For example, MSRSeg achieves better average performance than the other three segmenters that report results on all four data sets (i.e., S03, S11, CRF).
to remedy this problem, Sun and tsou (2001) revise the definition as follows: Definition 3 A character string AB is called a combination ambiguity string (CAS) if A, B, and AB are words, and there is at least one context under which the segmentation A/B is plausible both semantically and syntactically.