LSHP2614: Graded L-shape patterns

from set LSHAPE, from the Harwell-Boeing Collection

Download as

Compressed MatrixMarket format file: lshp2614.mtx.gz (22604 bytes)
Compressed Harwell-Boeing format file: lshp2614.psa.gz (21607 bytes)

Visualizations

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

Structure Plot

Matrix Statistics

Size	Type
2614 x 2614, 10297 entries	pattern symmetric indefinite
Nonzeros
total diagonal below diagonal above diagonal A-A' 17980 2614 7683 7683 0
Column Data	Row Data
Average nonzeros per column : 6.9 Standard deviation : 0.48 index nonzeros longest 1 7 shortest 14 4	Average nonzeros per row : 6.9 Standard deviation : 0.48 index nonzeros longest 1 7 shortest 14 4
Bandwidths	Profile Storage
lower 2587 upper 2587 average |i-j| 53 std.dev. 2.3e+02	min max ave. std.dev. lower bandwidth 1 2587 91 3e+02 upper bandwidth 1 2587 91 3e+02 Symmetric skyline storage requirement:238566
Heaviest diagonals
offset from main 0 -1 1 -10 10 -9 9 -8 8 -7 nonzeros 2614 2302 2302 570 570 510 510 450 450 390 accumulated percent 14.54 27.34 40.14 43.31 46.48 49.32 52.16 54.66 57.16 59.33 Top 10 out of 897 nonvoid diagonals.
Conditioning
Pattern matrix. No conditioning information.

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Last change in this page: Wed Sep 22 13:33:44 US/Eastern 2004 [Comments: ]