Table 1 Estimated MSE for different estimators at \(p=4\).
From: New two parameter hybrid estimator for zero inflated negative binomial regression models
\(\rho ^2\) | n | \(\hat{\beta }_{\text {MLE}}\) | \(\hat{\beta }_{{k}}\) | \(\hat{\beta }_{{d}}\) | \(\hat{\beta }_{{K}}\) | \(\hat{\beta }_{k_m,d_m}\) | \(\hat{\beta }_{k_*,d_*}\) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
- | \(\hat{k}_1\) | \(\hat{k}_2\) | \(\hat{k}_3\) | \(\hat{d}\) | \(\hat{K}_1\) | \(\hat{K}_2\) | \(\hat{k_m}_1\) | \(\hat{k_m}_2\) | \(\hat{k_*}_1\) | \(\hat{k_*}_2\) | \(\hat{k_*}_3\) | \(\hat{k_*}_4\) | ||
0.75 | 30 | 0.44308 | 0.38584 | 0.39322 | 0.39899 | 0.39185 | 0.35915 | 0.36792 | 0.35900 | 0.37514 | 0.34791 | 0.34897 | 0.34866 | 0.34748 |
75 | 0.12214 | 0.11747 | 0.11831 | 0.11867 | 0.11851 | 0.11157 | 0.11414 | 0.11194 | 0.11525 | 0.10988 | 0.11051 | 0.11035 | 0.10981 | |
150 | 0.04693 | 0.04587 | 0.04608 | 0.04642 | 0.04619 | 0.04510 | 0.04565 | 0.04512 | 0.04589 | 0.04462 | 0.04502 | 0.04488 | 0.04479 | |
200 | 0.04052 | 0.03976 | 0.03991 | 0.04012 | 0.03996 | 0.03901 | 0.03948 | 0.03902 | 0.03962 | 0.03857 | 0.03884 | 0.03872 | 0.03862 | |
300 | 0.03228 | 0.03182 | 0.03191 | 0.03202 | 0.03193 | 0.03128 | 0.03160 | 0.03128 | 0.03169 | 0.03098 | 0.03118 | 0.03109 | 0.03103 | |
400 | 0.02787 | 0.02753 | 0.02760 | 0.02770 | 0.02762 | 0.02718 | 0.02741 | 0.02719 | 0.02748 | 0.02698 | 0.02715 | 0.02709 | 0.02706 | |
500 | 0.02244 | 0.02221 | 0.02226 | 0.02230 | 0.02228 | 0.02192 | 0.02208 | 0.02192 | 0.02214 | 0.02179 | 0.02190 | 0.02187 | 0.02185 | |
0.80 | 30 | 0.50990 | 0.42551 | 0.43571 | 0.44551 | 0.41681 | 0.41529 | 0.41699 | 0.39739 | 0.41459 | 0.38712 | 0.38514 | 0.38330 | 0.38658 |
75 | 0.17120 | 0.15958 | 0.16156 | 0.16130 | 0.16179 | 0.15024 | 0.15239 | 0.15015 | 0.15429 | 0.14796 | 0.14756 | 0.14797 | 0.14753 | |
150 | 0.07589 | 0.07443 | 0.07470 | 0.07480 | 0.07469 | 0.07281 | 0.07347 | 0.07281 | 0.07386 | 0.07228 | 0.07232 | 0.07232 | 0.07217 | |
200 | 0.05872 | 0.05802 | 0.05814 | 0.05818 | 0.05816 | 0.05764 | 0.05770 | 0.05761 | 0.05780 | 0.05756 | 0.05738 | 0.05748 | 0.05744 | |
300 | 0.04439 | 0.04421 | 0.04423 | 0.04423 | 0.04421 | 0.04440 | 0.04421 | 0.04437 | 0.04419 | 0.04451 | 0.04430 | 0.04441 | 0.04443 | |
400 | 0.03400 | 0.03386 | 0.03388 | 0.03391 | 0.03389 | 0.03379 | 0.03381 | 0.03378 | 0.03383 | 0.03376 | 0.03375 | 0.03375 | 0.03374 | |
500 | 0.03419 | 0.03419 | 0.03419 | 0.03419 | 0.03417 | 0.03428 | 0.03422 | 0.03427 | 0.03420 | 0.03431 | 0.03426 | 0.03428 | 0.03429 | |
0.85 | 30 | 1.36298 | 0.89763 | 0.95909 | 1.00094 | 0.81848 | 0.64836 | 0.74355 | 0.65870 | 0.81531 | 0.48711 | 0.50397 | 0.49652 | 0.48176 |
75 | 0.28787 | 0.25154 | 0.25711 | 0.25441 | 0.25943 | 0.22529 | 0.23027 | 0.22510 | 0.23563 | 0.21989 | 0.21980 | 0.21926 | 0.21894 | |
150 | 0.11730 | 0.11376 | 0.11435 | 0.11407 | 0.11418 | 0.11158 | 0.11152 | 0.11114 | 0.11184 | 0.11111 | 0.11022 | 0.11062 | 0.11062 | |
200 | 0.11313 | 0.11120 | 0.11136 | 0.11098 | 0.11075 | 0.11558 | 0.11198 | 0.11392 | 0.11067 | 0.11594 | 0.11518 | 0.11541 | 0.11635 | |
300 | 0.07902 | 0.07910 | 0.07903 | 0.07874 | 0.07870 | 0.08012 | 0.07913 | 0.07992 | 0.07881 | 0.08084 | 0.07999 | 0.08043 | 0.08066 | |
