For instance, the goal of Schone and Jurafsky (2000) was "to identify an automatic, knowledge-free algorithm that finds all and only those collocations where it is necessary to supply a definition."
in order to accomplish this complex task authors made little if any effort to normalize extracted MWT candidates: "Prior to applying the algorithms, we lemmatize using a weakly-informed tokenizer that knows only that white space and punctuation separate words."