... glutathione reductase).Acronyms also have variant forms (e.g. NF kappaB, NF kB, NF-KB, NF-kappaB, NFKB factor fornuclear factor-kappa B). Ambiguity and variationpresent a challenge for any text mining ... EvaluationSeveral evaluation corpora for acronym recogni-tion are available. The Medstract Gold StandardEvaluation Corpus, which consists of 166 aliaspairs annotated to 201 MEDLINE abstracts, ... functions (Adar, 2004), sta-tistical analysis (Hisamitsu and Niwa, 2001; Liuand Friedman, 2003) and machine learning ap-proaches (Chang and Sch¨utze, 2006; Pakhomov,2002; Nadeau and Turney,...