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                            Library & Multimedia
 Predicting Recidivism Fairly: A Machine Learning Application Using Contextual and Individual Data
NCJ Number
              305036

Author(s)
          Eric L. Sevigny;
                        Thaddeus L. Johnson;
                        Jared A. Greathouse
Date Published

August 2021
Length
              31 pages
Annotation
              This report documents the efforts of a “Small Team’s” participation in the U.S, Justice Department’s National Institute of Justice’s (NIJ’s) “Forecasting Recidivism Challenge,” whose goal is to accelerate technical and substantive knowledge on predicting recidivism risk.
Abstract
              As part of this competition, NIJ released data on Georgia parolees in three stages and challenged researchers to predict recidivism during the 1-year, 2-year, and 3-year periods following release from custody. The competition was judged on overall accuracy (Brier Score) and a combined measure of accuracy and fairness. There has been criticism that risk prediction will be unfair to racial minorities having higher risk prediction attributed to race, because statistics indicate Blacks are more likely to commit offenses than White persons. The competition thus emphasizes that race in itself must not be considered a criminogenic factor. Rather, criminogenic factors more likely to be prevalent among Blacks must be isolated in measuring crime risk for Whites as well as Blacks. This report constitutes the efforts of a self-identified “Small Team,” that acknowledges they are not machine learning scholars, but rather as a group of applied statisticians and researchers with experience in predictive analysis and risk assessment. As a result, the team focused only variables that contributed most to criminal behavior. A concluding comment, however, is that “these risk assessment tools attempt to predict future behavior, and that behavior is likely to be influenced by numerous contextual factors and future life events that are unknown and uncertain. Thus, these models are not likely to ever be highly accurate.”
      
  
          Additional Details
Grant Number(s)
        NIJ Recidivism Forecasting Challenge Winning Paper


  
  
        
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        NIJ-Sponsored


  
  
        
  Publication Type
        Research (Applied/Empirical)
    
  
  
Date Published: August 1, 2021
    
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