A Speech Translation System Applied to a Real-World Task/Domain and Its Evaluation Using Real-World Speech Data

Atsushi NAKAMURA  Masaki NAITO  Hajime TSUKADA  Rainer GRUHN  Eiichiro SUMITA  Hideki KASHIOKA  Hideharu NAKAJIMA  Tohru SHIMIZU  Yoshinori SAGISAKA  

IEICE TRANSACTIONS on Information and Systems   Vol.E84-D    No.1    pp.142-154
Publication Date: 2001/01/01
Online ISSN: 
Print ISSN: 0916-8532
Type of Manuscript: PAPER
Category: Speech and Hearing
speech translation system,  real-world speech,  task-alteration,  cost evaluation and performance evaluation,  

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This paper describes an application of a speech translation system to another task/domain in the real-world by using developmental data collected from real-world interactions. The total cost for this task-alteration was calculated to be 9 Person-Month. The newly applied system was also evaluated by using speech data collected from real-world interactions. For real-world speech having a machine-friendly speaking style, the newly applied system could recognize typical sentences with a word accuracy of 90% or better. We also found that, concerning the overall speech translation performance, the system could translate about 80% of the input Japanese speech into acceptable English sentences.