System and method for stream processing

Abstract

An input stream of events is processed to obtain an output stream of events. Consecutive events are selected from the input stream using a sliding window to obtain sliding window events, then a function is applied thereto to obtain an output result value. Operations of: outputting the output result value in the output stream; splitting the sliding window events into filter-complying events and pending events; applying the function on the pending events to obtain preliminary value(s); selecting, from the input stream, a second plurality of events; adding the second plurality of events to the sliding window events; removing, from the sliding window events, the filter-complying events to obtain a new set of sliding window events; and applying the function to the second plurality of events and the preliminary value(s) to obtain a new output result value, are then iteratively performed.