一、重要性评判准则:
变量说明:Θ(t)代表t时刻的参数; g(Θ(t))为loss对t时刻参数的梯度;H(Θ(t))为Hessian矩阵;损失为L(Θ(t));I(Θp(t))为重要性。
1.Magnitude-based measures:

2.Loss-preservation based measures

3.Increase in gradient-norm based measures:

二、论文第四节
1.GRADIENT FLOW AND MAGNITUDE-BASED PRUNING