Table 2.
Average RMSEs for the M2PL model parameters with
,
across TSNA, TASNA, and EM algorithm implemented in the mirt package
| K | N |
|
a 1 | a 2 | d | θ | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TSNA | TASNA | mirt | TSNA | TASNA | mirt | TSNA | TASNA | mirt | TSNA | TASNA | mirt | |||
| 5,000 | 0.65 | 0.157 | 0.082 | 0.068 | 0.152 | 0.079 | 0.071 | 0.127 | 0.057 | 0.045 | 0.588 | 0.586 | 0.578 | |
| 0.75 | 0.100 | 0.072 | 0.099 | 0.078 | 0.086 | 0.083 | 0.585 | 0.589 | ||||||
| 0.90 | 0.087 | 0.175 | 0.108 | 0.183 | 0.111 | 0.174 | 0.591 | 0.604 | ||||||
| 1.00 | 0.199 | 0.285 | 0.212 | 0.280 | 0.188 | 0.280 | 0.608 | 0.627 | ||||||
| 10 | 10,000 | 0.65 | 0.115 | 0.064 | 0.048 | 0.116 | 0.069 | 0.051 | 0.097 | 0.032 | 0.032 | 0.588 | 0.585 | 0.580 |
| 0.75 | 0.075 | 0.054 | 0.074 | 0.050 | 0.063 | 0.041 | 0.585 | 0.586 | ||||||
| 0.90 | 0.059 | 0.125 | 0.065 | 0.124 | 0.075 | 0.121 | 0.587 | 0.595 | ||||||
| 1.00 | 0.160 | 0.241 | 0.159 | 0.227 | 0.150 | 0.225 | 0.599 | 0.613 | ||||||
| 20,000 | 0.65 | 0.092 | 0.046 | 0.034 | 0.093 | 0.044 | 0.034 | 0.076 | 0.024 | 0.024 | 0.586 | 0.584 | 0.581 | |
| 0.75 | 0.060 | 0.037 | 0.057 | 0.036 | 0.047 | 0.027 | 0.584 | 0.585 | ||||||
| 0.90 | 0.038 | 0.085 | 0.045 | 0.093 | 0.066 | 0.102 | 0.586 | 0.591 | ||||||
| 1.00 | 0.125 | 0.200 | 0.133 | 0.199 | 0.137 | 0.192 | 0.594 | 0.606 | ||||||
| 5,000 | 0.65 | 0.159 | 0.085 | 0.068 | 0.153 | 0.081 | 0.071 | 0.127 | 0.057 | 0.045 | 0.588 | 0.586 | 0.577 | |
| 0.75 | 0.100 | 0.071 | 0.100 | 0.077 | 0.086 | 0.083 | 0.585 | 0.589 | ||||||
| 0.90 | 0.085 | 0.173 | 0.106 | 0.181 | 0.112 | 0.174 | 0.591 | 0.604 | ||||||
| 1.00 | 0.197 | 0.283 | 0.210 | 0.278 | 0.188 | 0.280 | 0.608 | 0.626 | ||||||
| 20 | 10,000 | 0.65 | 0.115 | 0.066 | 0.048 | 0.116 | 0.071 | 0.051 | 0.096 | 0.032 | 0.032 | 0.588 | 0.585 | 0.580 |
| 0.75 | 0.075 | 0.054 | 0.074 | 0.051 | 0.063 | 0.041 | 0.585 | 0.586 | ||||||
| 0.90 | 0.058 | 0.124 | 0.063 | 0.122 | 0.075 | 0.121 | 0.587 | 0.595 | ||||||
| 1.00 | 0.158 | 0.240 | 0.158 | 0.225 | 0.150 | 0.225 | 0.599 | 0.613 | ||||||
| 20,000 | 0.65 | 0.093 | 0.049 | 0.034 | 0.093 | 0.045 | 0.034 | 0.076 | 0.024 | 0.024 | 0.586 | 0.584 | 0.581 | |
| 0.75 | 0.061 | 0.038 | 0.057 | 0.035 | 0.047 | 0.027 | 0.584 | 0.585 | ||||||
| 0.90 | 0.038 | 0.084 | 0.044 | 0.091 | 0.065 | 0.101 | 0.585 | 0.591 | ||||||
| 1.00 | 0.123 | 0.198 | 0.131 | 0.197 | 0.137 | 0.192 | 0.594 | 0.605 | ||||||
Note: Boldface values indicate estimation results with relatively smaller RMSEs under the same simulation condition. In some settings, more than one tuning parameter value shows comparable performance and is therefore highlighted.