@inproceedings{ortiz-et-al_is2008,
  author       = {Ortiz, Javier and García, Angel and Borrajo, Daniel},
  pages        = {198 -- 1913},
  title        = {A relational learning approach to activity recognition from sensor
    readings},
  year         = 2008,
  booktitle    = {2008 4th International IEEE Conference Intelligent Systems, IS 2008},
}