Evaluation using concordance index for the competing risk prediction

[tommyvcc]

Dear Authors,

Thank you very much for this great work.
I am very interested in the Gradient boosting CIF for competing risk modelling, and I think it can help me in my PhD project.
In the tutorial-part-1 notebook, in the competing risk modelling section, you applied the Gradient boost CIF and you did model evaluation using "cause specific brier score".

I wonder if there is any chance you can evaluate the competing risk model, using the concordance index?
What would be the code for that?

That would be extremely helpful for my PhD project

Thank you very much

Looking forward to hearing back from you