The major distinction between these methods is in the contrast between the approaches based exclusively on the information contained in the text to be segmented, such as lexical repetition (e.g., <cite>Choi 2000</cite>; Hearst 1997; Heinonen 1998; Kehagias, Pavlina, and Petridis 2003; Utiyama and Isahara 2001) , and those approaches that rest on complementary semantic knowledge extracted from dictionaries and thesauruses (e.g., Kozima 1993; Lin et al. 2004; Morris and Hirst 1991) , or from collocations collected in large corpora (Bolshakov and Gelbukh 2001; Brants, Chen, and Tsochantaridis 2002; Choi et al. 2001; Ferret 2002; Kaufmann 1999; Ponte and Croft 1997) .