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                            Library & Multimedia
 Predicting Recidivism with Neural Network Models
NCJ Number
              305038

Author(s)
          Sara Debus-Sherrill;
                        Colin Sherrill
Date Published

August 2021
Length
              14 pages
Annotation
              This is “Team Sherrill’s” report in its participation in the National Institute of Justice’s (NIJ’s) Recidivism Forecasting Challenge, which sought to identify promising approaches to predicting recidivism for a sample of people on parole in Georgia.
Abstract
              The performance metrics for the competition prioritized both accuracy and reduced racial bias for awarding winners. Team Sherrill used deep neural network (DNN) machine learning to build models for reducing recidivism with the provided data. This approach was selected because neural networks learn from the data provided in contrast to being limited to the team’s existing knowledge, and it can be trained to minimize cross-entropy and other selected loss functions, enabling the modeling of complex and nonlinear relationships. They also facilitate building models with interaction effects such as those related to gender and racial differences. To assess model performance, the team used a few different metrics. Validity was measured using the Brier score. Racial bias was assessed through a “fair and accurate” method that accounted for disparate false positive rates between races, as well as overall model accuracy.
      
  
          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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