**Zachary karate club**

# Zachary karate club

## About this network

This is the well-known Zachary karate club network. The data was collected from the members of a university karate club by Wayne Zachary in 1977. Each node represents a member of the club, and each edge represents a tie between two members of the club. This is a classical social network dataset from the literature. The network is very small: it has 34 vertices and 78 undirected edges.

## Network info

Code | ZA |

Category | ⬤ HumanSocial |

Data source | http://vlado.fmf.uni-lj.si/pub/networks/data/ucinet/ucidata.htm#zachary |

Vertex type | Member |

Edge type | Tie |

Format | Undirected |

Edge weights | Unweighted |

Size | 34 vertices (members) |

Volume | 78 edges (ties) |

Average degree | 4.5882 edges / vertex |

Fill | 0.13904 edges / vertex^{2} |

Maximum degree | 17 edges |

Size of LCC | 34 vertices (network is connected) |

Wedge count | 528 |

Claw count | 1,764 |

Triangle count | 45 |

Square count | 154 |

4-tour count | 3,500 |

Power law exponent (estimated) with d_{min} | 2.1610 (d_{min} = 2) |

Gini coefficient | 38.5% |

Relative edge distribution entropy | 92.5% |

Assortativity | –0.47561 |

Clustering coefficient | 25.6% |

Diameter | 5 edges |

90-percentile effective diameter | 3.44 edges |

Effective diameter | 3.5609 edges (estimated) |

Mean shortest path length | 2.44 edges |

Spectral norm | 6.7257 |

Algebraic connectivity | 0.46853 |

## Downloads

TSV file: | ucidata-zachary.tar.bz2 (1.77 KiB) |

Extraction code: | ucidata.tar.bz2 (15.80 KiB) |

RDF: | ucidata-zachary.n3.bz2 (993 bytes) |