Nickel K, Pardàs M, Stiefelhagen R, Canton-Ferrer C, Landabaso J-L, Casas J. Activity Classification. In Computers in the Human Interaction Loop. London: Springer; 2009. pp. 107–119.


When a person enters a room, he or she immediately develops a mental concept about “what is going on” in the room; for example, people may be working in the room, people may be engaged in a conversation, or the room may be empty. The CHIL services depend on just the same kind of semantic description, which is termed activity in the following. The “Connector” or the “Memory Jog”, for example, could provide support that is appropriate for the given context if it knew about the current activity at the user’s place. This kind of higher-level understanding of human interaction processes could then be used, e.g., for rating the user’s current availability in a certain situation.