Karate club, from Wayne Zachary, 1977
Name karate
Group Newman
Matrix ID 2399
Num Rows 34
Num Cols 34
Nonzeros 156
Pattern Entries 156
Kind Undirected Graph
Symmetric Yes
Date 1977
Author W. Zachary
Editor M. Newman
Structural Rank
Structural Rank Full
Num Dmperm Blocks
Strongly Connect Components 1
Num Explicit Zeros 0
Pattern Symmetry 100%
Numeric Symmetry 100%
Cholesky Candidate no
Positive Definite no
Type binary
SVD Statistics
Matrix Norm 6.725698e+00
Minimum Singular Value 5.065855e-18
Condition Number 1.327653e+18
Rank 24
Null Space Dimension 10
Full Numerical Rank? no
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Network collection from M. Newman                                                                
The graph "karate" contains the network of friendships between the 34      
members of a karate club at a US university, as described by Wayne Zachary 
in 1977.  If you use these data in your work, please cite W. W. Zachary, An
information flow model for conflict and fission in small groups, Journal of
Anthropological Research 33, 452-473 (1977).