基于词性标注的异步CMC：比较 母语、非母语和报刊英语

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1、PartofspeechtaggedasynchronousCMC:Comparingnative,non-native,andnewspaperEnglishCraigDennisHowardIndianaUniversityBloomingtoncdh@indiana.eduDevelopinglearnerproficiencyinL2CMCpresentsuniqueproblemsnotaddressedintraditionalcoursematerials.Thepedagogicalvalueoflearnercorporaiswelldocumented;however,c

2、orporaoflearnerCMCarelesscommonlyinvestigated.TaggingofpartsofspeechandcomparingL2andnativespeakers’samplesshedlightonthedifferencesbetweenwrittenandcomputer-mediatedlanguagewhencomparedwithsamplesofmoretraditionaltexts.Inthisstudy,theauthorusedatrainedversionofaBrillpartofspeechtaggertotag,studyan

3、danalyzethreecorpora’strigrams.Thethreecorporawere:(1)asynchronousnativespeakerCMC,(2)non-nativespeakerCMC,and(3)asetofnewspaperarticles.Theanalysisfoundthatthenon-nativespeakerssharedthenewspapers’characteristicsofrepeatedtrigrams,butdissimilarpartofspeechtrigrams.Italsofoundthatthenon-nativespeak

4、ers’CMCsharedanumberofpopularpartofspeechtrigramswiththenativespeakerCMCcorpus,hintingatastructuraldifferenceincomputer-mediateddiscourse.Thearticlequestionsifcommonlyusedpedagogicallytexts,suchasnewspaperarticles,canaddresstheuniquenessofCMCandareas“authentic”aswegenerallyconsiderthemtobe.Implicat

5、ionsforteachingandL2materialsdevelopmentarediscussed.1.IntroductionAnumberofscholarlyjournalsoutsidecomputationallinguisticshaverunspecialissuestoinvestigatethepedagogicalapplicationsofusingcorporaforlearningandlearningdesigns(Tribble&Barlow2001).Themostcommonusesofcorporaaretoaidinstructionwithnat

6、ivespeakerexamplesandprovidecollocationstoinquisitivelearners;however,thegreatestdemandsinthefieldofComputer-assistedlanguagelearning(CALL)arenotforlexicalcollocations,butforcomputerstoprovideautomaticnativespeakinginterlocutorsanderrorcorrectionforstudents(Atwelletal.2000).Thuscomputationallinguis

7、tics’greatestpotentialcontributiontoL2learningisnotprovidingexamplesoftargetusage,butrichdescriptionswhichaidinourunderstandingofnativespeakers’onlinediscourserulesofpractice.Teachersandlearnerswillbenefitm