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Math Help - Gradient method problems - steepest conjugate etc.

  1. #1
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    Gradient method problems - steepest conjugate etc.

    I have three questions as a take home exam in my course.
    Do you know the answers?

    (Problems in the jpeg file)
    Attached Thumbnails Attached Thumbnails Gradient method problems - steepest conjugate etc.-nmio-sorusu-eksin.jpg  
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  2. #2
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    Quote Originally Posted by trante View Post
    I have three questions as a take home exam in my course.
    Do you know the answers?

    (Problems in the jpeg file)
    Has your instructor said you can get help with this take home exam? The thread is closed pending further information (you can pm me).
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  3. #3
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    Quote Originally Posted by trante View Post
    I have three questions as a take home exam in my course.
    Do you know the answers?

    (Problems in the jpeg file)
    Received via pm:

    Quote Originally Posted by trante
    She noted that we can even ask to our graduate friends for help. This work will effect our grades %5.
    Thanks for your interst.

    [snip]
    I have re-opened the thread.
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  4. #4
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    Quote Originally Posted by trante View Post
    I have three questions as a take home exam in my course.
    Do you know the answers?

    (Problems in the jpeg file)
    2. get x_{k+1} from x_k you must use Q to evaluate  g_k and Qg_k
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  5. #5
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    Question Steepest descent

    *Q1 Show the direction vectors are perpendicular to each other in the Steepest Descent Method;
    that is
    g_{k+1}^t  * g_k=0


    I know that in steepest descent, the algorithm makes zigzags.
    If one vector is A and the other is B.
    And the angle between them is \theta.
    In vector multiplication A*B=AB*cos \theta
    Because of cos(90)=0 the answer is 0.

    But how can i relate it with steepest descent??
    Last edited by mr fantastic; January 3rd 2009 at 02:59 AM. Reason: Moved from a new thread
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