Khatri-Rao Product
$$ \mathbf{A} \ast \mathbf{B} = \left(\mathbf{A}_{ij} \otimes \mathbf{B}_{ij}\right)_{ij} $$
Planted:
by L Ma;
References:
Similar Articles:
L Ma (2019). 'Khatri-Rao Product', Datumorphism, 06 April. Available at: https://datumorphism.leima.is/cards/math/khatri-rao/.