The ISL RT04 Mandarin Broadcast News Evaluation System

Hua Yu, Yik-Cheung Tam, Thomas Schaaf, Sebastian Stüker, Qin Jin, Mohamed Noamany, Tanja Schultz
This paper describes our effort in developing a Mandarin Broadcast News system for the RT-04f (Rich Transcription) evaluation. Starting from a legacy system, we revisited all the issues including partitioning, acoustic modeling, language modeling, decoding and system combination strategies. We have achieved a sizable improvement, from 21.2% to 5.2% on the development set, from 42.7% to 22.4% measured on the RT-04f evaluation set, over a period of three months.
doi:10.5445/ir/1000002545 fatcat:syqwaivqf5c25faen23aldny4i