ISCA Archive Eurospeech 1999
ISCA Archive Eurospeech 1999

Prediction of keyword spotting accuracy based on simulation

Yoichi Yamashita

This paper proposes a method of predicting accuracy of keyword spotting in terms of FA count and spotting score of correct detections. A new measure F for predicting the FA count is calculated by simulation of the keyword spotting for phoneme sequences that phoneme-based language model generates. Another measure C for predicting the spotting score of correct detections is obtained from a product of correct recognition probabilities of phonemes. Both correlation coeficients and prediction errors are used to evaluate these measures in comparison with a simple measure of the keyword phoneme length, L. The prediction errors of FA count based on L was 7.71. The measure F reduced the prediction errors by 16%, and it had stronger correlation with the FA count. Furthermore a combined measure of F and L reduced the errors by 23%. On the other hand, L was more effective to predict the spotting score of correct detections than the measure C.


doi: 10.21437/Eurospeech.1999-289

Cite as: Yamashita, Y. (1999) Prediction of keyword spotting accuracy based on simulation. Proc. 6th European Conference on Speech Communication and Technology (Eurospeech 1999), 1235-1238, doi: 10.21437/Eurospeech.1999-289

@inproceedings{yamashita99_eurospeech,
  author={Yoichi Yamashita},
  title={{Prediction of keyword spotting accuracy based on simulation}},
  year=1999,
  booktitle={Proc. 6th European Conference on Speech Communication and Technology (Eurospeech 1999)},
  pages={1235--1238},
  doi={10.21437/Eurospeech.1999-289}
}