Table 5. Metrics for temporal methods for citywide injects at specificity 0.95.
Small sized injects (1 SD) | Medium sized injects (2 SD) | Large sized injects (3 SD) | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Sens | PPV | Time | Sens | PPV | Time | Sens | PPV | Time | ||
ARIMA | Single day spike | 0.20 | 0.01 | N/A | 0.55 | 0.02 | N/A | 0.95 | 0.03 | N/A |
C2 | 0.20 | 0.01 | N/A | 0.55 | 0.02 | N/A | 0.75 | 0.02 | N/A | |
CUSUM | 0.00 | 0.00 | N/A | 0.00 | 0.00 | N/A | 0.10 | 0.01 | N/A | |
GLM | 0.00 | 0.00 | N/A | 0.45 | 0.01 | N/A | 0.75 | 0.02 | N/A | |
HW | 0.30 | 0.01 | N/A | 0.65 | 0.02 | N/A | 0.95 | 0.03 | N/A | |
TSS | 0.05 | 0.01 | N/A | 0.20 | 0.01 | N/A | 0.35 | 0.01 | N/A | |
ARIMA | Point source | 0.38 | 0.01 | 0.70 | 0.33 | 0.01 | 0.84 | 0.65 | 0.02 | 0.72 |
C2 | 0.28 | 0.01 | 0.68 | 0.32 | 0.01 | 0.68 | 0.52 | 0.03 | 0.63 | |
CUSUM | 0.07 | 0.01 | 1.00 | 0.03 | 0.01 | 0.83 | 0.13 | 0.05 | 0.63 | |
GLM | 0.23 | 0.01 | 0.83 | 0.28 | 0.02 | 0.83 | 0.45 | 0.03 | 0.67 | |
HW | 0.27 | 0.01 | 0.69 | 0.33 | 0.02 | 0.78 | 0.67 | 0.02 | 0.73 | |
TSS | 0.22 | 0.02 | 0.78 | 0.27 | 0.01 | 0.54 | 0.28 | 0.02 | 0.57 | |
ARIMA | Propagated | 0.45 | 0.02 | 0.61 | 0.40 | 0.02 | 0.51 | 0.55 | 0.03 | 0.51 |
C2 | 0.40 | 0.02 | 0.66 | 0.30 | 0.01 | 0.45 | 0.50 | 0.02 | 0.46 | |
CUSUM | 0.20 | 0.04 | 0.88 | 0.05 | 0.03 | 0.29 | 0.15 | 0.06 | 0.73 | |
GLM | 0.15 | 0.02 | 0.59 | 0.25 | 0.01 | 0.70 | 0.35 | 0.03 | 0.72 | |
HW | 0.45 | 0.02 | 0.69 | 0.55 | 0.02 | 0.67 | 0.65 | 0.03 | 0.59 | |
TSS | 0.25 | 0.02 | 0.67 | 0.45 | 0.03 | 0.70 | 0.55 | 0.04 | 0.51 |