how to multiply to two matirces without explicitly transpose them.
it means u can get A*B, A'*B, A*B', and (A*B)' only with row based matrix A
and B
--S
-----原始邮件-----
From: Song Liu
Sent: Friday, January 21, 2011 11:02 PM
To: [email protected]
Subject: Re: Result of Matrix * Matrix Transpose
Dear Ahmed,
Sorry maybe this mail may not be directly related to your problem, but I
found this problem has been solved in my project BigO
(http://bigo2.googlecode.com), and if you are interested, in the latest
release, there is a example shows how to multiply to two matirces without
explicitly transpose them.
Please check out the simple.sh file unde folder 'examples'
Best Wishes
Song Liu
-----原始邮件-----
From: ahmed.nagy
Sent: Friday, January 21, 2011 8:55 AM
To: [email protected]
Subject: Result of Matrix * Matrix Transpose
I have two matrices A and B both of them are distributed row matrices I want
to have the result of A * B' when I did that I got the values for A * B Any
ideas how to compute A * B ' ?
That is a bit of my code this gives the result of A * B
A=
1.000 2.000 3.000
4.000 5.000 6.000
7.000 8.000 9.000
B'=
Result expected
14.000 32.000 50.000
32.000 77.000 122.000
50.000 122.000 194.000
Result printed
The result of matrix AA'
30.0 36.0 42.0
66.0 81.0 96.0
102.0 126.0 150.0
the result printed is basically A.A
Matrix_v_mult_v_transpose=(Matrix_v.times(Matrix_v.transpose()));
System.out.println("The result of matrix AA'");
printDistributedMatrix(Matrix_v_mult_v_transpose);
-----
Ahmed Nagy
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