add kgn algorithm

[Henry-yan]

add kgn algorithm

[maumueller]

Hi @Henry-yan! Thanks for your contribution: Could you link to your repo in the README.md and maybe add a bit information (is there a paper?) Are you planning to open-source your contribution?

[Henry-yan]

Hi @Henry-yan! Thanks for your contribution: Could you link to your repo in the README.md and maybe add a bit information (is there a paper?) Are you planning to open-source your contribution?↳

Thank you for your suggestion, we have updated the README.md with the repository link. We currently do not have plans to open source.

[Henry-yan]

Hello @maumueller, would you please consider merge this PR? Since there are already a lot of close-source algorithm in this repo, they should be fairly treated.

[Henry-yan]

Hello @maumueller @erikbern , we plan to submit a paper, and upon its acceptance, we intend to open-source our algorithm. Could you please consider merging our pull request first? It would be greatly appreciated.

[maumueller]

Alright, I'm merging this for now.