Transitivity and United States Migration Streams: A Comment
- 1 April 1980
- journal article
- research article
- Published by SAGE Publications in Environment and Planning A: Economy and Space
- Vol. 12 (4) , 381-384
- https://doi.org/10.1068/a120381
Abstract
The conclusion of Smith and Clayton (1978) that United States migration streams contain ‘significant’ numbers of intransitivities—thus undermining the applicability to migration of spatial-interaction models—is contraindicated. Fewer intransitivities than could be expected under a null hypothesis of randomness are found in the solution of a linear assignment problem. The solution consists of a single entry from each row and column of a generalized tournament model of 1965–1970 interstate migration. Three cycles are formed by the entries. Three is less than 4–519, the amount expected in a random assignment. Under the constraint that the entries ( fij) selected are greater than 0·5, indicative that more people move from i to j than from j to i, five intransitivities—still an insignificant number—are found. However, a highly significant number, fourteen, of intransitivities are found if the migration flows themselves—not a generalized tournament model of them—are studied.Keywords
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