How to deal with the situation where there is not enough zero filters?

[lkyf]

If we cannot obtain N_{i+1}(1-P_{i}) zero filters at layer i in the converged network. How to deal with it?

[he-y]

Assume we have 64 filters in the network.
If the pruning rate is 30%, we select 19 filters with small L2-norm and prune them, in other words, we change all the value of those 19 filters to zero.
If we set a threshold, we could always find them.