Fig. 2From: Using multiclass classification to automate the identification of patient safety incident reports by type and severityAn example of directed acyclic graph (DAG) for identifying severity level (SAC1: extreme risk; SAC2: high risk; SAC3: medium risk; SAC4: low risk): each node is a binary classifier for two levels of incidents. A decision of rejecting one of the two levels is made at each nodeBack to article page