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The XQuery solution to sliding window use case Q6 (section 3.15.6) doesn't seem to match the problem. Where does the condition $s_curr/@time + 3 come from?
In the last publication I fixed the description of the use case to: Detect outliers (current value is two times higher (lower) than the average of the previous three values) in a sequence of temp values
I'm marking this bug FIXED. Mike, if you agree with the solution, please mark it CLOSED.