Abstract：Facing with the age of big data, it is of great importance to locate key sensitive information from various audio and video that are ever-increasing. Although such teachnology named speech retrieval technology has been well addressed in Chinese and English,the Uyghur speech retrieval technology is still in its infancy. This paper investigates this issue and establishes a Uyghur speech retrieval system by using such technologies as of the large vocabulary continuous speech recognition, the confusion network for latice, the inverted index, and relevance estimation. Experimental results show that at the level of 82.1% accuracy rate for speech recognition,the system recall reaches 97.0% and 79.1%,with the false alarm rates of 13.5% and 8.5%, respectively.
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2014, Vol. 28 
