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Several of us are noting the less than 5% success rate in finding definitive evidence of shots fired, and calling the tech a failure. I disagree, because of th
by Communitivity 3y ago
Several of us are noting the less than 5% success rate in finding definitive evidence of shots fired, and calling the tech a failure.
I disagree, because of the importance of preventing active shooters. With this kind of system you are going to want to lean toward false positives vs false negatives.
There is definitely a lot of room for improvement though. Improvement could come through better ML use/training, better sensors, and better human in the loop analysts.
I am firmly with Benjamin Franklin, in that "Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety.". But Franklin himself was in favor of collective security, and Franklin said this in support of the state's authority to provide collective security ( https://www.npr.org/2015/03/02/390245038/ben-franklins-famous-liberty-safety-quote-lost-its-context-in-21st-century https://www.npr.org/2015/03/02/390245038/ben-franklins-famou... ). Also, these sensors monitor public spaces, where no expectation of privacy exists.
So I am for more sensors, video cameras on the sensors, more ML on the sensor data, and better training for analysts, but I am also for complete transparency on where sensors are and how they are used, with a publicly released report from annual external party review of police conduct in the use or abuse of sensor data.
- wl 3y agoSeveral people are misinterpreting a Chicago Inspector General report that examined call disposition records on ShotSpotter alerts and found approximately 10% were coded with dispositions indicating a firearms offense. The misinterpretation is conflating this with a false positive rate of 90%, never mind that the police are disincentivized to thoroughly search for shell casings rather than just moving on to the next call if there are no victims, shooters, witnesses, or any other obvious evidence of a shooting on scene. It implies, at best, a rough lower bound on the false positive rate. Additionally, the author of this article is claiming the police in Albuquerque have suggested to him that when they send forensics teams to the site of detected shootings, they "find definitive evidence of actual shots fired in less than five percent of cases." This would be at least twice as bad as the rough lower bound suggested by the Chicago Inspector General report and seems way out of line with other experiences I've heard.