计算机语言学语料库语言学机器翻译.pptxVIP

Chapter10LanguageandComputerEnglishLinguistics:AnIntroduction

Chapter10LanguageandComputer0.Warm-upQuestions1.ComputationalLinguistics2.CALL3.MachineTranslation4.CorpusLinguistics

0.Warm-upQuestionsInwhatwayscancomputerfacilitateourlanguagelearning?TowhatextentdoyourelyoncomputerinyourEnglishlearning?Howtoimprovetheoutputqualityofmachinetranslation?WhatistheimpactoftheInternetonmachinetranslation?

1.ComputationalLinguistics1.1Definition(p226)Abranchofappliedlinguistics,dealingwithcomputerprocessingofhumanlanguage.1.2RelatedsubjectsProgrammedinstruction编序教学法、程式化教学Speechsynthesis言语合成AutomaticrecognitionofhumanspeechAutomatictranslationofnaturallanguagesCommunicationbetweenpeopleandcomputersTextprocessing,etc

2.CALL2.1CAI,CAL,CALL(p226)CAI:Computer-assistedInstructionCAL:Computer-assistedLearningCALL:Computer-assistedLanguageLearning2.2PhasesofCALLBehavioristicCALL:computerastutorCommunicativeCALL:computerasstimulusIntegrativeCALL:multimediaandtheInternet

2.CALL2.3TypesofCALLprogramsDaviesHiggins(1985):Gapmaster,Mazes,etc.JonesFortescue(1987):Matchmaster,Wordstore,etc.Higgins(1993):Customizing,Computernetworks,etc2.4AdvantagesandProblemsAdvantagesMotivation,adaptive,authenticity,criticalthinkingProblems(Limitationsofthetechnology)ability(human-likeinteraction),availability(cost),etc.

3.MachineTranslation3.1IntroductionDefinition:theuseofmachine(usuallycomputers)totranslatetext(orspeech)fromonenaturalLtoanother.Types:UnassistedMTandAssistedMT;T2TMT,S2SMT,S2TMT,T2SMT3.2Historyofdevelopment1950s:independentworkbyMTresearchers1960s:hopeforgoodquality? Since1970s:computer-basedtools

3.MachineTranslation3.3ResearchmethodsRule-based:Transfer-dictionary-based,interlingualKnowledge-based:semantic,pragmatic,real-worldCorpu