A Sparsity Constraint for Topic Models-Application to Temporal Activity Mining

@inproceedings{Varadarajan2010ASC,
  title={A Sparsity Constraint for Topic Models-Application to Temporal Activity Mining},
  author={Jagannadan Varadarajan and R{\'e}mi Emonet and Jean-Marc Odobez},
  year={2010}
}
We address the mining of sequential activity patterns from document logs given as word-time occurrences. We achieve this using topics that model both the cooccurrence and the temporal order in which words occur within a temporal window. Discovering such topics, which is particularly hard when multiple activities can occur simultaneously, is conducted through the joint inference of the temporal topics and of their starting times, allowing the implicit alignment of the same activity occurrences… CONTINUE READING

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