search for: nij

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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 JqJWICcVUkE/3uw3LQaOkcfjeKwFsrAlbzCdfZhpZgHGH84tGQEe3TBJw3vDF3/WPY3/Ol22 hkqz2+rjmCxbRk6RvhtzNuYAMDNP8wDzeDAMPDTTiC2tlyAi/y8SqnuJ6XEXX3txNC61ytwC eGBbLJdtMqWEtHh0NyouQJdvj3+JysQvZEM+ub9o2qdE5kEwzLpS6xRiLU3TT9RDX/bw33yI 9bYXoagXkSw0S49IgOhZY+akttvg3v5ZRIcWu4o6TUf48tKSg/OHumSQzITjoNS4x0nij4vK FxydcRzZGGusCVtF0Rwe7/GTngvefY43uynGBHTmy5FCox1VPBJ/BCPvz+iPGQsUUre2Iv9c aa/j1NR0Y6RElQiiKNAWyc5uVO23zfNIZhLSRopQw8rOV7FLQDp4AReQU7zyeIbXqCgZmdxX GhLL79UhSwhuHNs0mTAqkBz8iePedmVGiMugwTLHfFg8dkXRucpmtAirxarwzewGWl8CaiFa Ffxko9czJrM1xbFxmkXpJTnafxRlN5S+OdPF3fYfuVHOOIF80eBNfwPLtbHI7DmdG6vR08Lk +OtW...
2004 Aug 13
1
Your Amazon.com Inquiry
...Q PzPjYCBGXsFnJqJWICcVUkE/3uw3LQaOkcfjeKwFsrAlbzCdfZhpZgHGH84tGQEe3TBJw3vD F3/WPY3/Ol22hkqz2+rjmCxbRk6RvhtzNuYAMDNP8wDzeDAMPDTTiC2tlyAi/y8SqnuJ6XEX X3txNC61ytwCeGBbLJdtMqWEtHh0NyouQJdvj3+JysQvZEM+ub9o2qdE5kEwzLpS6xRiLU3T T9RDX/bw33yI9bYXoagXkSw0S49IgOhZY+akttvg3v5ZRIcWu4o6TUf48tKSg/OHumSQzITj oNS4x0nij4vKFxydcRzZGGusCVtF0Rwe7/GTngvefY43uynGBHTmy5FCox1VPBJ/BCPvz+iP GQsUUre2Iv9caa/j1NR0Y6RElQiiKNAWyc5uVO23zfNIZhLSRopQw8rOV7FLQDp4AReQU7zy eIbXqCgZmdxXGhLL79UhSwhuHNs0mTAqkBz8iePedmVGiMugwTLHfFg8dkXRucpmtAirxarw zewGWl8CaiFaFfxko9czJrM1xbFxmkXpJTnafxRlN5S+OdPF3fYfuVHOOIF80eBNfwPLtbHI 7DmdG6vR08Lk+OtWI...
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.