PSMIGR 2: Inter-county migration
US inter-county migration 1965-1970; zero diagonal; doubly stochastic

from set PSMIGR, from the Harwell-Boeing Collection

Download as

Compressed MatrixMarket format file: psmigr_2.mtx.gz (4648107 bytes)
Compressed Harwell-Boeing format file: psmigr_2.rua.gz (3787513 bytes)

Visualizations

Click on image to get an enlarged version. Click on label to get an explanation.

Structure Plot	City Plot

Matrix Statistics

Size	Type
3140 x 3140, 540022 entries	real unsymmetric
Nonzeros
total diagonal below diagonal above diagonal A-A' 540022 0 275734 264288 821562
Column Data	Row Data
Average nonzeros per column : 1.7e+02 Standard deviation : 2.4e+02 index nonzeros longest 204 2463 shortest 270 2	Average nonzeros per row : 1.7e+02 Standard deviation : 1.9e+02 index nonzeros longest 204 2293 shortest 1652 3
Bandwidths	Profile Storage
lower 3125 upper 3121 average |i-j| 8.8e+02 std.dev. 7.9e+02	min max ave. std.dev. lower bandwidth 2 3125 1.5e+03 9e+02 upper bandwidth 2 3121 1.5e+03 9e+02 Nonsymmetric skyline storage 9369661
Heaviest diagonals
offset from main 1 -1 2 -2 3 -3 4 -4 -5 -6 nonzeros 1723 1651 1472 1453 1385 1374 1367 1339 1327 1314 accumulated percent 0.32 0.62 0.90 1.17 1.42 1.68 1.93 2.18 2.42 2.67 Top 10 out of 6182 nonvoid diagonals.
Conditioning
Frobenius norm 15 condition number (est.) 1e+02 2-norm (est.) 1 diagonal dominance no

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