From: Automatic ARIMA modeling-based data aggregation scheme in wireless sensor networks
Notation | Meaning |
---|---|
{x1, x2, …, x n } | Data series |
{x1′, x2′, …, x n ′} | Stationary data series |
I | Differencing order |
diff({x1, x2, …, x n },I) | Execute I order of differencing operation to {x1, x2, …, xn} |
variance( ) | Calculate variance |
ϵ | Application defined stationary threshold |
δ | Application defined BIC indicator threshold |