Table 2 Estimated MSE for different estimators at \(p=7\).
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 | 0.69991 | 0.50896 | 0.52847 | 0.55575 | 0.59200 | 0.44104 | 0.47210 | 0.44363 | 0.49596 | 0.42466 | 0.43433 | 0.42785 | 0.42483 |
75 | 0.20350 | 0.18563 | 0.18890 | 0.19499 | 0.19515 | 0.17671 | 0.18369 | 0.17781 | 0.18777 | 0.17398 | 0.17678 | 0.17528 | 0.17465 | |
150 | 0.07626 | 0.07340 | 0.07397 | 0.07490 | 0.07503 | 0.07135 | 0.07283 | 0.07143 | 0.07355 | 0.07078 | 0.07128 | 0.07103 | 0.07092 | |
200 | 0.05730 | 0.05584 | 0.05613 | 0.05664 | 0.05661 | 0.05488 | 0.05562 | 0.05490 | 0.05594 | 0.05454 | 0.05483 | 0.05469 | 0.05464 | |
300 | 0.04345 | 0.04270 | 0.04285 | 0.04316 | 0.04309 | 0.04235 | 0.04269 | 0.04235 | 0.04285 | 0.04217 | 0.04233 | 0.04226 | 0.04224 | |
400 | 0.04168 | 0.04115 | 0.04126 | 0.04146 | 0.04142 | 0.04081 | 0.04109 | 0.04081 | 0.04120 | 0.04068 | 0.04079 | 0.04074 | 0.04072 | |
500 | 0.03072 | 0.03018 | 0.03029 | 0.03050 | 0.03049 | 0.02985 | 0.03013 | 0.02985 | 0.03026 | 0.02974 | 0.02985 | 0.02981 | 0.02980 | |
0.80 | 30 | 1.98095 | 0.99922 | 1.08305 | 1.27448 | 1.17830 | 0.83445 | 0.94965 | 0.81011 | 1.02438 | 0.63927 | 0.68524 | 0.66576 | 0.64191 |
75 | 0.36635 | 0.31053 | 0.31974 | 0.33361 | 0.33648 | 0.27921 | 0.29682 | 0.28317 | 0.31015 | 0.27284 | 0.27889 | 0.27541 | 0.27353 | |
150 | 0.11033 | 0.10479 | 0.10580 | 0.10778 | 0.10799 | 0.10255 | 0.10445 | 0.10268 | 0.10560 | 0.10175 | 0.10245 | 0.10214 | 0.10198 | |
200 | 0.09588 | 0.09253 | 0.09318 | 0.09464 | 0.09448 | 0.09159 | 0.09283 | 0.09165 | 0.09350 | 0.09099 | 0.09155 | 0.09133 | 0.09124 | |
300 | 0.07665 | 0.07556 | 0.07573 | 0.07609 | 0.07606 | 0.07521 | 0.07546 | 0.07519 | 0.07564 | 0.07505 | 0.07514 | 0.07509 | 0.07507 | |
400 | 0.05276 | 0.05233 | 0.05241 | 0.05259 | 0.05254 | 0.05223 | 0.05237 | 0.05222 | 0.05244 | 0.05214 | 0.05222 | 0.05219 | 0.05218 | |
500 | 0.04149 | 0.04104 | 0.04113 | 0.04134 | 0.04130 | 0.04094 | 0.04111 | 0.04094 | 0.04119 | 0.04085 | 0.04093 | 0.04090 | 0.04089 | |
0.85 | 30 | 3.84788 | 1.76536 | 1.94178 | 2.41787 | 1.82943 | 1.48424 | 1.74446 | 1.42689 | 1.91005 | 0.83221 | 0.98513 | 0.90582 | 0.84974 |
75 | 0.68886 | 0.54599 | 0.56815 | 0.59431 | 0.59033 | 0.46415 | 0.50273 | 0.47126 | 0.53485 | 0.44142 | 0.45592 | 0.44730 | 0.44236 | |
150 | 0.24446 | 0.22100 | 0.22511 | 0.23165 | 0.23259 | 0.20749 | 0.21581 | 0.20873 | 0.22148 | 0.20432 | 0.20691 | 0.20541 | 0.20458 | |
200 | 0.17980 | 0.16564 | 0.16763 | 0.17128 | 0.17357 | 0.16164 | 0.16358 | 0.16091 | 0.16575 | 0.15970 | 0.16028 | 0.15990 | 0.15968 | |
300 | 0.10073 | 0.09801 | 0.09841 | 0.09912 | 0.09941 | 0.09692 | 0.09745 | 0.09687 | 0.09794 | 0.09666 | 0.09673 | 0.09667 | 0.09663 | |
400 | 0.08667 | 0.08599 | 0.08605 | 0.08616 | 0.08619 | 0.08577 | 0.08574 | 0.08572 | 0.08582 | 0.08575 | 0.08569 | 0.08571 | 0.08571 | |
500 | 0.07284 | 0.07248 | 0.07251 | 0.07259 | 0.07259 | 0.07233 | 0.07235 | 0.07231 | 0.07239 | 0.07230 | 0.07227 | 0.07227 | 0.07226 | |
