Is RobustBoost implemented?

[littlewine]

Hi,
thanks for uploading a python implementation of brown/robust boost.
I copied the tried to run the robustboost class and tried to run it, but I got the following error:

NameError: global name 't' is not defined

this is probably caused by while t < 1:, which is never initialized in the code, but I am not sure what value it should take and how, or if it should degrade over time.
I assume this is a stopping criterion, but could you help me out clarify this a little bit?

Thanks in advance!