Displaying 20 results from an estimated 500 matches similar to: "truncated negative binomial using rnegbin"
2006 Oct 02
3
How do I list in YP? icecast2 ices0
ices.conf:
<Public>1</Public>
<!-- The name of you stream, not the name of the song! -->
<Name>Poohba's Urban Sounds</Name>
<!-- Genre of your stream, be it rock or pop or whatever -->
<Genre>RnB</Genre>
icecast.xml
<directory>
<yp-url-timeout>15</yp-url-timeout>
2004 Feb 10
1
generate random sample from ZINB
I want to generate 1,000 random samples of sample size=1,000 from ZINB.
I know there is a rnegbin() to generate random samples from NB, and I know
I can use
the following process:
do i=1 to 1000
n=0
do i=1 to 1000
if runi(1)>0.1 then x(i) = 0; else
x(i)=rnegbin();
n=n+1;
if n>1000 then stop;
end;
output;
end;
Anybody can help me out with the R code?
Thanks very much ahead of time.
2009 Jul 20
1
tabulate can accept NA values?
tabulate has
.C("R_tabulate", as.integer(bin), as.integer(length(bin)),
as.integer(nbins), ans = integer(nbins), PACKAGE="base")$ans
The implementation of R_tabulate has
if(x[i] != R_NaInt && x[i] > 0 && x[i] <= *nbin)
and so copes with (silently drops) NA. Perhaps the .C could have
NAOK=TRUE? This is useful in apply'ing tabulate to
2011 May 04
1
hurdle, simulated power
Hi all--
We are planning an intervention study for adolescent alcohol use, and I
am planning to use simulations based on a hurdle model (using the
hurdle() function in package pscl) for sample size estimation.
The simulation code and power code are below -- note that at the moment
the "power" code is just returning the coefficients, as something isn't
working quite right.
The
2004 Aug 06
1
Why doesn't yp.icecast.org show my stream?
Jack Moffitt <jack@xiph.org> writes:
> Now I see the problem. This will not cause anything to show up. You
> have no sources.
Eh?
-> sources
Listing sources
[Id: 509] [Sock: 14] [Time of connect: 18/Feb/2002:20:55:14] [IP:
205.147.43.110] [State: 1] [Type: pulling relay] [Proto: x-audiocast]
[Clients: 2] [Dumpfile/fd: (null)/-1] [Priority: 0] [Song Title: ] [Song URL:
2006 Jul 14
2
Negative Binomial: Simulation
Hi R-Users!
I fitted a negative binomial distribution to my count data using the
function glm.nb() and obtained the calculated parameters
theta (dispersion) and mu.
I would like to simulate values from this negative binomial distribution.
Looking at the function rnbinom() I was looking at the relationship
between the two possible parametrizations of the negative binomial and found
that for this
2009 Feb 23
1
trade-off between speed and storage in matrix multiplications
Dear R-users,
I coded two equivalent ways to perform (in a simplified version)
some matrix multiplications I would like to use in a more general
framework.
In the first case I used Kronecker product and vectorization of a
certain matrix. This approach takes less time, but, as you may guess, I
run out of memory when dimensions are large.
In the second approach, I profited of sparseness and
2006 Oct 02
2
How do I list in YP? icecast2 ices0
I thought the YP code was going to be fixed to use less resources so it
could be used with other stream formats. It seems to be taking a long
time.
As it is now, Icecast2 is not a good solution for those wanting to be on
a popular directory. I am forced to recommend using Shoutcast to my
clients so they can get onto a popular directory. I would prefer to
recommend Icecast2.
Ross Levis.
2011 Nov 17
1
How to Fit Inflated Negative Binomial
Dear All,
I am trying to fit some data both as a negative binomial and a zero
inflated binomial.
For the first case, I have no particular problems, see the small snippet
below
library(MASS) #a basic R library
set.seed(123) #to have reproducible results
x4 <- rnegbin(500, mu = 5, theta = 4)
#Now fit and check that we get the right parameters
fd <- fitdistr(x4, "Negative
2006 Oct 03
3
How do I list in YP? icecast2 ices0
I can understand wanting to boost the adoption of Xiph codecs, but I think restricting the directory to vorbis streams only will not help this endeavour. I can imagine it will just piss a lot of people, including myself, and give Xiph a bad name.
