issues about assign_lineage_groups() function

[AmoriLi]

Thanks for developing such a useful tool for reconstructing phylogenetic tree. when looking into the source code of assigning lineage groups to each cells, I am not sure about if it is correct in several details. There are two main questions confusing me as follows:

https://github.com/YosefLab/Cassiopeia/blob/master/cassiopeia/preprocess/lineage_utils.py 1. in the last 3rd line, should it be 'prev_clust_size = piv_nolg.shape[0]' because we only need to assign lineage group to the undefined cells with number more than 'min_clust_size'. Is there something important I've missed or misunderstood?

the above intBC set was used in iteratively assignment of lineage groups and the bottom one master_intBC was applied to calculate kinship_score. but these two intBC sets were actually not same because they were filtered via different criteria. so I am wondering if it is more efficient and accurate than using the same criteria to selecting intBC set and master_intBC?

Hope I have got the meaning of your code and looking forward to your reply~