Overview This is a temporal hypergraph dataset, which here means a sequence of timestamped hyperedges where each hyperedge is a set of nodes. In this dataset, nodes are tags, and hyperedges are the sets of tags applied to questions on askubuntu.com. The timestamps are in ISO8601 format and are normalized to start at 0. This dataset is derived from tags on Ask Ubuntu posts. Statistics Some basic statistics of this dataset are: number of nodes: 3,029 number of timestamped hyperedges: 271,233 distribution of the connected components: Component Size, Number 3021, 1 1, 8 Source of original data Sources: tags-ask-ubuntu dataset StackExchange References If you use this dataset, please cite these references: Simplicial closure and higher-order link prediction. Austin R. Benson, Rediet Abebe, Michael T. Schaub, Ali Jadbabaie, and Jon Kleinberg. Proceedings of the National Academy of Sciences (PNAS), 2018.