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"'PredPol' or Predictive policing, in essence, is taking data from disparate sources, analyzing them and then using the results to anticipate, prevent and respond more effectively to future crime.
Predictive policing entails becoming less reactive. "The predictive vision moves law enforcement from focusing on what happened to focusing on what will happen and how to effectively deploy resources in front of crime, thereby changing outcomes," writes Charlie Beck, chief of the Los Angeles Police Department.[1]
Beck told participants that perhaps the greatest benefit to predictive policing is the discovery of new or previously unknown patterns and trends. Just as Walmart found increased demand for strawberry Pop-Tarts preceding major weather events, LAPD has found its own subtle patterns when examining data that have helped the department accurately anticipate and prevent crime.
Predictive policing is not meant to replace tried-and-true police techniques, symposium speakers explained. Instead, it borrows from the principles of problem-oriented policing, community policing, evidence-based policing, intelligence-led policing and other proven policing models."

Reference:
-http://www.nij.gov/journals/266/pages/predictive.aspx


For further information, please also visit the PredPol website:
http://www.predpol.com/about/