Displaying 20 results from an estimated 200 matches similar to: "Zeta and Zipf distribution"
2012 Mar 15
2
Integrate inside function
Dear R users,
first I take this opportunity to greet all the R community for your
continuous efforts.
I wrote a function to calculate the pdf and cdf of a custom distribution
(mixed gamma model).
The function is the following:
pmixedgamma3 <- function(y, shape1, rate1, shape2, rate2, prev)
{
density.function<-function(x)
{
shape1=shape1
rate1=rate1
shape2=shape2
2007 Jul 25
1
qda(MASS) function error
Dear R user,
I'm using qda (quadratic discriminant analysis) function (package
MASS) to classify 58 explanatory variables (numeric type with different
ranges) using a grouping variable (factor 2 levels "0" "1"). I'm using
the qda method for class 'data.frame' (in this way I don't need to
specify a formula).
Using the function:
2010 Oct 11
1
plotting Zipf and Zipf-Mandelbrot curves in R
Using R, I plotted a log-log plot of the frequencies in the Brown Corpus
using
plot(sort(file.tfl$f, decreasing=TRUE), xlab="rank", ylab="frequency",
log="x,y")
However, I would also like to add lines showing the curves for a Zipfian
distribution and for Zipf-Mandelbrot.
I have seen these in many articles that used R in creating graphs.
Thank you!
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2008 Dec 27
1
Zipf fitting using R
Dear R-users,
I am new to R and would like to use it for fitting the zipf distribution to
some numeric data that I have. Here's the snippet that I use:
library(VGAM)
X <- read.table(file("~\\mydata.txt", encoding="latin1"))
w <- as.vector(t((X[2])))
w <- w/sum(w)
y <- (1:length(w))
fit = vglm (y ~ 1, zipf, tra=TRUE, weight=w)
zipf(N=NULL,
2005 Jan 25
1
Zipf random number generation
Hi,
Is there a Zipf-like distribution RNG in R?
Thanks,
Weiguang
2008 Aug 05
4
Buggy bios, boot of dos image hangs with syslinux, but not with isolinux
Hi
We have a couple of FSC Computers here which seem to have a very strange
bios. I am trying to boot a MS-DOS disk to flash an Scsi Raid
controller.
Since the computer doesn't have a floppy anymore I tried syslinux from
an usb stick. The menu loads fine but I cannot boot disc images with
memdisk on this computer. It works fine on others, of course.
But now comes the weird part, if I use the
2011 Feb 04
2
vegan and sweave using xtable
Dear all,
Using:
library(vegan)
data(BCI)
mod <- radfit(BCI[1,])
mod
RAD models, family poisson
No. of species 93, total abundance 448
par1 par2 par3 Deviance AIC BIC
Null 39.5261 315.4362 315.4362
Preemption 0.042797 21.8939 299.8041 302.3367
Lognormal 1.0687 1.0186 25.1528 305.0629 310.1281
2009 Nov 26
1
different fits for geese and geeglm in geepack?
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2012 Apr 23
2
zipfR help
Hi,
I have a question on generating random variables based on zipf-mandelbrot
distribution.
So when I execute the following lines:
ZM = lnre ("zm", alpha = 2/3, B=0.1)
zmsample = rlnre (ZM, n =100)
zmsample
It generates 100 random values based on a zipf-mandelbrot distribution as
below. But how do I make sure the generated random number is within the
range of 1 - 6000 only? Can I
2009 Aug 03
2
fitting a truncated power law
Dear all,
How can I fit a truncated power law to a vector? I can't find a function to do that. If the function provides an AIC, even better.
John
2002 Sep 26
2
[LLVMdev] question about GetElementPtr Instruction
You are correct, ubyte 2 simply means 3rd element of the structure. This
quantity is always constant (it specifies the field number), so we could
have used any signed or unsigned integer type for it instead of ubyte.
UByte means we are limited to at most 256 structure fields but it also makes
the bytecode representation more compact. (To remove this restriction, we
may migrate to UInt in the
2012 Mar 31
2
A introductory question about Zips law (Newbie to statistics)
Hi everyone.
