06094743

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06094743 Nishii, Shunsuke Suzumura, Toyotaro Highly scalable speech processing on data stream management system. Lee, Sang-goo (ed.) et al., Database systems for advanced applications. 17th international conference, DASFAA 2012, Busan, South Korea, April 15--19, 2012. Proceedings, Part II. Berlin: Springer (ISBN 978-3-642-29034-3/pbk). Lecture Notes in Computer Science 7239, 203-212 (2012). 2012 Berlin: Springer EN

doi:10.1007/978-3-642-29035-0_14

Summary: Today we require sophisticated speech processing technologies that process massive speech data simultaneously. In this paper we describe the implementation and evaluation of a Julius-backended parallel and scalable speech recognition system on the data stream management system ``System S'' developed by IBM Research. Our experimental result on our parallel and distributed environment with 4 nodes and 16 cores shows that the throughput can be significantly increased by a factor of 13.8 when compared with that on a single core. We also demonstrate that the beam management module in our system can keep throughput and recognition accuracy with varying input data rate.