Displaying 20 results from an estimated 1271 matches for "jointes".
2012 Sep 20
3
(no subject)
>From my book on corpus linguistics with R:
# (10) Imagine you have two vectors a and b such that
a<-c("d", "d", "j", "f", "e", "g", "f", "f", "i", "g")
b<-c("a", "g", "d", "f", "g", "a", "f", "a",
2004 Oct 03
3
Making a 'joint distribution'?
Suppose I make two discrete variables --
> D <- data.frame(f1=sample(1:5,100,replace=T), f2=sample(1:5,100,replace=T))
I know I can do:
> table(D$f1, D$f2)
0 1 2 3 4
0 5 5 5 5 4
1 4 2 6 7 3
2 5 3 5 3 6
3 3 1 3 1 2
4 6 4 3 3 6
> table(D$f1)
0 1 2 3 4
24 22 22 10 22
> table(D$f2)
0 1 2 3 4
23 15 22 19 21
which is all great. But how do I produce the
2000 Oct 29
4
joint stereo - advantages / when?
Hello,
I've been postponing some of my encoding for when joint stereo gets
implemented. The reason I've been doing this, is that I am under the
impression this is the largest step in the quality/bitrate ratio that's
left. Now I'm wondering if I am correct in thinking this. lame's
documentation seems to imply it doesn't make much of a difference at
higher than 128kbps (I
2001 Jun 14
2
Vorbis and Joint Stereo.
Hi,
I've just read this on Vorbis Xtreme site:
"11. YOU SAY THAT OGG VORBIS IS PATENT-FREE, BUT I SAW A PATENT NAMED
'JOINT-STEREO' ON FRAUNHOFER'S PATENT LIST? SO OGG VORBIS ACTUALLY ISN'T
PATENT-FREE SINCE IT ALSO USES JOINT-STEREO?
No. You can't judge on a patent just by looking at its name - what's
'inside' is what matters. So if the name of the
2013 Mar 06
0
how to construct bivariate joint cumulative pdf from bivariate joint pdf
Hello,
I am using sm.density() to find the bivariate joint PDFof events:
For eg,
x<-cbind(rnorm(30),rnorm(30))
den<-sm.density(x)
Then I get the joint pdf from den$estimate in order to constructthe
joint cumulative PDF.
However, summing up all the values from den$estimateisnot equal to
1(have multipliedby the grid size).
Anyone could help?
Thanks.
mc
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2013 Apr 03
3
Generating a bivariate joint t distribution in R
Hi,
I conduct a panel data estimation and obtain estimators for two of the
coefficients beta1 and beta2. R tells me the mean and covariance of the
distribution of (beta1, beta2). Now I would like to find the distribution
of the quotient beta1/beta2, and one way to do it is to simulate via the
joint distribution (beta1, beta2), where both beta1 and beta2 follow t
distribution.
How could we
2009 Dec 02
2
Joint density kde2d works improperly?
Dear all,
Please, look at the following code:
attach(geyser)
f1 <- kde2d(duration, waiting, n = 5)
a <- 0
for (i in 1:5){
for (j in 1:5){
a <- a + f1$z[i,j]
}
}
As far as I understood from Help kde2d returns matrix elements of which are
values of joint probability mass function Pr(X=x,Y=y) therefore, sum of its
elements should sum to 1.
Which is not the case from my check.
Where is
2011 Jan 31
2
p value for joint probability
Dear all,
Given
rr<-data.frame(r1<-rnorm(1000,10,5),r2<-rnorm(1000,220,5))
How can I add a column (rr$p) for the joint probability of each r1 & r2 pair?
I know how to add the column.. I just dont know how to compute the p value for joint probabilities given the two samples.
//M
2013 Jan 25
2
joint probability distribution
Dear R family,
I want to calculate the joint probability (distribution) of two random continuous variables X and Y.
Could to please tell me how to do it?Thanks in advance..
elisa
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2007 Nov 26
2
2d Joint Density Plot
Hi all,
I'm fairly new to R, so I'm still trying to feel out what is available to
me. I would like to be able to plot joint density in a two dimensional plot
where density is indicated by color or darkness gradients, like a 2d color
coded topographic map. Ideally, the output would be something I could then
plot other points or lines on.
