Confusion-based query expansion for OOV words in spoken document retrieval
Beth Logan, Jason Thong · 2002
We present a novel approach to the out of vocabulary (OOV) query problem for audio indexing. Our technique first builds a word index for the audio using speech recognition. It then expands query words into in-vocabulary phrases according to intrinsic acoustic confusability and language model scores. The aim is to mimic the mistakes the speech recognizer makes when transcribing the OOV words.