Crime Hotspot
Definition
A small geographic area where crime incidents cluster at a rate significantly higher than surrounding areas over a defined time period. Hotspot identification is typically done using kernel density estimation or spatial autocorrelation statistics applied to address-level crime data in a GIS platform.
- Definition
- Small area with crime rate significantly above surrounding areas
- Method
- Kernel density estimation or spatial autocorrelation
- Data used
- Address-level crime data
- Platform
- GIS software
Common questions
Why is kernel density estimation preferred over simply counting incidents per grid cell?+
Kernel density smooths point data into a continuous surface so hotspots do not appear or disappear based on arbitrary grid boundaries, giving a more stable picture of where incidents actually concentrate.
What is a hotspot analysis typically used for once it identifies a cluster?+
Police agencies use it to allocate patrol resources and target crime prevention interventions to the specific area and time window where the concentration is statistically significant, rather than spreading resources evenly.
Related terms
- CompStat
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- Dark Figure of Crime
- The gap between the actual volume of crime and the amount recorded in official statistics. Crimes go unrecorded when victims do not...
- Geographic Information System (GIS)
- Software that stores, analyses, and visualises data tied to geographic coordinates. In crime analysis, GIS platforms such as ArcGIS or the open-source...
- Recording Rate
- The proportion of crimes known to police that are formally entered into official statistics. Recording rates below 100% produce a secondary dark...
- Victimisation Survey
- A survey that asks a random population sample about crimes experienced in a reference period, regardless of whether those incidents were reported...