Displaying 12 results from an estimated 12 matches for "c_2".
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2004 May 07
1
plotting planes and lines in wireframe()
...e relation.... Hmm...
Somewhat related, I would also like to plot a line in 3 d space...
Finally, if you are feeling really brave, I am interested in doing all
of this based on sums generating vectors (I know there is a linear
algebra term for this) -- ie generate the plane based on c_1*v_1 +
c_2*v_2 for c_1 and c_2 in reals.
Thanks again to all you helpful folks!
W
2011 Apr 15
1
How to generate a correlation matrix with restrictions on its eigenvalues
Dear All,
I would like to generate m positive real numbers c_i, I=1,...,m, such that
(1) c_1 + c_2 + ... + c_m=m,
(1) after being ordered into c_1 >= c_2 >= .... >=c_m>0, we have that c_m is of the same order of m^(-1/8), when m is sufficiently large.
Thanks,
-Chee
[[alternative HTML version deleted]]
2016 Sep 14
2
undef * 0
...that all bits of the
‘|undef|‘ could be 0, and optimize the ‘|and|‘ to 0. Likewise, it is
safe to assume that all the bits of the ‘|undef|‘ operand to the ‘|or|‘
could be set, allowing the ‘|or|‘ to be folded to -1."
As a result,
LHS = (undef & undef) | (undef & undef) = c_1 | c_2 where c_1 and
c_2 are constants and as a result,
And finally, LHS = c where c is a constant; not undef.
Please correct me if I am missing something.
Best Regards,
soham
On 9/13/2016 7:27 PM, Sanjoy Das wrote:
> Hi Soham,
>
> Soham Chakraborty wrote:
> > As a result, the t...
2007 Mar 08
2
sending a vector of characters as arguments for a function
Dear all,
It seems to be a recurrent problem to me and I am asking your help to
get over it once for all ...
My idea is :
I have variables C_1, C_2, C_3 ... that corresponds to vectors of size
n, and I would like to cbind them.
I get a vector of their names using : temp<- ls(pat="C")
And I like to find a way to use this vector temp as an argument to
cbind.
Unfortunately, my various trials failed, here are some samples of...
2011 Jan 03
0
Greetings. I have a question with mixed beta regression model in nlme (corrected version).
...*
Suppose that:*
*j in {1, ..., J}* *(level 1)*
*i in {1, ..., n_j}* *(level 2)*
*y_{ij} ~ Beta(mu_{ij} * phi_{ij}; (1 - mu_{ij}) * phi_{ij})
y_{ij} = mu_{ij} + w_{ij}
*
*with*
*logit(mu_{ij}) = Beta_{0i} + Beta_{1i} * x1_{ij} + b_2 * x2_{ij}
log(phi_{ij}) = Gamma_{0i} + Gamma_{1i} * z1_{ij} + c_2 * z2_{ij}
*
*Beta_{0i} = b_0 + u_{0i}
Beta_{1i} = b_1 + u_{1i}
Gamma_{0i} = c_0 + v_{0i}
Gamma_{1i} = c_1 + v_{1i}
*
*The vector* *(u_{0i}, u_{1i})'* *has normal distribution with mean*
*(0, 0)'* *and covariance matrix*
*sigma_{00} sigma_{01}
sigma_{10} sigma_{11}
*
*The vector* *(v_{0i},...
2009 Nov 09
2
Outputing multilple subsets
...hope to divide the original dataset into several subsets and output
these multilple datasets. But errors appeared in my loops. See example.
######
a<-c(1:10)
b<-c(rep(1,3),rep(2,3),rep(3,4))
c<-data.frame(a,b) #c is the example data
num<-c(unique(b))
# I hope to get the subsets c_1.csv,c_2.csv and c_3.csv
#Errors
for (i in num) {
c_num<-c[c$b==num,]
write.csv(c_num,file="c:/c_num.csv")
}
Warning messages:
1: In c$b == num :
longer object length is not a multiple of shorter object length
2: In c$b == num :
longer object length is not a multiple of shorter obje...
2016 Sep 13
2
undef * 0
Thanks for your answers.
Another example of unsound transformation on Boolean algebra.
According to the LLVM documentation
(http://llvm.org/docs/LangRef.html#undefined-values) it is unsafe to
consider ' a & undef = undef ' and ' a | undef = undef ' but 'undef xor
undef = undef' is safe.
Now, given an expression ((a & (~b)) | ((~a) & b)) where a and b are
2011 Jan 03
1
Greetings. I have a question with mixed beta regression model in nlme.
...The vector* *(v_{0i}, v_{1i})'* *has normal distribution with mean*
*(0, 0)'* *and covariance matrix*
*delta_{00} delta_{01}
delta_{10} delta_{11}
*
*The* *w_{ij}s are independents. Each* *w_{ij}* *has mean* *0* *and variance
* *W*.
*The unknown parameters are:*
*
b_0, b_1, b_2, c_0, c_1, c_2, sigma_{00}, sigma_{10},
sigma_{11}, delta_{00}, delta_{10}, **and* *delta_{11}*.
*The question is:
How can I use nlme package in R to fit this model?
If you want to know additional information, send me a mail, please.
In advance, thanks a lot for your help.
Kind regards,
Rodrigo.*
[[alternati...
2006 Apr 20
0
Major internal changes, TI DSP build change
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2006 Apr 19
2
Major internal changes, TI DSP build change
> You found it. The SHL32 (not SHR32) line fixes the problem. It must be
> doing a 16-bit shift, then extending the result (which is reasonable). As
> it happens, that it the same macro which gave us trouble last May
> (25th/26th), when the C55 build was more subtlely broken.
Yes, that's what I finally remembered. I think I've fixed all
occurrences (by adding EXTEND32)
2006 Jul 20
1
samba as pdc in Ubuntu dapper, fails on ps$ join?
Hola,
I've done everything as correct as I can see in smb.conf under fresh ubuntu 6.06 fully
updated install to have it run as a PDC on hostname florentine, domain DAVEYST.
There are no testparm errors.
I've added users with useradd and smbpasswd -a
I've added machines with useradd and smbpasswd -a -m
I can see the server in my network neighbourhood and access/browse folders on
2008 Jun 30
4
Rebuild of kernel 2.6.9-67.0.20.EL failure
Hello list.
I'm trying to rebuild the 2.6.9.67.0.20.EL kernel, but it fails even without
modifications.
How did I try it?
Created a (non-root) build environment (not a mock )
Installed the kernel.scr.rpm and did a
rpmbuild -ba --target=`uname -m` kernel-2.6.spec 2> prep-err.log | tee
prep-out.log
The build failed at the end:
Processing files: kernel-xenU-devel-2.6.9-67.0.20.EL
Checking