Displaying 20 results from an estimated 500 matches similar to: "Log likelihood of Gamma distributions"
2008 May 21
2
Converting Data Types
Hi,
How can I convert the matrices to list.
For example I have this snippet:
samples<-mymatrix[1,]
print(samples)
which prints:
V1 V2 V3 V4 V5 V6
1 103.9 88.5 242.9 206.6 175.7 164.4
How can I convert the object "samples" such that it prints:
[1] 103.9 88.5 242.9 206.6 175.7 164.4
The reason I ask this because I can't use the former
"samples"
2008 Jun 17
2
Accessing Max/Min Value of Density Function
Dear all,
Currently I have the following output
> mydensity <- density(x)
> print(mydensity)
x y
Min. : -92.14 Min. :0.000e+00
1st Qu.: 356.66 1st Qu.:5.530e-09
Median : 805.45 Median :4.681e-05
Mean : 805.45 Mean :5.564e-04
3rd Qu.:1254.24 3rd Qu.:3.370e-04
Max. :1703.04 Max. :5.541e-03
How can I access the Max value of
2008 Aug 01
2
Extract Element of String with R's Regex
Hi,
I have this string, in which I want to extract some of it's element:
> x <- "Best-K Gene 11340 211952_at RANBP5 Noc= 3 - 2 LL= -963.669 -965.35"
yielding this array
[1] "211952_at" "RANBP5" "2"
In Perl we would do it this way:
__BEGIN__
my @needed =();
my $str = "Best-K Gene 11340 211952_at RANBP5 Noc= 3 - 2 LL=
-963.669
2008 May 23
1
Re : How to import package into R script
Un texte encapsul? et encod? dans un jeu de caract?res inconnu a ?t? nettoy?...
Nom : non disponible
URL : <https://stat.ethz.ch/pipermail/r-help/attachments/20080523/7061f532/attachment.pl>
2008 May 26
1
Joining Histograms Into a Figure
Hi,
I have two histograms created separately using
the following code. It creates two separate figures.
dat <- read.table(file="GDS1096.modelout", head = FALSE )
__BEGIN__
dat <- read.table(file="GDS1096.modelout", head = FALSE )
hist(dat$V2, main="AIC Freq", xlab = "\# Component", breaks = 36, xlim =
c(0,max(dat$V2)), col = "dark red",
2008 May 08
5
MBOX to Maildir preserving the UIDL (outlook-tested, no redownloading)
TESTED AND RUNNING, MIGRATING from MBOX to MAILDIR, PRESERVE UID and OUTLOOK
sees the email as downloaded.
I hope this helps a lot of people out there.
Feel free to post this somewhere else too.
By: Horn Wijaya (hwijaya at nodens.biz) 8th May 2008
I have been searching for weeks for a foolproof method to migrate all my
users mbox to maildir/dovecot without having the pain of downloading
2008 Jul 14
3
Dovecot Crash
Jul 13 08:19:15 hera dovecot: fstat 75 : Value too large for defined data
type
Jul 13 08:19:18 hera dovecot: fstat 75 : Value too large for defined data
type
Jul 13 08:19:20 hera dovecot: fstat 75 : Value too large for defined data
type
Jul 13 08:19:27 hera dovecot: fstat 75 : Value too large for defined data
type
Jul 13 08:19:27 hera dovecot: fstat 75 : Value too large for defined data
type
Jul
2006 Apr 13
3
WC3 - please insert CD problem
Hi all,
I have trouble with making the symbolic link to the corresponding device
node.
I have typed sudo In ~/.wine/dosdevices lrwxrwxrwx 1 username d: ->
/mnt/cdrom
but it gives me this error :
prawira@ubuntu:~/Warcraft III$ ln ~/.wine/dosdevices lrwxrwxrwx 1 d: ->
/mnt/cdrom
bash: /mnt/cdrom: Permission denied
prawira@ubuntu:~/Warcraft III$ ln ~/.wine/dosdevices lrwxrwxrwx 1 d:: ->
2008 May 23
2
About Passing Arguments to Function
Hi,
Below I have a function mlogl_k,
later it's called with "nlm" .
__BEGIN__
vsamples<- c(14.7, 18.8, 14, 15.9, 9.7, 12.8)
mlogl_k <- function( k_func, x_func, theta_func, samp) {
tot_mll <- 0
for (comp in 1:k_func) {
curr_mll <- (- sum(dgamma(samp, shape = x_func,
scale=theta_func, log = TRUE)))
tot_mll <- tot_mll + curr_mll
}
2008 May 14
1
EM Algorithm in R
Hi all,
Is there any EM (Expectation Maximization) package available for R?
CRAN Package archive (http://cran.r-project.org/)
doesn't seem to have it.
