| Sample size | Sample size | ||||||
---|---|---|---|---|---|---|---|---|
 | RRMSE | Rank | ||||||
Estimator | 10 | 25 | 50 | 100 | 10 | 25 | 50 | 100 |
 | Uniform (n = 5) | |||||||
AO2Q | 0.306 | 0.266 | 0.247 | 0.238 | 7 | 8 | 8 | 8 |
AO3Q | 0.280 | 0.247 | 0.232 | 0.224 | 6 | 7 | 7 | 7 |
BDAV3 | 0.254 | 0.202 | 0.182 | 0.173 | 3 | 5 | 5 | 5 |
KM2P | 0.247 | 0.199 | 0.177 | 0.166 | 1 | 3 | 3 | 4 |
KMP | 0.256 | 0.201 | 0.177 | 0.165 | 4 | 4 | 4 | 3 |
OD2C | 0.307 | 0.229 | 0.202 | 0.188 | 8 | 6 | 6 | 6 |
OD3C | 0.251 | 0.182 | 0.157 | 0.143 | 2 | 1 | 1 | 1 |
VAT | 0.258 | 0.194 | 0.167 | 0.148 | 5 | 2 | 2 | 2 |
 | Poisson (n = 2) | |||||||
AO2Q | 0.392 | 0.353 | 0.341 | 0.333 | 8 | 8 | 8 | 8 |
AO3Q | 0.345 | 0.316 | 0.307 | 0.302 | 7 | 7 | 7 | 7 |
BDAV3 | 0.270 | 0.157 | 0.114 | 0.091 | 4 | 3 | 3 | 3 |
KM2P | 0.232 | 0.149 | 0.111 | 0.088 | 1 | 1 | 2 | 2 |
KMP | 0.288 | 0.193 | 0.153 | 0.130 | 5 | 5 | 5 | 5 |
OD2C | 0.304 | 0.199 | 0.159 | 0.131 | 6 | 6 | 6 | 6 |
OD3C | 0.253 | 0.160 | 0.123 | 0.098 | 2 | 4 | 4 | 4 |
VAT | 0.256 | 0.154 | 0.107 | 0.077 | 3 | 2 | 1 | 1 |
 | Clumped (n = 10) | |||||||
AO2Q | 0.390 | 0.321 | 0.293 | 0.277 | 2 | 2 | 3 | 3 |
AO3Q | 0.362 | 0.307 | 0.284 | 0.271 | 1 | 1 | 1 | 2 |
BDAV3 | 0.461 | 0.331 | 0.287 | 0.263 | 6 | 3 | 2 | 1 |
KM2P | 0.424 | 0.374 | 0.361 | 0.354 | 3 | 4 | 4 | 4 |
KMP | 0.468 | 0.427 | 0.413 | 0.406 | 7 | 7 | 6 | 6 |
OD2C | 0.491 | 0.466 | 0.459 | 0.455 | 8 | 8 | 8 | 8 |
OD3C | 0.448 | 0.426 | 0.420 | 0.417 | 5 | 6 | 7 | 7 |
VAT | 0.439 | 0.414 | 0.407 | 0.403 | 4 | 5 | 5 | 5 |
 | All (n = 17) | |||||||
AO2Q | 0.368 | 0.311 | 0.287 | 0.274 | 4 | 4 | 4 | 4 |
AO3Q | 0.338 | 0.292 | 0.273 | 0.263 | 1 | 2 | 2 | 2 |
BDAV3 | 0.380 | 0.273 | 0.236 | 0.216 | 6 | 1 | 1 | 1 |
KM2P | 0.346 | 0.297 | 0.279 | 0.269 | 2 | 3 | 3 | 3 |
KMP | 0.387 | 0.335 | 0.316 | 0.305 | 7 | 7 | 7 | 7 |
OD2C | 0.417 | 0.367 | 0.350 | 0.340 | 8 | 8 | 8 | 8 |
OD3C | 0.369 | 0.325 | 0.311 | 0.301 | 5 | 6 | 6 | 6 |
VAT | 0.366 | 0.321 | 0.303 | 0.291 | 3 | 5 | 5 | 5 |