*compStat (short for COMPuter STATistics or
COMParative STATistics)
*NYPD(New York City Police Department )
The data these commanders provide, including specific times and locations of crimes and enforcement activities, are forwarded to the NYPD's CompStat Unit where they are loaded into a city-wide database. The system analyzes the data and produces a weekly CompStat report on crime complaint and arrest activity at the precinct, patrol
borough, and city wide levels. The data are summarized by week, prior 30 days, and year-to-date for comparison with the previous year's activity and for establishing trends. The CompStat Unit also issues weekly commander profile reports to measure the performance of precinct commanders.
The weekly commander profile reports include information on the commander's date of appointment, years in rank, education and specialized training, most recent performance evaluation rating, the units that person previously commanded, the amount of overtime generated by police under that commander, absence rates, community demographics, and civilian complaints.
Using MapInfo geographic information system (GIS) software, the CompStat data can be displayed on maps showing crime and arrest locations, crime "hot spots," and other relevant information.
Comparative charts, tables, and graphs can also be projected Simultaneously. These visual presentations help precinct commanders and members of the NYPD's executive staff to quickly identify patterns and trends. Depending on the intelligence gleaned from the system, police chiefs and captains develop a targeted strategy for fighting crime, such as dispatching more foot patrols to high-crime neighborhoods, or issuing warnings to the public when a particular model of vehicle is susceptible to theft.
During Bratton's 27-month tenure, serious crime in New York dropped by 25 percent and homicides went down by 44 percent. Crime in New York City has dropped by 69 percent in the last 12 years. Skeptics do not b elieve that CompStat was responsible
for these results. They point to the decline in the number of young, poor men, an improved economy, programs that reduced welfare rolls while giving poor people access to better housing, increasing the size of the NYC police force, and giving precinct commanders more decision-making responsibility and accountability.
Nevertheless, Bratton, convinced that CompStat was the catalyst for New York's drop in crime, implemented the system in Los Angeles to further prove its worth. Since the introduction of CompStat, combined violent and property crimes in Los Angeles dropped for six consecutive years. Yet the ratio of police officers to residents is only
half that of New York and Chicago. CompStat has also been adopted in Philadelphia, Austin, San Francisco, Baltimore, and Vancouver, British Columbia.
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