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Steepest Descent Iteration

June 7th, 2008 by Daniel Høyer Iversen

Steepest Descent Iteration ,  written   in Matlab to solve the Advection-diffusion equation. The matrix A (in A x= b) is a block pentadiagonal matrix.

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function Z = solver2(A,b)%Steepest Descent Iteration
 
p=params(0,0);
 
Z=p.noder(:,1)*5;
 
e=A(1,1);
 
for k=1:55000 %Gir feil på 0.2%, men bruker 36s
 
r=b-A*Z;
 
a= (r'*r)/((A*r)'*r);
 
Z=Z+a*r;
 
end
Do you want to use this code?

8 Responses to “Steepest Descent Iteration ”

  1. Claire

    Hi, I’m undergraduate student of mathematics.
    I’m very interesting with ur matlab code.
    May I take a copy?

    Thx b4.

    Oct 17th, 2008    2:46 pm   
  2. sagy

    I need to use the code for an assignment for one of my courses.

    Dec 20th, 2008    11:46 am   
  3. perastikos

    hello
    where can i find the source code for nim problem?
    thanks a lot

    May 31st, 2009    2:20 pm   
  4. Daniel Høyer Iversen

    perastikos : http://dahoiv.net/programmering/cpp/nim

    May 31st, 2009    6:48 pm   
  5. perastikos

    thanks for answer
    what about matlab language?

    May 31st, 2009    8:37 pm   
  6. vahi

    hi ,
    i am an undergraduate student in applied mathematics
    i want source code for gradient based optimization methods please can i get the steepest descent method, quasi newton method , newton method source cordes.

    Jul 18th, 2011    4:55 pm   
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