Displaying 6 results from an estimated 6 matches for "alpha_".
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alpha
2007 Jul 23
1
code optimization tips
Hi,
Being new to R I'm asking for some advice on how to optimize the
performance of the following piece of code:
> alpha_c <- function(lambda=600e-9,alpha_s=1e-14,N=400,spacing=1e-7){
>
> k<-2*pi/lambda
> ri<-c(0,0) # particle at the origin
> x<-c(-N:N)
> positions <- function(N) {
> reps <- 2*N+1
> matrix(c(rep(-N:N, each = reps), rep(-N:N, times = reps)),
> n...
2005 Apr 27
0
Fitting a kind of Proportional Odds Modell using nlme, polr, lrm or ordgee
...es by study. This
means that the cut-off points associated with the distribution of the
underlying latent variable for determining the response category are
allowed to vary from study to study but are the same for both treatment
groups within a study.
It is given by
log(Q_{ijk}/(1-Q_{ijk}) = \alpha_{ik} + \beta*x_{ij} (k=1,...,m-1)
This model can be considered as arising from a latent continuos variable
. Assume that the response of the j-th subject in study i is truly equal
to G_{ij} although this latent reponse will never be observerd.
G_{ij} has a logistic distribution with:
Q_{ijk} =...
2010 Oct 13
5
Poisson Regression
Hello everyone,
I wanted to ask if there is an R-package to fit the following Poisson
regression model
log(\lambda_{ijk}) = \phi_{i} + \alpha_{j} + \beta_{k}
i=1,\cdots,N (subjects)
j=0,1 (two levels)
k=0,1 (two levels)
treating the \phi_{i} as nuinsance parameters.
Thank you very much
--
-Tony
[[alternative HTML version deleted]]
2018 Nov 01
4
Fwd: RFC: Adding debug information to LLVM to support Fortran
...can be placed. As
the common block implies a range of storage with global lifetime, the
!DICommonBlock refers to a !DIGlobalVariable. The Fortran variable that
comprise the COMMON block are also linked via metadata to offsets within
the global variable that stands for the entire common block.
@alpha_ = common global %alphabytes_ zeroinitializer, align 64, !dbg !27,
!dbg !30, !dbg !33
!14 = distinct !DISubprogram(…)
!20 = distinct !DICommonBlock(scope: !14, declaration: !25, name: "alpha")
!25 = distinct !DIGlobalVariable(scope: !20, name: "common alpha", type:
!24)
!27...
2018 Nov 01
2
RFC: Adding debug information to LLVM to support Fortran
...e) can be placed. As the common block implies a range of storage with global lifetime, the !DICommonBlock refers to a !DIGlobalVariable. The Fortran variable that comprise the COMMON block are also linked via metadata to offsets within the global variable that stands for the entire common block.
@alpha_ = common global %alphabytes_ zeroinitializer, align 64, !dbg !27, !dbg !30, !dbg !33
!14 = distinct !DISubprogram(…)
!20 = distinct !DICommonBlock(scope: !14, declaration: !25, name: "alpha")
!25 = distinct !DIGlobalVariable(scope: !20, name: "common alpha", type: !24)
!27 = !D...
2010 Oct 15
0
nomianl response model
...p at r-project.org
Subject: [R] Poisson Regression
Message-ID:
<AANLkTikXc5tvziGaxuV1GqM3CgNyPPpay-FQCC6uzQWE at mail.gmail.com>
Content-Type: text/plain
Hello everyone,
I wanted to ask if there is an R-package to fit the following Poisson
regression model
log(\lambda_{ijk}) = \phi_{i} + \alpha_{j} + \beta_{k}
i=1,\cdots,N (subjects)
j=0,1 (two levels)
k=0,1 (two levels)
treating the \phi_{i} as nuinsance parameters.
Thank you very much
--
-Tony
[[alternative HTML version deleted]]
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Message: 109
Date: Wed, 13 Oct 2010 14:54:39 -0600
From: Alisa Wade &...