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PSMIGR 3: Inter-county migration
US inter-county migration 1965-1970; nonzero diagonal; doubly stochastic

from set PSMIGR, from the Harwell-Boeing Collection

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Visualizations

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Structure Plot City Plot
structure plot city plot


Matrix Statistics

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Size Type
3140 x 3140, 543162 entries real unsymmetric
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
543160 3138 275734 264288 821562
Column Data Row Data
Average nonzeros per column : 1.7e+02
Standard deviation : 2.4e+02

indexnonzeros
longest204 2464
shortest270 2

Average nonzeros per row : 1.7e+02
Standard deviation : 1.9e+02

indexnonzeros
longest204 2294
shortest1652 3

Bandwidths Profile Storage
lower3125 upper3121
average |i-j|8.7e+02 std.dev.7.9e+02
minmaxave.std.dev.
lower bandwidth1 3125 1.5e+03 9e+02
upper bandwidth1 3121 1.5e+03 9e+02

Nonsymmetric skyline storage 9368905

Heaviest diagonals
offset from main0 1 -1 2 -2 3 -3 4 -4 -5
nonzeros3138 1723 1651 1472 1453 1385 1374 1367 1339 1327
accumulated percent 0.58 0.89 1.20 1.47 1.74 1.99 2.25 2.50 2.74 2.99

Top 10 out of 6183 nonvoid diagonals.
Conditioning
Frobenius norm36 condition number (est.)1e+02
2-norm (est.)1 diagonal dominanceno


Set Information

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


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Last change in this page: Wed Sep 22 13:33:49 US/Eastern 2004 [Comments: ]