Crime Hot Spots Analysis in Cincinnati

Crime Hot Spots in Cincinnati Tianyi Zhang

Study Area – Cincinnati

Research Questions • What types of crime happened the most frequent in Cincinnati in 2015? • Where are these crimes clustered, and how they evolved over time?

Data • 2015 Cincinnati crime records from the Cincinnati Police Dept.

• Cincinnati city boundary and neighborhood boundaries from CAGIS • Address locator from CAGIS

Tools & Techniques • Geocoding • Emerging hot spots analysis

Result: Geocoded Crimes

Result: Types of Crime

Emerging Hot Spots Analysis

1 week 0.25 mile

1 week

0.25 mile

0.25 mile 0.51 mile

Interpretations of the Hot Spots • New hot spot: a statistically significant hot spot for the final time step (last 2 weeks of 2015) and has never been a statistically significant hot spot before • Intensifying hot spot: a location that has been a statistically significant hot spot for 90% of the timestep intervals, including the final time step, with the intensity increasing continuously • Diminishing hot spot: a location that has been a statistically significant hot spot for 90% of the timestep intervals, including the final time step, with the intensity decreasing continuously • Persistent hot spot: a location that has been a statistically significant hot spot for ninety percent of the time-step intervals with no increasing or decreasing trend • Sporadic hot spot: a location that is an on-again then off-again hot spot • Historic hot spot: The most recent time period is not hot, but at least ninety percent of the time-step intervals have been statistically significant hot spots

Result: Theft & Burglary Hot Spots

Result: Robbery Hot Spots

Result: Trespassing Hot Spots

Result: Assault & Homicide Hot Spots

Final Remarks • This study could be helpful as a reference for the Cincinnati Police Dept. when allocating their police power • Further research could be based on the result of this study • This study could be improved by using data that has a longer timeframe