NYPD Creates Pattern Recognition Software

The software, aka Patternizr, allows crime analysts stationed in each of the department’s 77 precincts to compare robberies, larcenies and thefts to hundreds of thousands of crimes logged in the NYPD’s database, transforming their hunt for crime patterns with the click of a button. Rebecca Shutt,(in photo) who works in the New York Police Department’s Office of Crime Control Strategies, speaks in New York. Shutt utilizes a software called Patternizr, which allows crime analysts to compare robbery, larceny and theft incidents to the millions of crimes logged in the NYPD’s database, aiding their hunt for crime patterns. (Photo: Mark Lennihan, AP)
Claimed to be much faster than the old method, which involved analysts sifting through reports, racking their brains for key details about various crimes and deciding whether they fit into a pattern. It’s more comprehensive, too, with analysts able to spot patterns across the city instead of just in their precinct.
The department disclosed its use of the technology only this month, with Levine and Chohlas-Wood detailing their work in the INFORMS Journal on Applied Analytics in an article alerting other departments how they could create similar software. Speaking about it with the news media for the first time, they told The Associated Press recently that theirs is the first police department in the country to use a pattern-recognition tool like this.
“The goal of Patternizr, is to improve public safety,” said Levine, an astrophysicist by academic training. “The more easily that we can identify patterns in those crimes, the more quickly we can identify and apprehend perpetrators.”
Levine and Chohlas-Wood were inspired by the work of a New York University team that studied a similar approach to pattern recognition but never produced a workable version.
The two trained the program on 10 years of patterns that the department had manually identified. In testing, it accurately re-created old crime patterns one-third of the time and returned parts of patterns 80 percent of the time. The NYPD says the cost was minimal because the two developers were already on staff.




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