Knowledge representation for ambient security

Ambient intelligence envisages an articulated, though transparent, interaction between the user and the environment. According to this grand vision, appliances and systems embedded in the environment have to react to the user's presence and provide services in a customized fashion. Therefore, ambient intelligence systems should be endowed with context awareness capabilities in order to provide the proper responses for each user. This paper specifically shows how the system can be instructed to recognize events occurring in the observed environment for security purposes.