ISCA Archive ICSLP 1994
ISCA Archive ICSLP 1994

Active/non-active word control using garbage model, unknown word re-evaluation in speech conversation

Masayuki Yamada, Yasuhiro Komori, Yasunori Ohora

In this paper, we propose a new active/non-active word control algorithm, which we call unknown word re-evaluation algorithm. In the algorithm, we incorporate an unknown word detection using Garbage Models into a speech recognizer which dynamically changes its vocabulary. When the Garbage Models are perceived, non-active words suitable for the situation are activated and compared with the unknown part of the speech. Information for the re-evaluation is obtained from the speech containing the unknown part. Supplementary information may be obtained in the succeeding discourse in some cases. The algorithm makes a dynamic vocabulary recognizer more useful decreasing the risk of misprediction against the next utterance without spoiling its advantages in recognition speed and rate. In our preliminary experiment, 86.4% of proper nouns were correctly re-evaluated using the Garbage Models, while the false alarms of 5% were found.


Cite as: Yamada, M., Komori, Y., Ohora, Y. (1994) Active/non-active word control using garbage model, unknown word re-evaluation in speech conversation. Proc. 3rd International Conference on Spoken Language Processing (ICSLP 1994), 823-826

@inproceedings{yamada94_icslp,
  author={Masayuki Yamada and Yasuhiro Komori and Yasunori Ohora},
  title={{Active/non-active word control using garbage model, unknown word re-evaluation in speech conversation}},
  year=1994,
  booktitle={Proc. 3rd International Conference on Spoken Language Processing (ICSLP 1994)},
  pages={823--826}
}