Merging two clusters about learn-to-cluster

[yl-1993]

Hi @nik13 , for merging two clusters to create 1 cluster, basically I come up with two ideas.
(1) You may leverage the idea of cluster proposal and try to evaluate the quality of merged clusters. For example, you can design different merge strategies to create a lot of proposal and use a trained gcn-d to select the best one.
(2) You can refer to another paper from our group, which exploits imitation learning for cluster merging problem.