**Stack Overflow**

# Stack Overflow

## About this network

This is the bipartite Stack Overflow favorite network. Stack Overflow is the main question and answer website of the Stack Exchange Network. The nodes represent users and posts. An undirected, unweighted edge denotes that a user has marked a post as a favorite.

## Network info

Code | SO |

Category | ⬤ Rating |

Data source | http://www.clearbits.net/torrents/1881-dec-2011 |

Vertex type | User, post |

Edge type | Favorite |

Format | Bipartite |

Edge weights | Unweighted |

Metadata | Timestamps |

Size | 1,187,072 = 641,876 + 545,196 vertices (users + posts) |

Volume | 1,301,942 edges (favorites) |

Average degree (overall) | 4.0567 edges / vertex |

Average user degree | 2.3880 edges / vertex |

Average post degree | 13.467 edges / vertex |

Fill | 2.47 × 10^{–5} edges / vertex^{2} |

Maximum degree | 6,119 edges |

Wedge count | 205,586,615 |

Claw count | 168,997,476,966 |

Square count | 18,293,548 |

4-tour count | 971,310,588 |

Power law exponent (estimated) with d_{min} | 2.0110 (d_{min} = 1) |

Gini coefficient | 70.6% |

Relative edge distribution entropy | 89.1% |

Assortativity | –0.039986 |

Diameter | 20 edges |

90-percentile effective diameter | 6.42 edges |

Mean shortest path length | 5.58 edges |

Spectral norm | 99.977 |

Algebraic connectivity | 0.013941 |

Preferential attachment exponent | 0.71022 (ε = 4.2594) |

## Downloads

TSV file: | stackexchange-stackoverflow.tar.bz2 (6.09 MiB) |

Extraction code: | stackexchange.tar.bz2 (14.89 KiB) |

## References

[1] | Stack overflow network dataset -- KONECT, October 2016. [ http ] |

[2] | Stack Exchange Inc. Stack exchange data explorer. http://data.stackexchange.com/, 2011. |