Hi

I am really confused with the "transpose" related stuff.

Can anyone work me through it?

and the paritial differentiation with respect to it

===========================

why is

instead of

and differentiate with respect to beta is

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- April 24th 2010, 09:22 AMcasperychow to multiply out "transpose"?
Hi

I am really confused with the "transpose" related stuff.

Can anyone work me through it?

and the paritial differentiation with respect to it

===========================

why is

instead of

and differentiate with respect to beta is

- April 24th 2010, 03:30 PMdwsmith
- April 24th 2010, 04:44 PMcasperyc
Hi there,

I think what you have writtern is pretty obvious going to give me my answer.

So, my actual problem is dont understand the order of the multiplication,

say

what I would do is

which give me a different 'middle' term...

is just a vector

and if you could see the second pic (which is just next to it)

it confuses me more.... - April 24th 2010, 04:46 PMdwsmith
- April 24th 2010, 04:50 PMdwsmith
If beta is a vector, is inner product.

- April 24th 2010, 04:54 PMcasperyc
- April 24th 2010, 04:57 PMdwsmith
Are the Xs and Ys matrices?

- April 24th 2010, 05:02 PMcasperyc
- April 24th 2010, 05:06 PMdwsmith
- April 24th 2010, 05:20 PMdwsmith
If in the second problem if beta is a scalar and X and Y are vectors, the quantity will simplify down to