The IBM LVCSR System Used for 1998 Mandarin Broadcast News Transcription Evaluation
This paper presents the technologies implemented in the IBM's Large Vocabulary Continuous Speech Recognition(LVCSR) system which was designed for 1998 Mandarin broadcast news transcription evaluation task. Compared with the 1997 system, it focuses on acoustic improvements by implementing several new schemes such as LDA and MLLT transformation matrix, BIC model selection criterion, SAT and CAT models. In addition, new language model components and new vocabulary were built. Some other schemes which were tried we also described.