During the class, I presented techniques from 1998 to 2019. Someone asked for the 2021 version. Here it is:
https://arxiv.org/pdf/2009.07011.pdf
It has just been accepted for publication in a journal and will probably appear later this year. This goes to show that this is a surprisingly difficult problem on which researchers are still working after all these years.
This is of course completely optional and not part of the class itself.
Cheers
Pascal
