PsiLAB Help Manual Page

Section: High level matrix functions

Name: ||<-*|>

Matrix row versa column multiplication.
This function multiply each row from the argument matrix a with each column of the argument matrix b and stores each sum value of this multiplication in the new allocated matrix c.
[ c:('a, 'b, 'c) Matrix.t ] =
a:('a, 'b, 'c) Matrix.t ||<-*|>
b:('a, 'b, 'c) Matrix.t

Only applicable to 2 dimensional matrixes. Special case: matrix * vector. The new matrix has the size:
size[a]:(m,n) size[b]:(n,u) size[c]:(m,u)

Example: 
[] let a = fmatrix ~dim:[5;3] ~rand:[1.0] () ;; 
val a : (float, '_a, '_b) Matrix.t = <abstr> 
[] let b = fmatrix ~dim:[3;2] ~rand:[1.0] () ;; 
val b : (float, '_a, '_b) Matrix.t = <abstr> 
[] let c = a ||<-*|> b ;; 
val c : (float, '_a, '_b) Matrix.t = <abstr> 
[] print_fmat c ;; 
| 	 0.8906 	 0.9435 	 | 
| 	 1.059 	 1.058 	 | 
| 	 1.064 	 0.838 	 | 
| 	 0.6765 	 0.3218 	 | 
| 	 1.449 	 1.161 	 |

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