This operator uses the Local Outlier Factor (LOF) algorithm to find anomalies. You should use this operator with a window, because the operator saves all tuples in the current window and uses the normal LOF-algorithm on this set of tuples. If the number of tuples is too high, the algorithm may take a while to process the calculations.
Parameters
Example
PQL query for the LOF operator
/// Searches for anomalies in temperature data #PARSER PQL #ADDQUERY temperatureWindow = ELEMENTWINDOW({ size = 100 }, System.temperature ) lofAnalysis = LOFANOMALYDETECTION({ lofvalue = 2.5, neighbors = 5, ignoreequal = 'true', nameofparameter = 'temp', deliverFirstElements = 'true' }, temperatureWindow )