Fulvio Mastrogiovanni Antonello Scalmato Antonio Sgorbissa Renato Zaccaria CDL: an Integrated Framework for Context Specification and Recognition. 246-250 2008 ECAI http://dx.doi.org/10.3233/978-1-58603-891-5-246 conf/ecai/2008 db/conf/ecai/ecai2008.html#MastrogiovanniSSZ08