lr,21-5-P03-1051,bq | from a 155 million <term> word </term> <term> | unsegmented corpus | </term> , and re-estimate the <term> model | #4727 To improve the segmentation accuracy, we use an unsupervised algorithm for automatically acquiring new stems from a 155 million word unsegmented corpus , and re-estimate the model parameters with the expanded vocabulary and training corpus. |