음성인식 결과는 다수의 후보를 생성할 수 있다. 해당 후보들은 각각 음향모델 값과 언어모델 값을 결합한 형태의 통합 정보를 갖고 있다. 여기서 언어모델 값을 다시 계산하여 성능을 향상하는 접근 방법이 일반적인 음성인식 성능개선 방법 중 하나이며 n-gram 기반 리스코링 접근 방법이 사용되어 왔다. 본 논문은 적절한 성능 개선을 위하여, 대용량 n-gram 모델의 활용 문제점을 고려한 문장 구성 어휘의 의존 관계 분석 접근 방법 및 일정 거리 어휘쌍들의 상호정보량 값을 이용한 접근 방법을 검토한다.
KSP Keywords
n-Gram
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