400 | 0.05662 | 0.05675 | 0.05671 | 0.05664 | 0.05662 | 0.05749 | 0.05698 | 0.05744 | 0.05682 | 0.05785 | 0.05755 | 0.05770 | 0.05780 | |
500 | 0.05053 | 0.05087 | 0.05078 | 0.05072 | 0.05070 | 0.05176 | 0.05122 | 0.05172 | 0.05102 | 0.05214 | 0.05190 | 0.05202 | 0.05214 | |
0.90 | 30 | 1.51189 | 0.93972 | 0.98955 | 1.02680 | 0.84307 | 0.73272 | 0.81599 | 0.73177 | 0.87227 | 0.56618 | 0.56984 | 0.57218 | 0.55666 |
75 | 0.34944 | 0.30671 | 0.31370 | 0.31153 | 0.31067 | 0.27768 | 0.28296 | 0.27313 | 0.28831 | 0.26592 | 0.26362 | 0.26556 | 0.26481 | |
150 | 0.20930 | 0.19873 | 0.20045 | 0.19906 | 0.19839 | 0.19171 | 0.19157 | 0.18966 | 0.19205 | 0.19018 | 0.18845 | 0.18935 | 0.18985 | |
200 | 0.14332 | 0.13771 | 0.13858 | 0.13760 | 0.13733 | 0.13783 | 0.13513 | 0.13588 | 0.13451 | 0.13778 | 0.13665 | 0.13724 | 0.13820 | |
300 | 0.08813 | 0.08801 | 0.08795 | 0.08764 | 0.08756 | 0.09001 | 0.08831 | 0.08959 | 0.08781 | 0.09098 | 0.09004 | 0.09052 | 0.09095 | |
400 | 0.06828 | 0.06797 | 0.06799 | 0.06779 | 0.06780 | 0.06840 | 0.06777 | 0.06826 | 0.06760 | 0.06884 | 0.06822 | 0.06853 | 0.06868 | |
500 | 0.05390 | 0.05421 | 0.05411 | 0.05398 | 0.05395 | 0.05546 | 0.05459 | 0.05535 | 0.05429 | 0.05603 | 0.05564 | 0.05582 | 0.05603 | |
0.95 | 30 | 2.29854 | 1.35261 | 1.46141 | 1.58068 | 1.14130 | 1.05275 | 1.19021 | 1.01046 | 1.26688 | 0.76244 | 0.77802 | 0.74064 | 0.76827 |
75 | 0.68086 | 0.51535 | 0.53827 | 0.53300 | 0.50938 | 0.43267 | 0.45060 | 0.42395 | 0.46422 | 0.39987 | 0.40094 | 0.39941 | 0.40202 | |
150 | 0.35349 | 0.32114 | 0.32634 | 0.32390 | 0.31641 | 0.30883 | 0.30662 | 0.29977 | 0.30681 | 0.29834 | 0.29651 | 0.29809 | 0.29982 | |
200 | 0.27554 | 0.24943 | 0.25380 | 0.25076 | 0.24552 | 0.23323 | 0.23328 | 0.22736 | 0.23487 | 0.22436 | 0.22194 | 0.22394 | 0.22453 | |
300 | 0.16667 | 0.16096 | 0.16178 | 0.16034 | 0.16036 | 0.16209 | 0.15820 | 0.15952 | 0.15715 | 0.16207 | 0.16062 | 0.16121 | 0.16241 | |
400 | 0.13825 | 0.13530 | 0.13574 | 0.13461 | 0.13439 | 0.13474 | 0.13288 | 0.13369 | 0.13243 | 0.13546 | 0.13397 | 0.13485 | 0.13552 | |
500 | 0.10661 | 0.10480 | 0.10507 | 0.10442 | 0.10456 | 0.10404 | 0.10315 | 0.10373 | 0.10303 | 0.10467 | 0.10400 | 0.10440 | 0.10480 | |
0.99 | 30 | 11.50245 | 5.05042 | 5.68675 | 6.80942 | 5.36599 | 3.52580 | 4.40813 | 3.34442 | 4.91570 | 1.79210 | 2.11458 | 1.56982 | 1.92570 |
75 | 3.64498 | 2.03184 | 2.22698 | 2.38105 | 1.39184 | 1.39650 | 1.65977 | 1.36370 | 1.82433 | 0.81477 | 0.85913 | 0.77164 | 0.83100 | |
150 | 1.66971 | 1.05731 | 1.13964 | 1.14508 | 0.91089 | 0.74035 | 0.83638 | 0.73997 | 0.91201 | 0.58769 | 0.59223 | 0.58783 | 0.59235 | |
200 | 1.22108 | 0.85660 | 0.90882 | 0.91784 | 0.75696 | 0.67810 | 0.73533 | 0.65532 | 0.76800 | 0.57268 | 0.57575 | 0.57405 | 0.58185 | |
300 | 0.82337 | 0.61190 | 0.64414 | 0.64134 | 0.56620 | 0.50146 | 0.52840 | 0.48330 | 0.54827 | 0.43369 | 0.43309 | 0.43528 | 0.43754 | |
400 | 0.62095 | 0.51398 | 0.53121 | 0.52278 | 0.50106 | 0.44333 | 0.45418 | 0.43229 | 0.46775 | 0.41512 | 0.41293 | 0.41505 | 0.41612 | |
500 | 0.44551 | 0.37674 | 0.38792 | 0.37936 | 0.36908 | 0.33915 | 0.33823 | 0.32629 | 0.34241 | 0.32198 | 0.31936 | 0.32142 | 0.32418 | |