Figure 2
The line graph displays four performance measures over time from 2015 quarter 2 to 2017 quarter 4. The x axis represents the time periods in quarters from 2015 quarter 2 to 2017 quarter 4. The y axis represents the performance measures ranging from 0.9 to 1. The four performance measures are Accuracy, PPV, TPR, and Positive F 1. Accuracy is represented by a blue line, PPV by an orange line, TPR by a gray line, and Positive F 1 by a green line. The TPR and Positive F 1 lines start at approximately 0.98 and remain relatively constant throughout the period. The PPV line starts at approximately 0.98 and shows a slight decline over time. The Accuracy line starts at approximately 0.97 and shows a slight increase initially but then remains relatively constant. All values are approximated.Accuracy versus performance measures for the positive class