The Matrix Market

Home Search Browse Resources

DWT 512: Everstine's collection
Submarine

from set DWT, from the Harwell-Boeing Collection

[Download] [Visualizations] [Matrix Statistics] [Set Information]

Download as

Help: My browser can't read the compressed data files. What now?

Visualizations

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

Structure Plot
structure plot

Matrix Statistics

Click on label to get an explanation.

Size Type
512 x 512, 3502 entries pattern symmetric indefinite
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
3502 512 1495 1495 0
Column Data Row Data
Average nonzeros per column : 6.8
Standard deviation : 3.5

indexnonzeros
longest81 15
shortest1 1

Average nonzeros per row : 6.8
Standard deviation : 3.5

indexnonzeros
longest81 15
shortest1 1

Bandwidths Profile Storage
lower74 upper74
average |i-j|9.5 std.dev.11
minmaxave.std.dev.
lower bandwidth1 74 13 13
upper bandwidth1 74 13 13

Symmetric skyline storage requirement:6530
Heaviest diagonals
offset from main0 -1 1 -3 3 -2 2 -4 4 -17
nonzeros512 364 364 144 144 131 131 82 82 56
accumulated percent14.6225.0135.4139.5243.6347.3751.1153.4655.8057.40

Top 10 out of 117 nonvoid diagonals.
Conditioning
Pattern matrix. No conditioning information.

Set Information

Set DWT
Source: Gordon Everstine, David W. Taylor Naval Ship Research and Development Center, Bethesda, MD, USA.
Discipline:Structural engineering
Accession:Summer 1980

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 13:33:35 US/Eastern 2004 [Comments: ]