Friday, July 21, 2017

How Strategic is Chicago's "Strategic Subjects List"?
"For the past four years, the Chicago Police Department has been working with researchers to build a system for judging which city residents are most likely to be involved in a shooting — either pulling the trigger, or getting shot. The resulting 'heat list' — officially called the Strategic Subjects List (SSL) — has, for the most part, been shrouded in secrecy and speculation. What we’ve known is that everyone on the list gets a risk score, reflecting their predicted likelihood of being involved in a shooting.

The list is, to our knowledge, the highest-profile person-based predictive policing system in use across the United States. Perhaps that’s why it has attracted significant press attention — often including overstated comparisons to Minority Report — even though little is known about how it works. Most predictive policing systems fielded by major U.S police departments today are 'place-based,' meaning they attempt to forecast when and where future crime may occur. Chicago’s system, by contrast, tries to forecast who will be involved."

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