Newbie to statistics.
I have 40 matrices of ~400 values. how may I determine whether the
distribution follows zips law?
response <-sample (1:20,400*4, replace= TRUE)
Thank you vry much.
--
View this message in context: http://r.789695.n4.nabble.com/A-introductory-question-about-Zips-law-Newbie-to-statistics-tp4521190p4521190.html
Sent from the R help mailing list archive at
2012 Oct 02
1
count data as independent variable in logistinc regression
Dear R users,
I would like to employ count data as covariates while fitting a
logistic regression model. My question is:
do I violate any assumption of the logistic (and, more in general, of
the generalized linear) models by employing count, non-negative
integer variables as independent variables?
I found a lot of references in the literature regarding hot to use
count data as outcome,
2004 Nov 21
1
Analysis of pre-calculated frequency distribution?
Sorry for the dumb question, but I cant work out how to do this.
Quick version,
How can I re-bin a given frequency distribution using new breaks without
reference to the original data? Given distribution has integer valued
bins.
Long version,
I am loading a frequency table into R from a file. The original data is
very large, and it is a very simple process to get a frequency
distribution
2016 Sep 05
1
389 Directory Server
Hi all,
I would like install 389 Directory Server on a Centos 6.8 server.
I followed the instructions reported in :
https://wiki.centos.org/HowTos/DirectoryServerSetup?highlight=%28directory%29%7C%28server%29
and installed with yum the following packages :
389-ds-base-1.2.11.15-75.el6_8.x86_64
389-ds-console-1.2.6-1.el6.noarch
389-ds-base-libs-1.2.11.15-75.el6_8.x86_64
2007 Nov 08
1
Booting of bcdw from isolinux does not work anymore with 3.52 but works with 3.51
Hi
I am having problems loading bcdw (http://bootcd.narod.ru) from the
isolinux bootloader.
I use this to load the acronis programs.
It worked fine up till version 3.51 but does not work anymore with 3.52.
Here is the code to load the second bootmanager
label l
kernel /bcdw/bcdwboot.bin
Any insights to what might be wrong here?
With 3.52 I get
Error! Cannot load
2010 Apr 01
1
amacrox ap1000 problems
Ok guys I get this errors:
Network UPS Tools ? UPS driver controller 2.4.1
Network UPS Tools ? Generic HID driver 0.34 (2.4.1)
USB communication driver 0.31
No matching HID UPS found
my ups.conf is:
[ap1000]
driver = usbhid-ups
port = auto
I?ve also tried to set a specific usb port and change driver.
My ups is a AMACROX 1000
http://www.amacrox.com//english/01_product/02_01detail.aspx?pdid=46
2002 Sep 25
3
[LLVMdev] question about GetElementPtr Instruction
I have a question about GetElementPtr.
Suppose I have an GetElementPtr Instruction GI:
%reg = getelementptr %ST* %s, uint 1, ubyte 2, ubyte 1, uint
5, uint 13
I want to check if this is the reference of a component of a
structure, how can I do that? Should I check which operand of
this instruction is 'ubyte' type? How can I do that in code?
should I use
ubyte *a =
2009 Jul 04
0
nv50/gallium: fix the zeta formats
A little patch that makes the nv50 mesa driver use the
correct GPU values for the matching depth formats.
There doesn't seem to be Z16, but I added Z32_FLOAT to
show the tile_flags the various formats need in the page
tables.
There'd also be Z32_FLOAT_S8_UNORM (0x19, tile flags 0xe000),
but that's not yet defined in the pipe formats header,
and I actually don't know if it's
2010 Jul 22
1
, how to express bar(zeta) in main title in boxplot
Hi everyone, I am plotting a boxplot with main title as main =
bquote(paste(.(ts.ind[s]), ": ", bar(zeta), " Boxplot from 2001 to 2009", sep = "")) but it doesn't work. The program said they cannot find the function "bar". Does anyone know how to do it correctly? Thanks.
tin
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