Beefy Boxes and Bandwidth Generously Provided by pair Networks
Keep It Simple, Stupid
 
PerlMonks  

Re: Inversion on a non square matrix using PDL (or similar?)

by gjb (Vicar)
on Jul 28, 2005 at 16:56 UTC ( #479043=note: print w/ replies, xml ) Need Help??


in reply to Inversion on a non square matrix using PDL (or similar?)

You're looking for the Moore-Penrose pseudoinverse. It is defined on MathWorld and is easy to implement for a matrix A as (A^t A)^{-1} A^t where A^t is A transposed, A^t A is a square matrix, (A^t A)^{-1} being its inverse (if it exists).

Hope this helps, -gjb-


Comment on Re: Inversion on a non square matrix using PDL (or similar?)
Select or Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://479043]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others cooling their heels in the Monastery: (16)
As of 2014-08-22 19:41 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The best computer themed movie is:











    Results (163 votes), past polls