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Adjust migrant stock tables to have matching place of birth (origin) totals

Source: R/match_birthplace_tot.R
match_birthplace_tot.Rd

This function is predominantly intended to be used within the ffs routines in the migest package.

Usage

match_birthplace_tot(m1, m2, method = "rescale", verbose = FALSE)

Arguments

m1

Matrix of migrant stock totals at time t. Rows in the matrix correspond to place of birth and columns to place of residence at time t+1.

m2

Matrix of migrant stock totals at time t+1. Rows in the matrix correspond to place of birth and columns to place of residence at time t+1.

method

Character string matching either rescale, rescale-adjust-zero-fb, open or open-dr. See details.

verbose

Logical value to indicate the print the parameter estimates at each iteration of the rescale, as used in ipf2. By default FALSE.

Value

Returns a list object with:

m1_adj

Matrix of adjusted m1 where rows (place of births) match m2_adj.

m2_adj

Matrix of adjusted m2 where rows (place of births) match m1_adj.

in_mat

Matrix of estimated inflows into the system.

out_mat

Matrix of estimated outflows from the system.

Details

The rescale and rescale-adjust-zero-fb method ensure flow estimates closely match the net migration totals implied by the changes in population totals, births and deaths - as introduced in the Science paper. The rescale-adjust-zero-fb can adjust for rare cases when row total margins that are smaller than native born totals in countries where there are no foreign born populations (e.g. South Sudan 1990-1995). The open-dr method allows for moves in and out of the global system - as introduced in the Demographic Research paper. The open method is a slight improvement over open-dr - the calculation of the moves and in and out using more sensible weights.

References

Abel and Cohen (2019) Bilateral international migration flow estimates for 200 countries Scientific Data 6 (1), 1-13

Azose & Raftery (2019) Estimation of emigration, return migration, and transit migration between all pairs of countries Proceedings of the National Academy of Sciences 116 (1) 116-122

Abel, G. J. (2018). Estimates of Global Bilateral Migration Flows by Gender between 1960 and 2015. International Migration Review 52 (3), 809–852.

Abel, G. J. and Sander, N. (2014). Quantifying Global International Migration Flows. Science, 343 (6178) 1520-1522

See also

ffs_demo

Author

Guy J. Abel