Abstract definition of matrix multiplication
In the following tables, matrix http://wiki.apache.org/hama-data/attachments/MatrixMultiply/attachments/matrix_a.gif represents the quantities of the materials P and Q to produce products M and N. Matrix http://wiki.apache.org/hama-data/attachments/MatrixMultiply/attachments/matrix_b.gif represents the prices of the materials P and Q of the suppliers C1 and C2.
In this case, the first row of the second column of AB, aq + bs, represents the total cost of the producing product A.
- See how to multiply matrices using Map/Reduce