TOLS4000: Tolosa Matrix

generated by MVMTLS, from the NEP Collection

Download as

Compressed MatrixMarket format file: tols4000.mtx.gz (51515 bytes)
Compressed Harwell-Boeing format file: tols4000.rua.gz (41184 bytes)

Visualizations

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

Structure Plot	City Plot
	3D Interactive City Plot
	[ VRML Version 2, gzipped ] 221744 bytes

Matrix Statistics

Size	Type
4000 x 4000, 8784 entries	real unsymmetric
Nonzeros
total diagonal below diagonal above diagonal A-A' 8784 3200 3659 1925 9154
Column Data	Row Data
Average nonzeros per column : 2.2 Standard deviation : 3.1 index nonzeros longest 801 22 shortest 19 1	Average nonzeros per row : 2.2 Standard deviation : 5.9 index nonzeros longest 801 90 shortest 1 1
Bandwidths	Profile Storage
lower 2401 upper 2418 average |i-j| 7.9e+02 std.dev. 8.2e+02	min max ave. std.dev. lower bandwidth 0 2400 1.1e+03 8.2e+02 upper bandwidth 0 2417 1.8e+02 3.7e+02 Nonsymmetric skyline storage 5203012
Heaviest diagonals
offset from main 0 -800 800 -2400 -1600 1600 2400 -801 -799 -1 nonzeros 3200 1600 818 800 800 18 18 17 17 17 accumulated percent 36.43 54.64 63.96 73.06 82.17 82.38 82.58 82.78 82.97 83.16 Top 10 out of 177 nonvoid diagonals.
Conditioning
Frobenius norm 3e+08 condition number (est.) 2.7e+07 2-norm (est.) 2.3e+07 diagonal dominance no

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Last change in this page: Wed Sep 22 13:37:32 US/Eastern 2004 [Comments: ]