Task-specific adaptation in Chinese name recognition

In this paper, task-specific adaptation is proposed to improve Chinese name recognition performance. Since acoustic models are usually trained using large vocabulary continuous speech corpora, there exists distortion between modeling and decoding in name recognition. To compensate the mismatch, task-specific adaptation, which is performed in the MLLR framework with multi-regression classes, is proposed. Experimental results show that task-specific adaptation is very effective in Chinese name recognition to compensate the mismatch.