The phrase "a migration matrix" is correct and usable in written English.
It can be used in contexts related to data analysis, software development, or organizational change where a framework for understanding migration processes is needed.
Example: "The team developed a migration matrix to track the transition of data from the old system to the new one."
Alternatives: "migration framework" or "migration model".
Maximum likelihood estimation of a migration matrix and effective population sizes in n subpopulations by using a coalescent approach.
Beerli, P. & Felsenstein, J. Maximum likelihood estimation of a migration matrix and effective population sizes in n subpopulations by using a coalescent approach.
We adopted a migration matrix model allowing for asymmetric migration rates between regions and variable subpopulation sizes.
A migration matrix model with unequal population sizes and different migration rates was assumed (Beerli & Felsenstein, 1999, 2001).
The rate at which these two populations exchange individuals can be encoded in a discrete migration matrix (11) where represents the probability of an individual migrating from population 1 to population 2 at generation g (backwards in time).
The movement between demes is described by a backwards migration matrix such that the ij-th entry of the matrix corresponds to the probability that an individual in deme i migrated from deme j where i and j are not necessarily distinct.
Analyses were conducted with a full migration matrix model (Θ and Μ were estimated jointly from the data).
In contrast to migrate, bayesass estimates all pairwise migration rates rather than a user-defined migration matrix.
Thus we estimated Θ and M using a custom designed migration matrix where migration was only allowed between neighbouring populations.
Indicator variables I Rfrom,to and I Sfrom,to are added, giving the full parameterization of a single seasonal migration matrix cell as I Rfrom,to · r from,to · (1 + I S from,to · σ from,to ) and I Rfrom,to · r from,to · (1-I S from,to · σ from,to ) for the other part of the year.
We have then performed a maximum likelihood maximisation of this value in Genetree, given the migration matrix estimated in Migrate.
