GG AG AG
2004 May 09
0
failure notice
...VQPzPjYCBGXsFn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...
2004 Aug 13
1
Your Amazon.com Inquiry
...Q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...
2003 Oct 14
4
Printing Issues with NT type Clients.
Hi. To begin with, I have a freshly built RedHat Linux 8.0 box running samba 2.2.8a. The kernel version is 2.4.18-14. I downloaded and compiled samba from source. I am using LPRng-3.8.9-6 as my printing system. The attached printer is a Lexmark Z22 printer and it is attached to the parralel port.
Problem:
For the life of me, I can't get NT type clients, NT4, 2K and XP to print to samba.
2007 Jun 26
0
Bug#429384: logcheck: Logcheck depends on mktemp
Package: logcheck
Version: 1.2.56
Followup-For: Bug #429384
I get the following message in my e-mail from cron: Cron <logcheck at entercom>
if [ -x /usr/sbin/logcheck ]; then nice -n10 /usr/sbin/logcheck; fi
/usr/sbin/logcheck: line 645: mktemp: command not found
/usr/sbin/logcheck: line 646: mktemp: command not found
rm: too few arguments
Try `rm --help' for more information.