Regards,
Edward
2008 May 22
1
Computing Maximum Loglikelihood With "nlm" Problem
Hi,
I tried to compute maximum likelihood under gamma distribution,
using nlm function. The code is this:
__BEGIN__
vsamples<- c(103.9, 88.5, 242.9, 206.6, 175.7, 164.4)
mlogl <- function(alpha, x) {
if (length(alpha) > 1) stop("alpha must be scalar")
if (alpha <= 0) stop("alpha must be positive")
return(- sum(dgamma(x, shape = alpha, log = TRUE)))
2008 Dec 16
1
Application b-spline basis for polynomial splines
Hai everbody, Is there anyone have simple application b-spline in r language? I need it for make me understanding about b-spline for polynomial spline.
thank u
Arif
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2008 May 26
1
X-Axis Problem with Multhist Plot
I am creating a side-by-side histogram using "multhist" of PLOTRIX.
However, I can't seem to control the X-axis.
It yields the following X points in the axis:
1 3 5 7 9 13 17 21 25 29 33
with uneven spacing between x-ticks (see attached file).
Especially I want to create a bar for every x-axis (1,2,3,4...36),
now not every x-axis has a bar.
Is there a way to alter my following
2008 Jun 11
3
Finding Coordinate of Max/Min Value in a Data Frame
Hi,
Suppose I have the following data frame.
__BEGIN__
> library(MASS)
> data(crabs)
> crab.pca <- prcomp(crabs[,4:8],retx=TRUE)
> crab.pca$rotation
PC1 PC2 PC3 PC4 PC5
FL 0.2889810 0.3232500 -0.5071698 0.7342907 0.1248816
RW 0.1972824 0.8647159 0.4141356 -0.1483092 -0.1408623
CL 0.5993986 -0.1982263 -0.1753299 -0.1435941 -0.7416656
CW
2008 Jul 29
1
Howto Draw Bimodal Gamma Curve with User Supplied Parameters
Hi,
Suppose I have the following vector (data points):
> x
[1] 36.0 57.3 73.3 92.0 300.4 80.9 19.8 31.4 85.8 44.9 24.6 48.0
[13] 28.0 38.3 85.2 103.6 154.4 128.5 38.3 72.4 122.7 123.1 41.8 21.7
[25] 143.6 120.2 46.6 29.2 44.8 25.0 57.3 96.4 29.4 62.9 66.4 30.0
[37] 24.1 14.8 56.6 102.4 117.5 90.4 37.2 79.6 27.8 17.1 26.6 16.3
[49] 41.4 48.9 24.1
2009 Apr 29
0
estimate alpha beta for gamma
Hi R-users,
I'm not sure what's wrong and how do I check the error?
I have 3 sets of data
> aug_dt1
[1] 22.8 49.6 77.9 67.6 91.2 48.9 124.6 54.6 85.8 62.8 63.3 174.7 32.3 22.7 99.9 123.2 4.8 149.0 66.0
[20] 73.9 37.4 22.4 69.5 87.3 66.9 87.2 81.5 109.1 47.4 22.8 92.4 60.9 77.5 91.3 91.9 78.2 39.4 107.5
[39] 57.9 65.5 76.0 47.2 145.5 95.9 106.0
2009 Dec 11
2
Regularized gamma function/ incomplete gamma function
Dear all,
I would be very grateful if you could help me with:
Given the regularized gamma function Reg=int_0^r (x^(k-1)e^(-x))dx/int_0^Inf (x^(k-1)e^(-x))dx ; 0<r<Inf (which is eventually the ratio of the
Incomplete gamma function by the gamma function), does anyone know of a package in R that would evaluate the derivative of the inverse of Reg with respect to k? I am aware that the
2011 Mar 16
0
generate bivariate or multivariate gamma distribution in R
Hi, there:
Is there any quick function to generate bivariate or multivariate gamma distribution?
Thanks.
Yulei
2005 Jul 21
1
output of variance estimate of random effect from a gamma frailty model using Coxph in R
Hi,
I have a question about the output for variance of random effect from a gamma
frailty model using coxph in R. Is it the vairance of frailties themselves or
variance of log frailties? Thanks.
Guanghui
2012 Dec 03
1
fitting a gamma frailty model (coxph)
Dear all,
I have a data set<http://yaap.it/paste/c11b9fdcfd68d02b#gIVtLrrme3MaiQd9hHy1zcTjRq7VsVQ8eAZ2fol1lUc=>with
6 clusters, each containing 48 (possibly censored, in which case
"event = 0") survival times. The "x" column contains a binary explanatory
variable. I try to describe that data with a gamma frailty model as follows:
library(survival)
mod <-