Table 10 MAE values of regression models fitted on data generated with ZIP regression model
Sample Size | Proportion of Zeros | Poisson | NB | ZIP | ZINB |
|---|---|---|---|---|---|
50 | 0.1 | 1.2051 | 1.2175 | 1.2041 | 1.2056 |
0.3 | 3.1300 | 3.1366 | 3.1202 | 3.1296 | |
0.5 | 5.2026 | 5.2005 | 5.1954 | 5.1954 | |
0.7 | 7.2560 | 7.2425 | 7.2506 | 7.2345 | |
200 | 0.1 | 1.0618 | 1.0624 | 1.0616 | 1.0638 |
0.3 | 3.1064 | 3.1057 | 3.1061 | 3.1059 | |
0.5 | 5.1843 | 5.1827 | 5.1841 | 5.1791 | |
0.7 | 7.2264 | 7.2231 | 7.2261 | 7.2265 | |
600 | 0.1 | 1.0350 | 1.0350 | 1.0348 | 1.0347 |
0.3 | 3.1078 | 3.1078 | 3.1078 | 3.1104 | |
0.5 | 5.1784 | 5.1784 | 5.1786 | 5.1814 | |
0.7 | 7.2242 | 7.2238 | 7.2241 | 7.2256 | |
1000 | 0.1 | 1.0299 | 1.0298 | 1.0297 | 1.0301 |
0.3 | 3.0995 | 3.0994 | 3.0995 | 3.1000 | |
0.5 | 5.1630 | 5.1628 | 5.1630 | 5.1633 | |
0.7 | 7.2381 | 7.2378 | 7.2380 | 7.2381 |