IMPCOL E: Chemical engineering plant models
Hydrocarbon separation problem

from set CHEMIMP, from the Harwell-Boeing Collection

Download as

Compressed MatrixMarket format file: impcol_e.mtx.gz (7785 bytes)
Compressed Harwell-Boeing format file: impcol_e.rua.gz (5772 bytes)

Visualizations

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

Structure Plot	City Plot
Spectral Portrait	3D Interactive City Plot
	[ VRML Version 2, gzipped ] 161840 bytes

Matrix Statistics

Size	Type
225 x 225, 1308 entries	real unsymmetric
Nonzeros
total diagonal below diagonal above diagonal A-A' 1303 56 818 429 2362
Column Data	Row Data
Average nonzeros per column : 5.8 Standard deviation : 6.9 index nonzeros longest 37 23 shortest 10 1	Average nonzeros per row : 5.8 Standard deviation : 4.5 index nonzeros longest 36 12 shortest 1 1
Bandwidths	Profile Storage
lower 93 upper 36 average |i-j| 23 std.dev. 22	min max ave. std.dev. lower bandwidth 0 92 26 26 upper bandwidth 0 35 9.6 9.9 Nonsymmetric skyline storage 7768
Heaviest diagonals
offset from main 0 1 3 11 12 6 -23 -4 -17 -6 nonzeros 56 46 30 30 29 27 25 25 24 24 accumulated percent 4.30 7.83 10.13 12.43 14.66 16.73 18.65 20.57 22.41 24.25 Top 10 out of 120 nonvoid diagonals.
Conditioning
Frobenius norm 1.6e+04 condition number (est.) 9.3e+06 2-norm (est.) 5e+03 diagonal dominance no

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