estimate_rank_of_mrca_unbiased

estimate_rank_of_mrca_unbiased(coincident_ranks_from_first_disparity_through_first_commonality: Iterator[int], p_differentia_collision: float, prior: PriorBase) → float | None

Compute an estimate for the rank of the most recent common ancestor (MRCA) that, on average, avoids systematic over- or under-estimation.

Parameters

coincident_ranks_from_first_disparity_through_first_commonalitytyping.Iterator[int]

Iterator of integer values indicating the coincident ranks between two taxa.

Inclusive to first disparity and first commonality.

p_differentia_collisionfloat

The multiplicative inverse of the number of possible differentia.

priorPriorBase

Prior expectation for the distribution of MRCA generation between hereditary stratigraphic columns.

Returns

typing.Optional[float]

Estimated rank of the MRCA, or None if the two hereditary stratigraphic artifacts definitively share no common ancestor.