Matrix LOP163

LOP163: LOPSI Stochastic Test Matrix

from set STOCH, from the NEP Collection

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

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Compressed MatrixMarket format file: lop163.mtx.gz (4041 bytes)

Compressed Harwell-Boeing format file: lop163.rua.gz (2243 bytes)

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Visualizations

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Structure Plot	City Plot

	3D Interactive City Plot
	[ VRML Version 2, gzipped ] 109450 bytes

Size Type

163 x 163, 935 entries real unsymmetric

Nonzeros

total diagonal below diagonal above diagonal A-A'
935 163 594 178 1196

Column Data Row Data

Average nonzeros per column : 5.7
Standard deviation : 1.1
index nonzeros
longest 8 8
shortest 156 2
Average nonzeros per row : 5.7
Standard deviation : 0.55
index nonzeros
longest 18 6
shortest 1 3

Bandwidths Profile Storage

lower 37 upper 17
average |i-j| 7.3 std.dev. 4.6

min max ave. std.dev.
lower bandwidth 0 36 12 4.8
upper bandwidth 0 16 8.6 2.6
Nonsymmetric skyline storage 3122

Heaviest diagonals

offset from main 0 -8 8 -9 -6 -12 -10 -4 -7 -13
nonzeros 163 124 120 70 70 68 67 64 62 11
accumulated percent 17.43 30.70 43.53 51.02 58.50 65.78 72.94 79.79 86.42 87.59

Top 10 out of 42 nonvoid diagonals.

Conditioning

Frobenius norm 8.7 condition number (est.) 3.4e+07
2-norm (est.) 1.1 diagonal dominance no

Set Information

Set STOCH
Source:	W.J. Stewart, North Carolina State University and A. Jennings, Queen's University, Belfast, Ireland.
Discipline:	Analysis and evaluation of computer systems

The Matrix Market is a service of the Mathematical and Computational Sciences Division / Information Technology Laboratory / National Institute of Standards and Technology.

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Last change in this page: Wed Sep 22 13:37:28 US/Eastern 2004 [Comments: ]