CPC G08B 29/188 (2013.01) [G07C 5/008 (2013.01); G08B 21/10 (2013.01); G08B 31/00 (2013.01); H04L 12/1895 (2013.01); H04L 67/04 (2013.01); H04L 67/10 (2013.01); H04L 67/12 (2013.01); H04M 1/72421 (2021.01); H04M 11/04 (2013.01); H04W 4/02 (2013.01); H04W 4/029 (2018.02); H04W 4/90 (2018.02); G08B 17/00 (2013.01); G08B 27/005 (2013.01); H04L 51/02 (2013.01); H04M 2250/12 (2013.01); H04W 4/14 (2013.01); H04W 76/50 (2018.02)] | 18 Claims |
1. A method comprising:
detecting anomalous call clusters of emergency calls in a call data stream during a time interval within geographic boundaries;
determining a maximum likelihood ratio from a series of likelihood ratios during the time interval for each incoming call contained in the call data stream;
performing a multiple probability simulation and determining a second likelihood ratio for shuffled call data obtained from the multiple probability simulation;
providing an output defining the anomalous call cluster to an emergency management system based on the second likelihood ratio exceeding a threshold;
providing a digital map comprising anomalous call cluster information for detected anomalous call clusters; and
displaying the anomalous call cluster information on the digital map displayed by the emergency management system.
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