The purpose of this study is to review on keyphrase extraction research from science citation index expanded (SCI-EXPANED) database on web of science. The result indicates that the number of literature productions on this topic mainly distributes in recent 10 years, reaching climax in 2005 and then followed by 2010. The primary research development country is China. From the analysis result of document type, proceedings paper accounts for 50%. In general, the related research topics can be classified into keyphrase extraction for oriental language documents, English documents and bilingual documents. Hebrew documents and Chinese documents as oriental language documents have been the main objects for keyphrase extraction. Meanwhile keyphrase extraction for bilingual documents has been stressed on English and Arabic documents. Meanwhile recommendation is the focus for keyphrase extraction in English documents.
South Carolina DOE/EPSCoR energy-related research development grant. Final report addendum, 30 September, 1992--29 March, 1993