Matrix Set PSMIGR

PSMIGR: Inter-county migration

from the Harwell-Boeing Collection

Set PSMIGR
Source:	Paul Slater, University of California at Santa Barbara
Discipline:	Demography
Accession:	November 1983

Three matrices obtained from records containing counts of persons by sex and age who migrated across counties in the USA between 1965 and 1970. The 1970 15\% sample data were used to tabulate the data. The first matrix gives the migration flow between counties in 1965 and 1970, so that entry (i,j) represents the migration from county j in 1965 to county i in 1970. For the second matrix, intra-county flows have been omitted (so that the diagonal is zero) and the matrix is in doubly-standardized (or doubly-stochastic) form. The third matrix is for doubly-standardized non-null diagonal flows.

Matrices in this set:

PSMIGR 1 (real unsymmetric, 3140 by 3140, 543162 entries), US inter-county migration 1965-1970.
PSMIGR 2 (real unsymmetric, 3140 by 3140, 540022 entries), US inter-county migration 1965-1970; zero diagonal; doubly stochastic
PSMIGR 3 (real unsymmetric, 3140 by 3140, 543162 entries), US inter-county migration 1965-1970; nonzero diagonal; doubly stochastic
Download the entire set PSMIGR (single compressed file, 9174247 bytes).
Help: My browser can't read the compressed data file. What now?

The Matrix Market is a service of the Mathematical and Computational Sciences Division / Information Technology Laboratory / National Institute of Standards and Technology.

[ Home ] [ Search ] [ Browse ] [ Resources ]

Last change in this page: Wed Sep 22 13:33:50 US/Eastern 2004 [Comments: ]