Displaying 2 results from an estimated 2 matches for "posdef".
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2016 Apr 13
0
could not find function in mempry inside foreach loop
I'm trying to use foreach function to do multicore computing in R.
Error in FUN(train_adjmt, iter = missedmat[i, 1], iter2 = missedmat[i, :
task 1 failed - "?????'predictMatrix'"
then I call function A in the console. The problem is I'm calling a
function Posdef inside B that is defined in another script file which I
source. I had to put predictMatrix in the list of export argument of foreach
: .export=c("predictMatrix"). However I get the following error:
Warning message:
In e$fun(obj, substitute(ex), parent.frame(), e$data) :
already exporti...
2012 Apr 23
0
Solve an ordinary or generalized eigenvalue problem in R
...There is a matrix form (I think A V = B V E is usual, though I tend to work on them
one at a time in my mind.)
The real trouble is that A and B can have different forms e.g., real, complex, Hermitian
and B may or may not be positive definite. I published a code for complex Hermitian case
with posdef (but complex) metric B in 1974 in Computer Physics Communications. Around the
same time there was Linda Kaufman's LZ code (TOMS / ACM 496) and various QZ codes (van
Loan and Smith), see TOMS / ACM 535. There are descendants of these in LAPACK. And I
suspect there are some sparse variants too...