Displaying 6 results from an estimated 6 matches for "qaf".
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2018 Jan 22
2
Inconsistent rank in qr()
...g pseudo code ?
d=abs(diag(qr))
rank=sum(d >= d[1]*tol)
Here, we rely on the fact column pivoting is activated in the called lapack routine (dgeqp3)
and diagonal term in qr matrix are put in decreasing order (according to their absolute values).
Serguei.
How to reproduce:
a=diag(2)
a[2,2]=0
qaf=qr(a, LAPACK=FALSE)
qaf$rank # shows 1. OK it's the true rank value
qat=qr(a, LAPACK=TRUE)
qat$rank #shows 2. Bad, it's not the expected value.
2018 Jan 22
3
Inconsistent rank in qr()
...the fact column pivoting is activated in the called lapack routine (dgeqp3)
>> and diagonal term in qr matrix are put in decreasing order (according to their absolute values).
>>
>> Serguei.
>>
>> How to reproduce:
>>
>> a=diag(2)
>> a[2,2]=0
>> qaf=qr(a, LAPACK=FALSE)
>> qaf$rank # shows 1. OK it's the true rank value
>> qat=qr(a, LAPACK=TRUE)
>> qat$rank #shows 2. Bad, it's not the expected value.
>>
>> ______________________________________________
>> R-devel at r-project.org mailing list
>>...
2018 Jan 23
1
Inconsistent rank in qr()
...rix are put in decreasing order (according to their absolute values).
> >>>
> >>> Serguei.
> >>>
> >>> How to reproduce:
> >>>
> >>> a=diag(2)
> >>> a[2,2]=0
> >>> qaf=qr(a, LAPACK=FALSE)
> >>> qaf$rank # shows 1. OK it's the true rank value
> >>> qat=qr(a, LAPACK=TRUE)
> >>> qat$rank #shows 2. Bad, it's not the expected value.
> >>>
>
> > --
> > Serguei Sokol
>...
2018 Jan 22
0
Inconsistent rank in qr()
...tol)
>
> Here, we rely on the fact column pivoting is activated in the called lapack routine (dgeqp3)
> and diagonal term in qr matrix are put in decreasing order (according to their absolute values).
>
> Serguei.
>
> How to reproduce:
>
> a=diag(2)
> a[2,2]=0
> qaf=qr(a, LAPACK=FALSE)
> qaf$rank # shows 1. OK it's the true rank value
> qat=qr(a, LAPACK=TRUE)
> qat$rank #shows 2. Bad, it's not the expected value.
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailm...
2018 Jan 23
0
Inconsistent rank in qr()
...>>> and diagonal term in qr matrix are put in decreasing order (according to their absolute values).
>>>
>>> Serguei.
>>>
>>> How to reproduce:
>>>
>>> a=diag(2)
>>> a[2,2]=0
>>> qaf=qr(a, LAPACK=FALSE)
>>> qaf$rank # shows 1. OK it's the true rank value
>>> qat=qr(a, LAPACK=TRUE)
>>> qat$rank #shows 2. Bad, it's not the expected value.
>>>
> --
> Serguei Sokol
> Ingenieur de recherche INRA...
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