Currently, I'm calculating joint density with
2011 Jan 25
1
subsetting based on joint values of critera
Dear colleagues, I have a dataset that looks as below.
I would like to make a new dataset that excludes the cases which are joint conjunctions of particular state names and years, so Connecticut and 2010, Maryland and 2010 and Vermont and 2010.
I'm trying the following subset code:
newdata<- subset(bpa, (!State=="Connecticut" & year<"2010"))
It appears that
2009 Nov 11
1
p-value calculation on a joint distribution
Dear R users,
For a uni-variable distribution represented in a numerical vector,
we can obtain a distribution function using 'ecdf', and then calculate
corresponding p-values. But if I have a 2-column dataframe representing
a bi-variable joint distribution, given a pair of values, how can I get
the p-value? And how can I plot out the density of the joint distribution?
Best
2005 Apr 17
1
nls segmented model with unknown joint points
Hello,
I am interested in fitting a segmented model with unknown joint points
in nls and perhaps eventually in nlme. I can fit this model in sas (see
below, joint points to be estimated are a41 and a41), but am unsure how
to specify this in the nlm function. I would really appreciate any
suggestions or example code. Thanks a lot. -andy
proc nlin data=Stems.Trees;
params b41=-3 b42=1.5
2009 Dec 04
3
Combinations and joint probabilities
Dear R helpers
Suppose I have two sets of ranges (interest rates) as
Range 1 : (7 – 7.50, 7.50 – 8.50, 8.50 – 10.00) with respective probabilities 0.42, 0.22 and 0.36.
Range II : (11-12, 12-14, 14-21) with respective probabilities 0.14, 0.56 and 0.30 respectively.
My problem is to form the combinations of these ranges in a decreasing order of joint probabilities. It is assumed that
2005 Sep 22
4
how to keep very small or large number?
When I was computing some joint probabilities, I found
that R reported most of the results to to -Inf and
thus didn't record the value. I guess it is b/c the
joint log(probability) can be extremely small. Is
there a way in R to keep the values even if they are
small?
2009 May 11
1
Plot bivariate joint pdf
For a homework question.
I was wondering if rcmdr has a function to plot a graph of a bivariate
function of X and Y.
I have a function with joint pdf
fX,Y(x,y) = x+y for 0<x<1 , 0<y<1
I've tried
> x <- seq(0,1,.001)
> y <- seq(0,1,.001)
> r = x+y
> plot(r)
but it seems to just add them together say .2+.2 .3+.3 not other
possibilities like
.9 + .1
Thanks
2000 Dec 16
0
joint multichannel coding (long message)
I've got an idea for joint multichannel coding. Here is my idea:
My idea is a process for coding 2,3,4 or 5 combined channels, in a
compatible way for decoders unable to deal with combined channels.
part1: All channels to be coded are summed, each one effected by a
coefficient related to its sound power importance for the listener. The sum
of all channels is devided by the square root of the
2009 Feb 06
1
Joint test
Dear All,
I am estimating a Cox proportional hazard model, with several interactions
of the type a*z + a*y + a*x + b*z + b*y + b*x.
I need to know if the first three (the "a"s) are jointly significantly
different from the last three (the "b"s). I have tried several approaches,
but have been unsuccessful.
Here's the model, and the code I came up with, with the obvious
2003 Jun 13
2
formula (joint, conditional independence, etc.) - mosaicplots
Hi,
Can someone set me straight as to how to write formulas in R to indicate:
complete independence [A][B][C]
joint independence [AB][C]
conditional independence [AC][BC]
nway interaction [AB][AC][BC]
?
For example, if I have 4 factors:
hair colour, eye colour, age, sex
does
> mosaicplot( frequency ~ hair + eye + age + sex)
mean that the model fitted is of complete independence of
2008 Sep 15
1
How to plot contours for joint density of 2 independently distributed r.v.?
X and Y are independently distributed random variables.
I would like to study the contours of the joint density of these two
variables.
Any function to call?
Thank you very much!
--
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