Bottom-up and/or Top-Down?
Can we express all we require by bottom-up composition of primitive events?
Can we take advantage of high-level models of context?
e.g. maps, plans, mathematical models, GIS
What can users be expected to express?
How is the top-down, bottom-up gap bridged and high-level requirements converted into event subscriptions?
“nearest empty meeting room?”, “turn off the lights if the room is empty”, “quickest way to get to Stansted airport?”
Dagstuhl seminar in May, DEBS in Cambridge in July