Table 7 False rejection rates for OOV words when using Kaldi-base ASR with N-gram plus RNN re-scoring LM
From: Dynamic out-of-vocabulary word registration to language model for speech recognition
Position | Freq. | 2 mora | 3 mora | 4 mora | 5 mora | |
|---|---|---|---|---|---|---|
ONE | – | – | 1 | .988 | .696 | .5 |
ALL | – | – | .253 | .151 | .071 | .022 |
500r | Random | 500 | .747 | .395 | .214 | .109 |
1kr | Random | 1000 | .639 | .326 | .232 | .152 |
2kr | Random | 2000 | .602 | .302 | .214 | .130 |
5kr | Random | 5000 | .482 | .267 | .214 | .130 |
500c | POS | 500 | .687 | .244 | .232 | .044 |
1kc | POS | 1000 | .518 | .256 | .196 | .043 |
2kc | POS | 2000 | .410 | .289 | .214 | .065 |
5kc | POS | 5000 | .373 | .221 | .179 | .022 |