F＃向量rowvector乘法问题

Question

我需要将Vector乘以RowVector以获得矩阵作为结果。 但是F＃库对*运算符没有这样的实现。 我怎样才能做到这一点？

//wj(t+1)=wj(t) - a * (yk-dk)* xjk
let weightsDeltaRule (w : matrix, x : vector, y : vector, d : vector) (a : float) = 
    let delta = y - d
    w - a * (Vector.transpose x) * delta

UPD：

vector<'T> *  rowvec<'T> -> matrix<'T>
rowvec<'T> * vector<'T> -> 'T

Answer 1

您为什么认为Vector * RowVector = Matrix没有实现Vector * RowVector = Matrix ？

取自matrix.fsi

/// Multiply a column vector and a row vector to produce a matrix
static member ( * )   : Vector<'T>    * RowVector<'T> -> Matrix<'T>