karate — Zachary Karate Club

Description

Network of social ties among the 34 members of a university karate club in the United States, observed by the anthropologist W. W. Zachary from 1970 to 1972. An undirected edge connects two members who consistently interacted outside the activities of the club. During the observation period, a conflict between the club's instructor ("Mr. Hi", node 1) and its administrator (node 34) led the club to split into two.

There are two versions of the network, due to an inconsistency in the adjacency matrix published by Zachary, which is not symmetric for the pair of members 23 and 34: 77 has 77 edges and omits the edge between them, while 78 has 78 edges and includes it. The 78-edge version is the one most commonly used.

The networks have the following properties:

(Node) name: the member's number, as in the original study (1 to 34).
(Node) groups: the faction to which the member belonged after the split, as given in the data distributed by A. Clauset: 1 for the instructor's faction (node 1), 2 for the administrator's (node 34).

Tags

Social Offline Unweighted

Added

2020-08-11

Citation

W. W. Zachary, "An information flow model for conflict and fission in small groups." Journal of Anthropological Research 33, 452-473 (1977). 10.1086/jar.33.4.3629752 Sci-Hub

Upstream URL OK

https://aaronclauset.github.io/datacode.htm

Networks

Tip: click on a column header to sort the list, or hover over it for a description.

Column legend

$\left<k\right>$: Mean degree
$\sigma_k$: Standard deviation of the degrees
$\lambda_h$: Largest eigenvalue of the Hashimoto (non-backtracking) matrix
$\tau$: Random walk mixing time
$r$: Degree assortativity
$c$: Global clustering coefficient
$\oslash$: (Pseudo-) diameter
$S$: Relative size of the largest component
NPs: Node properties
EPs: Edge properties

Name	Nodes	Edges	$\left<k\right>$	$\sigma_k$	$\lambda_h$	$\tau$	$r$	$c$	$\oslash$	$S$	Kind	Mode	NPs	EPs	gt	GraphML	GML	csv
77	34	77	4.53	3.75	5.25	6.98	-0.47	0.26	5	1.00	Undirected	Unipartite	name groups		1 KiB	2 KiB	1 KiB	1 KiB
78	34	78	4.59	3.82	5.29	7.05	-0.48	0.26	5	1.00	Undirected	Unipartite	name groups		1 KiB	2 KiB	1 KiB	1 KiB

Ridiculograms^*

^* These are automatically generated force-directed visualizations, and can be quite meaningless for networks both big and small. They should not be taken seriously as sources of scientific insight. See here for a discussion.