## SNAP/sx-mathoverflow

SNAP network: Math Overflow temporal network

Name | sx-mathoverflow |
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Group | SNAP |

Matrix ID | 2793 |

Num Rows | 24,818 |

Num Cols | 24,818 |

Nonzeros | 239,978 |

Pattern Entries | 239,978 |

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 Math Overflow temporal network https://snap.stanford.edu/data/sx-mathoverflow.html Dataset information This is a temporal network of interactions on the stack exchange web site Math Overflow (http://mathoverflow.net/). 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-mathoverflow-a2q) user u commented on user v's question at time t (in the graph sx-mathoverflow-c2q) user u commented on user v's answer at time t (in the graph sx-mathoverflow-c2a) The graph sx-mathoverflow 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-mathoverflow) Nodes 24,818 Temporal Edges 506,550 Edges in static graph 239,978 Time span 2350 days Dataset statistics (sx-mathoverflow-a2q) Nodes 21,688 Temporal Edges 107,581 Edges in static graph 90,489 Time span 2350 days Dataset statistics (sx-mathoverflow-c2q) Nodes 16,836 Temporal Edges 203,639 Edges in static graph 101,329 Time span 2349 days Dataset statistics (sx-mathoverflow-c2a) Nodes 13,840 Temporal Edges 195,330 Edges in static graph 81,121 Time span 2350 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-mathoverflow.txt.gz All interactions sx-mathoverflow-a2q.txt.gz Answers to questions sx-mathoverflow-c2q.txt.gz Comments to questions sx-mathoverflow-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=88,580. In the SuiteSparse Matrix Collection, the primary matrix, Problem.A, is the overall static graph, with 239,978 edges, of size n-by-n with n=24,818. These edges represent the 506,550 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-mathoverflow-a2q graph. C2Q = Problem.aux.C2Q is the static sx-mathoverflow-c2q graph. C2A = Problem.aux.C2A is the static sx-mathoverflow-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: [506550x3] Problem.aux.temporal_edges_a2q: [107581x3] Problem.aux.temporal_edges_c2q: [203639x3] Problem.aux.temporal_edges_c2a: [195330x3] Each row in these matrices is a single temporal edge, (u,v,t). Summing up all entries in A gives 506,550, and likewise the sum of entries in the other graphs gives the number of temporal edges they represent. |