Displaying 20 results from an estimated 31 matches for "pi2".
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pi
2000 May 10
4
Q: Problems with eigen() vs. svd()
...>> Pi<-h %*% c
>> eigen(Pi)$values
>[1] 1.56216542 0.07147773
These could have been complex, of course, but as it happens they are real.
>> svd(Pi)$d
>[1] 2.85537780 0.03910517
These must be real and they are not the eigenvalues of Pi.
>
>And now:
>> Pi2<-Pi %*% t(Pi) #that means Pi2 is symmetric and the eigenvalues
should be the
> # squared eigenvalues of Pi
Not quite. It means Pi2 is symmetric all right, but it implies no simple
relationship between the eigenvalues of Pi and Pi2.
What you can say is the the *singular values* of Pi2...
2013 Apr 09
0
[R-SIG-Finance] EM algorithm with R manually implemented?
...odd values especially for sigma, that the
> likelihood of some observations is zero and therefore the log is -Inf.
>
> Where is my mistake?
>
> My code:
>
> # EM algorithm manually
> # dat is the data
>
>
> # initial values
> pi1<-0.5
> pi2<-0.5
> mu1<--0.01
> mu2<-0.01
> sigma1<-0.01
> sigma2<-0.02
> loglik[1]<-0
> loglik[2]<-sum(pi1*(log(pi1)+
> log(dnorm(dat,mu1,sigma1))))+sum(pi2*(log(pi2)+log(dnorm(dat,mu2,sigma2))))
>
>
>
> tau1<-0
> tau2...
2015 Jun 22
3
CentOS on ARM7 (eg Raspberry Pi)
I saw in the anouncement for the upcoming Boston, MA conference that there
will be demos of CentOS on an ARM7 system. I am wondering: does this mean that
there is somewhere out there a build of some version of CentOS that might run
on a Raspberry Pi (which has an ARM7 processor)?
--
Robert Heller -- 978-544-6933
Deepwoods Software -- Custom Software Services
2009 Mar 27
1
General help for a function I'm attempting to write
...'JostD' for all combinations
of columns, perhaps returning a matrix of distances. Thanks for any help or
suggestions.
Cheers
Colin
Function:
JostD <- function(DF, X, Y) {
Ni1 <- DF[,X]
Ni2 <- DF[,Y]
N1 <- sum(Ni1)
N2 <- sum(Ni2)
pi1 <-Ni1/N1
pi2 <-Ni2/N2
pisqr <- ((pi1+pi2)/2)^2
H1 <- 1 - sum(pi1^2)
H2 <- 1 - sum(pi2^2)
Ha <- 0.5*(H1+H2)
Da <- 1/(1-Ha)
Dg <- 1/sum(pisqr)
Db <- Dg/Da
D <- -2*((1/Db) - 1)
D
}
Sample data:
e<-c(0,0,0,4,27)
r<-c(0,1,0,7,16...
2002 Oct 17
0
Polar plot, circular plot (angular data)
...= FALSE, method = 1,
rlabel.axis = 0, dir = 8, rlimits = NULL, grid.circle.pos = NULL,
grid.lwd = 1, grid.col = "black", points.pch = 20, points.cex = 1,
lp.col = "black", lines.lwd = 1, lines.lty = 1, polygon.col = NA,
polygon.bottom = TRUE, overlay = NULL, pi2.lab = TRUE, text.lab = NULL,
num.lab = NULL, rlabel.method = 1, rlabel.pos = 3, rlabel.cex = 1,
rlabel.col = "black", tlabel.offset = 0.1, tlabel.cex = 1.5,
tlabel.col = "black", main = NULL, sub = NULL)
{
# r: (vector of) radial data.
# theta: (vector of) angu...
2020 Sep 22
3
Raspberry Pi Version of Samba?
Is there a version of Samba that will run on a Raspberry Pi 2? If so,
can somebody point me to it? If not can, Samba be compiled on a
Raspberry Pi 2? Thanks for your help.
--
Paul (ganci at nurdog.com)
Cell: (303)257-5208
2015 Feb 12
4
[LLVMdev] Building clang on Raspberry Pi2
The raspberry Pi2 is an armv7a chip (Cortex-A7), the first stage builds
fine with the native g++ (if not a little slowly at 10+ hours), but it
crashes at some point with this command line:
Program arguments:
/home/ben/development/llvm/3.6.0/rc2/Phase2/Release/llvmCore-3.6.0-rc2.install/bin/clang
-cc1 -triple ar...
2015 Jun 23
0
CentOS on ARM7 (eg Raspberry Pi)
...n the anouncement for the upcoming Boston, MA conference that there
> will be demos of CentOS on an ARM7 system. I am wondering: does this mean that
> there is somewhere out there a build of some version of CentOS that might run
> on a Raspberry Pi (which has an ARM7 processor)?
>
The Pi2 is armv7 .. the original pi is armv6.
There is a pi2 image here:
http://seven.centos.org/2015/06/another-proof-of-concept-armv7hl-release-this-one-for-the-raspberry-pi2/
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2020 Sep 22
2
Raspberry Pi Version of Samba?
...:
> > Is there a version of Samba that will run on a Raspberry Pi 2? If so,
> > can somebody point me to it? If not can, Samba be compiled on a
> > Raspberry Pi 2? Thanks for your help.
> >
> I know of a version of Samba for the later versions of the Rpi, but not
> the Pi2. You should be able to compile Samba on your Pi2, I used to
> compile Samba on an Rpi1 (case of run 'make' and then go to bed and it
> would have finished compiling in the morning).
>
> If you want to build packages, then it might be worth having a look
> here: http://apt.van...
2020 Sep 22
0
Raspberry Pi Version of Samba?
