“…Taxonomic, syntactic and semantic theory on MWUs has had a longer history than the computationally-driven studies of frequent word strings. Researchers in theories of MWUs include Weinreich (1969), Nunberg (1978), Nunberg, Wasow and Sag (1994), and Wasow, Sag and Nunberg (1980) on idioms, Mel'čuk (1995Mel'čuk ( , 1996Mel'čuk ( , 1998 and Howarth (1996Howarth ( , 1998 on restricted collocations and fixed phrases, Pawley and Syder (1983) and DeCarrico (1986, 1992) on "routinized" formulae, and Kuiper (1996Kuiper ( , 2000Kuiper ( , 2006Kuiper ( , 2009 and Wray (2002Wray ( , 2008 on formulaic language in a broader sense. In experimental studies, however, some researchers use as stimuli MWUs that appear to be a mix of MWU subtypes and that would be classified as different types according to certain linguistic taxonomies.…”