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WEST0067: Chemical engineering plant models
Cavett problem with five components

from set CHEMWEST, from the Harwell-Boeing Collection

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Visualizations

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Structure Plot City Plot
structure plot city plot
Spectral Portrait 3D Interactive City Plot
spectral portrait

[ VRML Version 2, gzipped ] 37679 bytes


Matrix Statistics

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Size Type
67 x 67, 294 entries real unsymmetric
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
294 2 100 192 574
Column Data Row Data
Average nonzeros per column : 4.4
Standard deviation : 2

indexnonzeros
longest1 10
shortest12 2

Average nonzeros per row : 4.4
Standard deviation : 1.1

indexnonzeros
longest10 6
shortest56 1

Bandwidths Profile Storage
lower60 upper26
average |i-j|14 std.dev.11
minmaxave.std.dev.
lower bandwidth1 60 19 14
upper bandwidth2 26 14 5.5

Nonsymmetric skyline storage 2129

Heaviest diagonals
offset from main7 10 16 12 13 5 8 2 3 6
nonzeros18 18 17 15 14 11 11 10 10 10
accumulated percent 6.1212.2418.0323.1327.8931.6335.3738.7842.1845.58

Top 10 out of 70 nonvoid diagonals.
Conditioning
Frobenius norm13 condition number (est.)3e+02
2-norm (est.)4.1 diagonal dominanceno


Set Information

Set CHEMWEST
Source: Art Westerberg, University of Pittsburgh
Discipline:Chemical engineering
Accession:Summer 1983


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Last change in this page: Wed Sep 22 13:33:31 US/Eastern 2004 [Comments: ]