Institute of Electrical & Electronic Engineers
Context-consistency checking is challenging in the dynamic and uncertain ubiquitous computing environments. This is because contexts are often noisy owing to unreliable sensing data streams, inaccurate data measurement, fragile connectivity and resource constraints. One of the state-of-the-art efforts is CEDA, which concurrently detects context consistency by exploring the happened-before relation among events. However, CEDA is seriously limited by several side effects - centralized detection manner that easily gets down the checker process, heavy computing complexity and false negative.