3.

for each $v_j\in w_i\left[j-\omega :j+\omega \right]$ do

4.

$J\left(\Phi \right)=-\log P\left(u_k|\Phi \left(v_j\right)\right)$

5.

$\Phi =\Phi -\frac{\partial J}{\partial \Phi }$ //使用随机梯度下降法优化目标函数

6.

end for

7.

end for

8.

return ${\Phi }_{n\times d}$ .