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fix calls per minute for fraud_detection module #665

Merged
merged 1 commit into from Jan 12, 2016
Merged

fix calls per minute for fraud_detection module #665

merged 1 commit into from Jan 12, 2016

Commits on Jan 12, 2016

  1. fix calls per minute for fraud_detection module 

    Now the calls per minute parameter is build as consisting of an initial
time(t0) and a 60 seconds window(as was before). Each window slot holds the
calls received in that second(as before). The difference is that now
these parameters are updated based on three conditions:
* we receive the call between [t0; t0 + WINDOW_SIZE(60s)] - we only update
the number of calls for that slot(t0 + current time) and the calls per minute
parameter
* we receive the call in the interval of [t0+WINDOW_SIZE; t0+2*WINDOW_SIZE] -
we do the following: move t0 in current call time - WINDOW_SIZE, invalidate
all the calls we knew of from t0 to current t0 (current call time - WINDOW_SIZE)
* we receive a call after 2 * WINDOW_SIZE(60 seconds) + t0 - this invalidates
all the calls we knew of since the window is not does not contains calls newer
than the last 60 seconds;
    ionutrazvanionita committed Jan 12, 2016
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