WordSmith-tools′-keywords-語料庫語言學講義課件

Klicken Sie,um das Titelformat zu bearbeiten,Klicken Sie,um die Formate des Vorlagentextes zu bearbeiten,Zweite Ebene,Dritte Ebene,Vierte Ebene,Fnfte Ebene,WordSmith Tools,KeyWords,1,What are keywords?,Positive and negative keywords,Using KeyWords analysis in.,How?,Keyness and p value,Practice,What are keywords?,A keyword is a word whose relative frequency in an,observed corpus,is unusually higher or lower than that in a,reference corpus,.,Positive and negative keywords,Positive keywords,are words which are unusually more frequent than they are in a reference corpus.,In legal documents,for example,words like,act,article,penalty,delinquency,etc.are much more frequent than they are in a general corpus.,Positive and negative keywords,Negative keywords,are words which are much,less frequent,than they are in a reference corpus.,Often used to determined which words are underused.,Using KeyWords analysis,In lexicography,In content analysis and text classification,In SLA,How?,In order to make a KeyWords analysis with Wordsmith Tools,two wordlists are needed.,Wordlists show the frequency profiles of words in a corpus.,Now,is“,the,”overused or underused in Chinese EFL learners texts?,Which other words are underused in Chinese EFL learners texts?,100,100,thanks!,。