Interspeech'2005 - Eurospeech
This paper proposes an efficient anti-keyword derivation method to improve the rejection performance of keyword spotting. In this method, each anti-keyword is derived from the large vocabulary lexicon considering acoustic similarity to keywords, making use of the confusion matrix. Experimental results show that a 3% improvement of the rejection rate is obtained compared to conventional methods that do not have our anti-keyword models.
Bibliographic reference. Yamada, Makoto / Kato, Tsuneo / Naito, Masaki / Kawai, Hisashi (2005): "Improvement of rejection performance of keyword spotting using anti-keywords derived from large vocabulary considering acoustical similarity to keywords", In INTERSPEECH-2005, 1445-1448.