Matrix YOUNG3C

YOUNG3C: Acoustic scattering

from set ACOUST, from the Harwell-Boeing Collection

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

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Compressed MatrixMarket format file: young3c.mtx.gz (15624 bytes)

Compressed Harwell-Boeing format file: young3c.csa.gz (11441 bytes)

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Visualizations

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Structure Plot	City Plot

	3D Interactive City Plot
	[ VRML Version 2, gzipped ] 179563 bytes

Size Type

841 x 841, 3988 entries complex symmetric indefinite

Nonzeros

total diagonal below diagonal above diagonal A-A' A-A*
4183 841 1671 1671 0 190

Column Data Row Data

Average nonzeros per column : 5
Standard deviation : 0.56
index nonzeros
longest 161 8
shortest 1 3
Average nonzeros per row : 5
Standard deviation : 0.56
index nonzeros
longest 161 8
shortest 1 3

Bandwidths Profile Storage

lower 31 upper 31
average |i-j| 12 std.dev. 14

min max ave. std.dev.
lower bandwidth 1 31 29 5.1
upper bandwidth 1 31 29 5.1
Symmetric skyline storage requirement:24441

Heaviest diagonals

offset from main 0 -29 -1 1 29 -30 30 -28 28
nonzeros 841 812 812 812 812 24 24 23 23
accumulated percent 20.11 39.52 58.93 78.34 97.75 98.33 98.90 99.45 100.00

Top 9 out of 9 nonvoid diagonals.

Conditioning

Frobenius norm 8.5e+03 condition number (est.) 1.8e+04
2-norm (est.) 7.1e+02 diagonal dominance no

Set Information

Set ACOUST
Source:	David P. Young, Boeing Computer Services, Seattle, Washington
Discipline:	Dynamic analysis in structural engineering
Accession:	Spring 1984

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Last change in this page: Wed Sep 22 13:33:21 US/Eastern 2004 [Comments: ]