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Criminology Commons

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Crime mapping

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Full-Text Articles in Criminology

Environmental Factors Influencing Urban Homicide Clearance Rates: A Spatial Analysis Of New York City, Leslie W. Kennedy, Joel M. Caoplan, Eric L. Piza, Amanda L. Thomas Nov 2020

Environmental Factors Influencing Urban Homicide Clearance Rates: A Spatial Analysis Of New York City, Leslie W. Kennedy, Joel M. Caoplan, Eric L. Piza, Amanda L. Thomas

Publications and Research

In this paper, we explore the conditions under which clearance rates improve by looking at the experience across New York City. Using one agency provides a control on the administrative differences that appear across other jurisdictions that have been studied, usually through cross-national analysis. Our analysis uses Risk Terrain Modeling (RTM) to identify environmental features that relate to closed versus open homicide cases using two years of New York City Police Department (NYPD) data. This analysis is supplemented with an investigation of precinct-wide social structure variables to examine how context matters in influencing closure rates.


Risk Terrain Modeling For Spatial Risk Assessment., Joel M. Caplan, Leslie W. Kennedy, Jeremy D. Barnum, Eric L. Piza Jan 2015

Risk Terrain Modeling For Spatial Risk Assessment., Joel M. Caplan, Leslie W. Kennedy, Jeremy D. Barnum, Eric L. Piza

Publications and Research

Spatial factors can influence the seriousness and longevity of crime problems. Risk terrain modeling (RTM) identifies the spatial risks that come from features of a landscape and models how they colocate to create unique behavior settings for crime. The RTM process begins by testing a variety of factors thought to be geographically related to crime incidents. Valid factors are selected and then weighted to produce a final model that basically paints a picture of places where crime is statistically most likely to occur. This article addresses crime as the outcome event, but RTM can be applied to a variety of …