What does the Normalizer mean?

[Kihy]

In main.py one of the required argument is normalizer. What is it exactly and how can I generate such a file?

[dongtsi]

Briefly, use python tools.py to generate the normalizer.pkl.
normalizer is a special argument needed for Kitsune.
As Kitsune is an online NIDS dealing with streaming traffic, its normalization of features is different from offline data (MIN and MAX features' values may be updated all the time).
To be fair, we simulate this normalization for each mutated feature.
That's why we need this special argument for Kitsune.