...ul R. Ganci via samba wrote:
> Is there a version of Samba that will run on a Raspberry Pi 2? If so,
> can somebody point me to it? If not can, Samba be compiled on a
> Raspberry Pi 2? Thanks for your help.
>
I know of a version of Samba for the later versions of the Rpi, but not
the Pi2. You should be able to compile Samba on your Pi2, I used to
compile Samba on an Rpi1 (case of run 'make' and then go to bed and it
would have finished compiling in the morning).
If you want to build packages, then it might be worth having a look
here: http://apt.van-belle.nl/
Louis bui...
2020 Sep 22
0
Raspberry Pi Version of Samba?
...a version of Samba that will run on a Raspberry Pi 2? If so,
>> > can somebody point me to it? If not can, Samba be compiled on a
>> > Raspberry Pi 2? Thanks for your help.
>> >
>> I know of a version of Samba for the later versions of the Rpi, but not
>> the Pi2. You should be able to compile Samba on your Pi2, I used to
>> compile Samba on an Rpi1 (case of run 'make' and then go to bed and it
>> would have finished compiling in the morning).
>> If you want to build packages, then it might be worth having a look
>> here: ht...
2008 Apr 09
0
Endogenous variables in ordinal logistic (or probit) regression
...variables y1* and y2* that are determined by
y1* = b0 + b1 * y2 + b2 * X1 + b3 * X2 + e1
and
y2* = c0 + c1 * y1 + c2 * X1 + c3 * X2 + e2
y1* and y2* are not observed, we see only the categorical outputs Y1
and Y2 that correspond to
Y1 = 0 if y1* < pi1
Y1 = 1 if pi1 <= y1* < pi2
Y1 = 2 if pi2 <= y1* < pi3
Y1 = 3 if pi3 <= y1*
and similarly for Y2.
Since e1 is "going into" y1*, and y1* "goes into" y2*, then there is
the good chance that the error term e1 is correlated with y2*.
Running
polr (Y1 ~ Y2 + X1 +X2)
in isolation mig...
2015 Feb 17
2
ps aux | grep smbd
Hello Rowland
Am 17.02.2015 um 06:14 schrieb Jed Evnull:
> I recently compiled samba-3.2.15 for a Raspberry Pi V2 and while it
> seems to be working fine, when I ps aux | grep smbd I'm shown two or
> three successively numbered smbd jobs. The smbd log isn't showing
> anything weird, what's up with this?
Everything is fine. smbd create child processes, like when users or
2015 Oct 26
1
I/O errors with usbhid-ups and Tripp Lite SMART1500LCDT
...with has a very similar
chipset to the Z800 (Intel 5500 vs 5520, which lspci considers to be
effectively the same), I wouldn't rule this out. So we've got a couple
more samples with different chipsets and this model of UPS, I'll test it
against my Haswell i3 laptop, and my Raspberry Pi2 later this week to
see if they behave any differently against the current master branch.
2015 Oct 14
5
Icecast on Raspberry Pi
Is it possible to make Icecast run, for serving no more than 16 listeners, on Raspberry Pi? I simply want to dip my toe into the Linux universe, and this would be a fine excuse for me to try RP if it's doable. Thanks.
Jeremiah Rogers
Cell: 704-996-5334
Email: jeremiahzrogers at gmail.com
Social Networking: /jzrogers
2015 May 27
0
Asterisk 11 on Raspbian2. ReceiveFAX/SendFAX fails
...BUG[4133][C-00000020] res_fax_spandsp.c: FAX session
'5' entering phase E
[May 27 23:18:46] DEBUG[4133][C-00000020] res_fax_spandsp.c: FAX session
'5' completed with result: FAILED (Unexpected message received)
My questions are:
1. Do you have successfully used ReceiveFAX app on a
Pi2/Raspbian/Jessie/Asterisk 11 setup ?
2. How can I debug this ?
Regards
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2015 May 14
1
[CentOS-announce] CentOS-7 disk images for AArch64 Platforms
On 5/14/2015 1:39 PM, Always Learning wrote:
> Does this mean it may be possible to run basic version of C5, C6 and C7
> on Arm64* CPU systems ? Presumably this will include the Raspberry Pi ?
is the rasberry pi ARMv8 (arm64) ? I thought it was v7 (32bit only)
--
john r pierce, recycling bits in santa cruz
2015 May 14
0
[CentOS-announce] CentOS-7 disk images for AArch64 Platforms
...(32bit only)
>
You are correct, the Pi is not armv8.
This is for larger devices ... although, there are now a some armv8
embedded devices too.
We SHOULD also have an armv7hl branch at some point too (we have just
really started working on that) ... and I think that will run on the
raspberry pi2 when done (though not the original).
We are trying for large data center devices not cell phones :)
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2015 Feb 17
0
ps aux | grep smbd
...baxp.org/fileadmin/user_upload/SambaXP2014-DATA/thu/track1/Kai_Blin-Samba-ScalingSambaDowntoMicroServers.pdf
>
>
>
> Regards,
> Marc
Well, I can see what you mean, but why bother, a raspberry pi will
function quite capably as a home DC (never mind as just a fileserver)
and now the pi2 is out with quad core and more memory.
I cannot understand why anybody would recommend using anything that went
EOL nearly 5 years ago, just think of all the security releases that
there have been since then, never mind the bug fixes!
Rowland
2008 Apr 24
0
logit newbie question...
...753
No 288 347
Desire is my explanatory and Drugs Using is my response...
How can I specify the null model? Namely
logit(pi) = n
where mle should give n to be logit((219+288)/(753+347))
Also, if I want a one factor model
logit(pi1) = n
logit(pi2) = n + alpha
where mle should give me n to be logit(219 / 972) and alpha be
logit(288/635) - logit(219/972)
Thanks!
--
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