By concentrating on a particular city, careful manipulation of the "solved" selector demonstrate what kind of homicides are the most difficult to solve. Higher settings will produce more suspicious clusters, but also increase the odds that other factors influenced the failure rate of police investigations. The algorithm looks for clusters with very low solution rates.īy moving the "% Solved" slider, you can adjust the sensitivity of the search. The algorithm organizes more than 700,000 homicides into about 100,000 clusters by generating a unique Murder Group number based upon the geography (either county or metropolitan area), victims' gender and method of killing. The algorithm is based upon a reasonable premise - an active serial killer can reduce the normal (or expected) clearance rate for groups of similar victims killed through similar methods. This technique can be useful to police in detecting difficult-to-see patterns over a period of several years or longer. The Murder Accountability Project has developed an algorithm capable of detecting serial killers who target multiple victims using similar methods of killing within a specific geographic area.
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