Hello,

I have created a differential-composition model (based on sum-constrained Beta-binomial) that allows

- data count distribution
- data compositionally
- category-wise variability/concentration

I would like to know if I could claim that

“This is (to our knowledge?) the first available model that models data compositionality while allowing for category-wise variability”

Does anybody know if such a model already exists published somewhere?

Thanks!