In contrast, some research have been focused on using predefined sets of sense-groupings for learning class-based classifiers for WSD (Segond et al., 1997), (Ciaramita and Johnson, 2003), (Villarejo et al., 2005), (Curran, 2005) and (Ciaramita and Altun, 2006).
grouping senses of different words into the same explicit and comprehensive semantic class.