Officer Age II

CODE: GitHub
DATATYPE: police officers
SOURCE: departmental records
YEARS: 2014
SIZE: 18,000 (approx.)
SUBSET: training set
VIZTYPE: lift-pull plot
FEATURES: officer age
PROJECT: Wintour: Visualizing Predictive Models

This is a lift-pull plot of officer age. Lift-pull plots show the binwise deviation from the global ratio of positive to negative examples in a training or test set. If a bin has considerable lift, officers in that bin are disproportionately high risk. If a bin has considerable pull, they are disproportionately low risk. Lift-pull plots offer a concise look at the degree to which a given feature helps the model distinguish between classes. We can see that older officers tend to be lower risk than younger officers.