Although supervised CWS models (Xue, 2003;Zhao et al., 2006;Zhang and Clark, 2007;Sun, 2011) proposed in the past years showed some reasonably accurate results, the outstanding problem is that they rely heavily on a large amount of labeled da-ta.
the production of segmented Chinese texts is time-consuming and expensive, since hand-labeling individual words and word boundaries is very hard (Jiao et al., 2006).