Asier Aztiria Alberto Izaguirre Rosa Basagoiti Juan Carlos Augusto Diane J. Cook Discovering Frequent Sets of Actions in Intelligent Environments. 153-160 2009 Intelligent Environments http://dx.doi.org/10.3233/978-1-60750-034-6-153 conf/intenv/2009 db/conf/intenv/intenv2009.html#AztiriaIBAC09