migration.weighted.gini.mean: Migration-weighted Mean Gini Index
Description
The Migration-weighted Mean Gini Index is simply the
average of the Migration-weighted In-migration
(migration.weighted.gini.in) and the
Migration-weighted Out-migration
(migration.weighted.gini.out) Gini Indices:
$$MWG^A = \frac{MWG^O + MWG^I}{2}$$
Usage
migration.weighted.gini.mean(m, mwgi, mwgo)
Arguments
m
migration matrix
mwgi
optionally passed (precomputed)
Migration-weighted In-migration Gini Index
mwgo
optionally passed (precomputed)
Migration-weighted Out-migration Gini Index
Value
This combined index results in a number between 0 and 1
where 0 means no spatial focusing and 1 shows maximum
focusing.
References
M. Bell, M. Blake, P. Boyle, O.
Duke-Williams, P. Rees, J. Stillwell and G. Hugo (2002)
Cross-National Comparison of Internal Migration. Issues
and Measures. Journal of the Royal Statistical
Society. Series A (Statistics in Society)165,
435--464