estimate_rank_of_mrca_between
- estimate_rank_of_mrca_between(first: Union[HereditaryStratigraphicColumn, HereditaryStratigraphicSpecimen], second: Union[HereditaryStratigraphicColumn, HereditaryStratigraphicSpecimen], estimator: str, prior: Literal['arbitrary', 'uniform'] | PriorBase) float | None
At what generation did the most recent common ancestor of first and second occur?
Parameters
- estimator{“maximum_likelihood”, “unbiased”}
What estimation method should be used? Options are “maximum_likelihood” or “unbiased”.
The “maximum_likelihood” estimator is faster to compute than the “unbiased” estimator.
- prior{“arbitrary”, “uniform”} or object implementing prior interface
Prior probability density distribution over possible generations of the MRCA.
Implementations for arbitrary, geometric, exponential, and uniform priors are available in hstrat.phylogenetic_inference.priors. User -defined classes specifying custom priors can also be provided.
Returns
- float, optional
Estimate of MRCA rank, unless first and second definitively share no common ancestor in which case None will be returned.
See Also
- calc_rank_of_mrca_bounds_between :
Calculates confidence intervals for generation of most recent common ancestor between two hereditary stratigraphic columns.
- does_definitively_have_no_common_anestor :
Does the hereditary stratigraphic record definitively prove that first and second could not possibly share a common ancestor?