0.90 | 30 | 4.78585 | 2.08616 | 2.30661 | 2.90847 | 2.02541 | 1.75045 | 2.07171 | 1.65495 | 2.26476 | 0.88559 | 1.08654 | 0.96610 | 0.90294 |
75 | 0.93841 | 0.68711 | 0.72342 | 0.77231 | 0.74958 | 0.56831 | 0.62690 | 0.57425 | 0.67452 | 0.52121 | 0.54456 | 0.53072 | 0.52226 | |
150 | 0.35260 | 0.29366 | 0.30354 | 0.31546 | 0.32266 | 0.25428 | 0.27371 | 0.25879 | 0.28906 | 0.24858 | 0.25348 | 0.25045 | 0.24840 | |
200 | 0.19710 | 0.17851 | 0.18160 | 0.18603 | 0.18905 | 0.16808 | 0.17348 | 0.16903 | 0.17775 | 0.16672 | 0.16784 | 0.16719 | 0.16668 | |
300 | 0.17073 | 0.16133 | 0.16303 | 0.16563 | 0.16574 | 0.15518 | 0.15893 | 0.15563 | 0.16122 | 0.15379 | 0.15486 | 0.15415 | 0.15381 | |
400 | 0.10594 | 0.10380 | 0.10417 | 0.10477 | 0.10477 | 0.10256 | 0.10330 | 0.10258 | 0.10375 | 0.10222 | 0.10241 | 0.10226 | 0.10219 | |
500 | 0.10394 | 0.10272 | 0.10286 | 0.10303 | 0.10309 | 0.10219 | 0.10223 | 0.10211 | 0.10241 | 0.10214 | 0.10204 | 0.10206 | 0.10206 | |
0.95 | 30 | 11.96859 | 4.21530 | 4.75492 | 6.40227 | 4.01699 | 3.87010 | 4.55333 | 3.38113 | 4.81050 | 1.20543 | 1.42837 | 1.20811 | 1.21948 |
75 | 1.58428 | 0.99674 | 1.06024 | 1.16623 | 1.13923 | 0.86345 | 0.94033 | 0.83739 | 0.99170 | 0.75266 | 0.78550 | 0.76570 | 0.75589 | |
150 | 0.60666 | 0.46567 | 0.48799 | 0.50856 | 0.51980 | 0.37108 | 0.41000 | 0.38188 | 0.44600 | 0.35800 | 0.36823 | 0.36179 | 0.35743 | |
200 | 0.49058 | 0.41837 | 0.42962 | 0.44332 | 0.44185 | 0.38555 | 0.39953 | 0.38175 | 0.41245 | 0.37204 | 0.37673 | 0.37394 | 0.37243 | |
300 | 0.25344 | 0.22608 | 0.23013 | 0.23523 | 0.24109 | 0.21342 | 0.21775 | 0.21331 | 0.22315 | 0.21155 | 0.21201 | 0.21164 | 0.21130 | |
400 | 0.18672 | 0.17378 | 0.17599 | 0.17890 | 0.18045 | 0.16517 | 0.16950 | 0.16586 | 0.17276 | 0.16413 | 0.16492 | 0.16439 | 0.16402 | |
500 | 0.16636 | 0.15892 | 0.16014 | 0.16143 | 0.16188 | 0.15387 | 0.15595 | 0.15392 | 0.15758 | 0.15302 | 0.15333 | 0.15305 | 0.15287 | |
0.99 | 30 | 44.59675 | 13.22957 | 15.33311 | 23.69147 | 26.99140 | 13.60918 | 16.31790 | 11.37556 | 17.17240 | 5.80932 | 6.39547 | 5.25837 | 6.01996 |
75 | 8.26677 | 3.98246 | 4.48114 | 5.50711 | 2.58519 | 3.09807 | 3.77092 | 2.89515 | 4.18801 | 1.02192 | 1.17176 | 1.04398 | 1.02375 | |
150 | 2.55246 | 1.30186 | 1.44568 | 1.61291 | 1.41087 | 0.92769 | 1.09256 | 0.90943 | 1.22540 | 0.68413 | 0.72521 | 0.70622 | 0.68669 | |
200 | 1.80815 | 1.06092 | 1.15381 | 1.26477 | 1.18300 | 0.81388 | 0.91891 | 0.80264 | 1.01518 | 0.67158 | 0.70958 | 0.69170 | 0.67465 | |
300 | 1.15811 | 0.73111 | 0.78663 | 0.83577 | 0.84691 | 0.57551 | 0.62638 | 0.56562 | 0.68387 | 0.52039 | 0.53281 | 0.52629 | 0.52057 | |
400 | 0.96486 | 0.65551 | 0.69770 | 0.73232 | 0.75385 | 0.52529 | 0.56474 | 0.51751 | 0.61340 | 0.48491 | 0.49318 | 0.48887 | 0.48417 | |
500 | 0.94338 | 0.70602 | 0.74313 | 0.77427 | 0.75685 | 0.56192 | 0.61625 | 0.56676 | 0.66951 | 0.52202 | 0.54011 | 0.52814 | 0.52171 | |