## SNAP/sx-askubuntu

SNAP network: Ask Ubuntu temporal network

Name | sx-askubuntu |
---|---|

Group | SNAP |

Matrix ID | 2792 |

Num Rows | 159,316 |

Num Cols | 159,316 |

Nonzeros | 596,933 |

Pattern Entries | 596,933 |

Kind | Directed Temporal Multigraph |

Symmetric | No |

Date | 2017 |

Author | A. Paranjape, A. R. Benson, and J. Leskovec |

Editor | J. Leskovec |

Download | MATLAB Rutherford Boeing Matrix Market |
---|---|

Notes |
SNAP (Stanford Network Analysis Platform) Large Network Dataset Collection, Jure Leskovec and Anrej Krevl, http://snap.stanford.edu/data, June 2014. email: jure at cs.stanford.edu Ask Ubuntu temporal network https://snap.stanford.edu/data/sx-askubuntu.html Dataset information This is a temporal network of interactions on the stack exchange web site Ask Ubuntu (http://askubuntu.com/). There are three different types of interactions represented by a directed edge (u, v, t): user u answered user v's question at time t (in the graph sx-askubuntu-a2q) user u commented on user v's question at time t (in the graph sx-askubuntu-c2q) user u commented on user v's answer at time t (in the graph sx-askubuntu-c2a) The graph sx-askubuntu contains the union of these graphs. These graphs were constructed from the Stack Exchange Data Dump. Node ID numbers correspond to the 'OwnerUserId' tag in that data dump. Dataset statistics (sx-askubuntu) Nodes 159,316 Temporal Edges 964,437 Edges in static graph 596,933 Time span 2613 days Dataset statistics (sx-askubuntu-a2q) Nodes 137,517 Temporal Edges 280,102 Edges in static graph 262,106 Time span 2613 days Dataset statistics (sx-askubuntu-c2q) Nodes 79,155 Temporal Edges 327,513 Edges in static graph 198,852 Time span 2047 days Dataset statistics (sx-askubuntu-c2a) Nodes 75,555 Temporal Edges 356,822 Edges in static graph 178,210 Time span 2418 days Source (citation) Ashwin Paranjape, Austin R. Benson, and Jure Leskovec. "Motifs in Temporal Networks." In Proceedings of the Tenth ACM International Conference on Web Search and Data Mining, 2017. Files File Description sx-askubuntu.txt.gz All interactions sx-askubuntu-a2q.txt.gz Answers to questions sx-askubuntu-c2q.txt.gz Comments to questions sx-askubuntu-c2a.txt.gz Comments to answers Data format SRC DST UNIXTS where edges are separated by a new line and SRC: id of the source node (a user) TGT: id of the target node (a user) UNIXTS: Unix timestamp (seconds since the epoch) --------------------------------------------------------------------------- Notes on inclusion into the SuiteSparse Matrix Collection, July 2018: --------------------------------------------------------------------------- The SNAP graph is 1-based, with nodes in all graphs numbered 1 to n=515,280. In the SuiteSparse Matrix Collection, the primary matrix, Problem.A, is the overall static graph, with 596,993 edges, of size n-by-n with n=159,316. These edges represent the 964,437 temporal edges. A(i,j) is the number of times person u=nodeid(i) interacted with person v=nodeid(j), with a temporal edge (u,v,t), with any kind of interaction. Problem.aux.nodeid is a list of the node id's that appear in the SNAP data set. A2Q = Problem.aux.Q2A is the static sx-askubuntu-a2q graph. C2Q = Problem.aux.C2Q is the static sx-askubuntu-c2q graph. C2A = Problem.aux.C2A is the static sx-askubuntu-c2a graph. These sum together to give the the overall graph. That is, A = A2Q + C2Q + C2A. A2Q(u,v) is the number of times person u answered v's questions. C2Q(u,v) is the number of times person u commented on v's question. C2A(u,v) is the number of times person u commented on v's answer. The temporal edges are held in: Problem.aux.temporal_edges: [964437x3] Problem.aux.temporal_edges_a2q: [280102x3] Problem.aux.temporal_edges_c2q: [327513x3] Problem.aux.temporal_edges_c2a: [356822x3] Each row in these matrices is a single temporal edge, (u,v,t). Summing up all entries in A gives 964,437, and likewise the sum of entries in the other graphs gives the number of temporal edges they represent. |