I get very few listeners of my AAC+ stream now since this occured. The restriction is not an insentive to switch to Ogg Vorbis at all. The incentive
2012 Jun 14
2
density plot on a log scale
I'm working with a large dataset - large enough that when I do a scatter plot
the points all blur together, so I want to plot their density by color - a
heat map or something like that. I've used smoothScatter for tasks like
this, but the problem is that my current dataset really only looks good on a
log-log scale. When I do the following command
smoothScatter(
data,
2005 Mar 03
1
Negative binomial regression for count data
Dear list,
I would like to fit a negative binomial regression model as described in "Byers AL, Allore H, Gill TM, Peduzzi PN., Application of negative binomial modeling for discrete outcomes: a case study in aging research. J Clin Epidemiol. 2003 Jun;56(6):559-64" to my data in which the response is count data. There are also 10 predictors that are count data, and I have also 3
2006 Oct 03
1
How do I list in YP? icecast2 ices0
Hi Rob
The stream format has nothing to do with your audio files. I probably
have 70% MP3's and 30% Ogg Vorbis files, and 1 or 2 WAV files for
jingles on my hard drive. I only encode new CD's to Ogg Vorbis.
But my station is streaming in AAC+ format, and I have also streamed in
Ogg Vorbis format simultaneously. There is no way I would bother
streaming in MP3 format. It's 15+
2009 Apr 22
1
reversing xlim, ylim in smoothScatter
Hello,
I have found that in smoothScatter it is not possible to reverse the axes plotted (R version 2.9.0) . It appears that this arises from the hard coding of xlim and ylim in smoothscatter.R in the lines :
x <- x[ xlim[1] <= x[,1] & x[,1] <=xlim[2], ] (line number 25)
and
x <- x[ ylim[1] <= x[,2] & x[,2] <= ylim[2], ] (line number 31)
This results in a x
2011 Jun 10
1
smoothScatter function question and adding a legend
Hello,
I have a few questions, regarding the smoothScatter function.
I have a scatter plot with more than 500,000 data points for
two samples. So, I am wanting to display the density in colors
to convince people that my good correlation coefficient is not
due to an "influential point effect" and plus, I also want to make
my scatter plot look pretty. Anyway ...
I have been able to
2000 Jan 12
3
functions for flat file import/export + utilities
Dear R-Developers,
please find attached a set of drafted functions for flat file import and
export, partially extending existing functions, partially completely written
as new code.
I thought you might be interested in those functions and the accompanying
utilities for padding and trimming.
Main features are
- supports several formats, i.e. fixed width and CSV (with one exception)
- supports
2010 Apr 13
1
Binning Question
Hi,
I'm trying to setup some complicated binning with statistics and could
use a little help.
I've found the bin2 function from the ash package, but it doesn't do
everything I need. My intention is to copy some of their code and then
modify as needed.
I have a vector of two columns:
head(data)
r1 r2
[1,] 0.03516559 0.03102128
[2,] 0.02162539 0.14847034
2011 Jun 03
2
Arules: R Crashes when running eclat with tidLists=TRUE
Hello,
I'm using the eclat function of the arules package (1.0-6) for the
identification of frequent itemsets. I need the tidLists, but if I set
in the function tidLists=TRUE R crashes (Windows XP Professional SP3,
32 bit, R version 2.12.1 (2010-12-16), reproducible on two different
computers) with two different error messages or non at all. Minimum
examples are:
library(arules)
2003 Sep 24
3
density() integrates to 1?
Visual inspection of the plot of a density() function vs a normal with
the same mean and variance suggests the area under the density curve is
bigger than under the normal curve. The two curves are very close over
most of the domain. Assuming the normal curve does integrate to 1, this
implies the area under density() is > 1.
Is there any assurance that the density kernel smoother produces
2005 Jan 25
1
Zipf random number generation
Hi,
Is there a Zipf-like distribution RNG in R?
Thanks,
Weiguang