Displaying 5 results from an estimated 5 matches for "ssx".
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2002 Nov 15
5
confidence interval in "predict.lm"
...32.96429 30.61253 35.31604
$se.fit
[1] 0.9148715
$df
[1] 5
$residual.scale
[1] 2.348252
The book gives the confidence interval as 26.5 <= y <= 39.5. The book
defines the confidence interval calculation thus:
yp - E <= y <= yp + E
Where
E = tc*sC *sqrt(1 + 1/n + (x-xBar)^2/SSx)
yp is the predicted value from the regression line
tc is the value from Student's t distribution for a confidence
level, c, using n-2 degrees of freedom,
sC is the standard error of estimate
SSx is Sum(x^2)-[Sum(x)]^2/n
n is the number of data pairs.
So that even though the...
2011 Aug 01
3
formula used by R to compute the t-values in a linear regression
Hello,
I was wondering if someone knows the formula used by the function lm to compute the t-values.
I am trying to implement a linear regression myself. Assuming that I have K variables, and N observations, the formula I am using is:
For the k-th variable, t-value= b_k/sigma_k
With b_k is the coefficient for the k-th variable, and sigma_k =(t(x) x )^(-1) _kk is its standard deviation.
2002 Oct 18
7
RAM usage
Hi,
I'm having problems while working with large data sets with R 1.5.1 in
windows 2000. Given a integer matrix size of 30 columns and 15000 rows
my function should return a boolean matrix size of about 5000 rows and
15000 columns.
First of all I tried to run this function on computer with 256 MB of
RAM. I increased memory limit of R with memory.limit() up to 512 MB. I
was inspecting
2003 Dec 27
1
Faked samba packages / rootkit?
...9
> 394 ./asmb 82.39
> 395 cd /tmp/rk
> 396 cd w00t/
> 397 ./samba -b 0 -v 213.81.174.155
> 398 cat woot.log
> 399 cd ..
> 400 ls
> 401 cd w00t/
> 402 ./asmb 213.81
> 403 cd /var/tmp/.nlp
> 404 cd selena/
> 405 ls
> 406 ./ssx
> 407 cd /tmp
> 408 cd rk
> 409 cd w00t/
> 410 ./asmb 210
> 411 ./asmb 210.146
> 412 ./asmb 210.192
> 413 ls
> 414 ./samba -b 0 -v 128.210.147.242
> 415 ./samba -b 0 -v 128.210.147.241
> 416 ./samba -b 0 -v 128.210.147.243
> 417 ./sa...
2001 Nov 14
7
Multichannel files
Hi,
As I´ve understood things, the Ogg Vorbis format supports more that two
channels (stereo). Is there any tools to encode x sourcefiles into one .ogg
file?
I am a musican and am thrilled with the ide of makeing music in surround
(or in more than stereo).
This leads to my next question: is there (developing) any decoders for
multichannel oggs to, let us say, 4.1 or 5.1 surround? Wouldn´t it