Paper: Using N-Best Lists For Named Entity Recognition From Chinese Speech

ACL ID N04-4010
Title Using N-Best Lists For Named Entity Recognition From Chinese Speech
Venue Human Language Technologies
Session Short Paper
Year 2004
Authors

We present the first known result for named entity recognition (NER) in realistic large- vocabulary spoken Chinese. We establish this result by applying a maximum entropy model, currently the single best known approach for textual Chinese NER, to the recognition output of the BBN LVCSR system on Chinese Broadcast News utterances. Our results support the claim that transferring NER approaches from text to spoken language is a significantly more difficult task for Chinese than for English. We propose re-segmenting the ASR hypotheses as well as applying post- classification to improve the performance. Finally, we introduce a method of using n-best hypotheses that yields a small but nevertheless useful improvement NER accuracy. We use acoustic, phonetic, language model, NER and other scores as...