(2003) presented the theories and approaches to calculate the frequencies of Tibetan characters, pieces, syllables and words based on a large scale Tibetan corpus including about 40, 000, 000 syllables (Lu et al., 2003).
a large part of the corpus they used are Buddhist literatures and the work can't be done well without a pragmatic Tibetan word segmentation tool (Chen et al., 2003a;Chen et al., 2003b;Jiang, 2006;Jiang and Kong, 2006;Sun et al., 2009;Sun et al., 2010;Lu and Shi, 2011;Liu et al., 2012a).