基于N元共現(xiàn)的機(jī)器翻譯自動評價的研究.pdf

1、北京工商大學(xué)碩士學(xué)位論文基于N元共現(xiàn)的機(jī)器翻譯自動評價的研究姓名：呂婷婷申請學(xué)位級別：碩士專業(yè)：計(jì)算機(jī)應(yīng)用技術(shù)指導(dǎo)教師：張政20070501基于N元共現(xiàn)的機(jī)器翻譯自動評價的研究AbstractTheevaluationofMTCOllieSalongwiththeMTandtheymoveforwardwitheachotherButfortheintensivelaborcosttimedelayandirresuabilityoft

2、hemanualevaluationitcanrarelyhelpthedevelopmentofNITsystemsThereforeit’IIbeahugeimpetustotheimprovementofMTbYinventing80meeffectiveandpracticalevaluationmethodsofMTThepurposeofthispaperliesintheexplorationandrealizationo

3、ftheautomaticevaluationofMT80thatonecananalyzethetheoryandmethodofMTFirstlythepaperexplainstheconceptandtheoryofautomaticevaluationofMTSecondlyitintroducesseveralcurrentevaluationmethodsNextitbringsforwardanewmemcRBLEUan

4、daimstoplaceapositiveinfluenceupontheimprovementofNITThispaperproposesanewevaluationmetricbased0nngramco—occurrenceandadoptsharmonicmeanasthekeyfactoroftheevaluationTheevaluationsystemrealizestwometricsBLEUandRBLEUtender

5、allautomaticjudgmentofthecandidatetranslationsbythreecommercializedMTsystemsThepapercomparesandanalyzestheexperimentresultstoproveRBLEUCanbeaneffectivewayforevaluationofNITThe20SOUrcesamplesaretakenfromthe863Chinese—Engl

6、ishtestcorpusofyear1998TheirreferencesstoredinAccessdatabasealeofferedbyeoHegestudents，whoarenativeChinesespeakersandwhoseEnglishlevelsareexcellentgoodandordinaryTheauthoradoptsObjectOrientedconceptiontodesignanddevelopt