Transformer

\[\begin{bmatrix} Q_{1,1} & Q_{1,2} & \cdots & Q_{1,{\rm d\_model}} \\ Q_{2,1} & Q_{2,2} & \cdots & Q_{2,{\rm d\_model}} \\ \vdots & \vdots & \ddots & \vdots \\ Q_{{\rm len\_q},1} & Q_{1,2} & \cdots & Q_{1,{\rm d\_model}} \end{bmatrix}\]