Displaying 3 results from an estimated 3 matches for "diagonalisation".
2001 Sep 06
1
svd and eigen
Hello List,
i need help for eigen and svd functions. I have a non-symmetric
square matrix. These matrix is not positive (some eigenvalues are
negative). I want to diagonalise these matrix. So, I use svd and
eigen and i compare the results. eigen give me the "good" eigenvalues
(positive and negative). I compare with another software and the
results are the same. BUT, when i use svd,
2001 Nov 05
1
Problem to transfer Splus functions
Hello
I would like to transfer some Splus functions in R.
But I have a problem first about this assignation in Splus :
xnom <- deparse(substitute(x))
I am a bad programmer : I don't understand the R help
How to modify these functions ?
Thank you very much for your help
Here are the four functions and a data test
2001 Oct 18
0
General Matrix Inverse
...ralised Inverse:
The Moore-Penrose Generalisied Inverse is probably better defined as a
pseudo-Inverse that arises in solving least squares problems.
Another well known pseudo-Inverse is the so-called Drazin pseudo-Inverse.
If memory serves (and it's been 10-12 years!) it can be obtained via a
diagonalisation.
Anyway, I dare say Prof. Ripley (among others) probably has "all the
low-down" on this stuff.
Gerard
Torsten Hothorn...