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Description Description
Ninety percent of all impaired driving trips are done by repeat offenders. Prior to arrest, an offender typically offends 80 to 2,000 times. A review of calls for services over a five-year period reveals a four-to-one ratio of impaired driving calls to actual offenses. In Saint John, almost 10% of impaired driving calls involve repeat vehicles.

Solution Solution
We can detect an actionable pattern highlighting a group of dangerous drivers after only two incidents. This map illustrates a pattern and may be used to strengthen articulable grounds, but not as a sole source.

Location Location
Saint John, New Brunswick

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Monthly Impaired Driving Activity and Repeat Target Vehicle
James Stewart at Saint John Police Force (New Brunswick)
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Description Description
Given scarce policing resources and a move towards working smarter with innovative tools and analytics, the Crime Analysis Unit at City of Riverside is providing information to support targeted policing strategies. One of the methods developed is the use of weighted hotspots derived from previous year crime data to identify “Hot” specific locations and “Hot” address blocks.

Solution Solution
This map presentation illustrates the weighted hotspots approach as applied to vehicle burglaries. Deliverables to Patrol and specialized units are the (i) Projected map overlaid with the target locations (ii) The heat charts for specific places and address blocks. Patrol officers and specialized units are now armed with information to support the targeted policing strategies. Crime Analysts have access to the data in excel to further analyze and routinely compare it to the current year's crime and advise if patterns remain consistent, if they change, and new patterns.

Location Location
Riverside, CA

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Vehicle Burglaries - Targeted Enforcement Using Weighted Hotspots
Prakah-Asante at Riverside PD (California)
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Description Description
The ‘anchor point’ model will query the specified window and run a density analysis with small search radius and small grid cell size. The raster output will be reclassified and peaks of the kernel density will be polygonized. The centroids of each polygon will be extracted and queried against a buffer of existing ‘anchor points’. These ‘anchor points’ will then be merged to a database of existing ‘anchor points’ for the tracked offender. A buffer will be drawn around each anchor point, and a data-mining procedure will sum offender tracks that fall within ‘anchor point’ buffers.

Solution Solution
This project serves to be valuable exploration while the path of GPS-tracking for parolees is still in its pilot phase. When an incident is within 3000 ft and 30 minutes of space and time that incident is flagged and included in a crime correlation report. This crime correlation report is delivered to crime analysis units, local detective units and the CDCR’s parole agent. Also reported is a system of exclusion zones. Local crime analysis units receive exclusion reports as well for flagging and discussion with parole agents.

Location Location
Redlands, CA

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Anchor Points and the Geographic Risk Matrix
Phil Mielke at Redlands PD (California)
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If you are an Omega Group client and have created an analytical map you would like to see displayed on our web site, please contact us at Gabriela@theomegagroup.com.