Title
A Study on Machine Translation System from Japanese to
Sinhalese on MT Engine Jaw( 内容の要旨(Summary) )
Author(s)
Samantha, Thelijjagoda
Report No.(Doctoral
Degree)
博士(工学) 甲第303号
Issue Date
2006-09-13
Type
博士論文
Version
URL
http://hdl.handle.net/20.500.12099/21443
※この資料の著作権は、各資料の著者・学協会・出版社等に帰属します。
氏名(本籍)
学 位
の 種 類学位授与番号
学位授与日付
専
攻
学位論文題目
学位論文審査委員
SamanthaThelijjagoda(スリランカ)
博
士(工学)
甲第 303 号平成18
年 9 月13 日電子情報システム工学専攻
AStudyonMachineTranslationSystemfromJapanesetoSinhaleseon MTEnglne｡ねⅣ(機械翻訳エンジンゐⅣによる日本語からシンハラ語への機械翻訳シス
テムに関する研究)
(主査)教
授
池
田尚
志(副査)教
授
伊
藤
昭教
授
速 水悟
論文内容の要旨
This dissertation describes a machine translation systemfromJapanese to
Sinhalese(ThenationallanguageofSriLanka).ThesystemnamedJaw/Sinhalesehas
beendevelopedontheMTenglneJawasapilotmachinetranslationsystem.Thisisthe
fitstJapanese-Sinhalese MT attempt.W6prppose a method ofanalysisfor Sinhalese
moq)hologicalstructure(btLt2Se由ustructure),WhichsharesfeatureSWithJ叩aneSe,and
make aninvestigationintocontrastivenessbetweenSinl1aleseandJapanese.Then,We PrOPOSetranSlationsolutionsforJapanesefunctionwordsa氏erpredicate$andnouns.200 0fJapaneseshortsamplesentencesweretranslatedintoSinhalesebyJaw/Sinhaleseand itse飴ctivenessisconfirmed.JapaneseandSinhalesearetypologicalレclassifiedasSOVlanguagesandbothare
agglutinativelanguages.Japanesehasbzmse由uOapanesebasiclmguisticuniti)that
COnSists of a content word with one or more function words.Sinhalese also has
bunseisLTlikeunits,andfortheeaseofcomparison,theywillbereferredtoasSinl1alese ムαββe由は
SinhalesebtLnSetSuStruCturehasnotyetbeen叫investigatedespeciauyforthe
VleWPOintofmachineprocesslng.WeproposeamethodtoanabTZetheSinhalesebLZnSetSu
structureformachinetranSlations.Morethan20kindsofverbiI通ectionwords(baseparts
of the verb
bLLt7Se由Li)are
defined and a set offunction words thatfonowsthemisreorgamized.Likewise,forthe caseinflection word ofa noun,a neW Organization of
functionwordsisproposed.Thecaseinflectionisformedbyacombinationofanounbase andafunctionwordforcasemarking.27functionwordsareisolatedforcasemarking.
Since Sinl1alese and Japanese are so similar,inma叩CaSeS there are
One-tO-OneCOrreSpOndencesbetweenJapaneselbunse由uandSinhalesebumwtgu.Butat thesametime,thesecorrespondencesarenotperfect.ThetranslationofJapanesecase
markers into Sinhaleseis ambiguous;thatis,OneJapanese case marker often
COrreSPOndstoseveralSinhalesecasemarkers.Forexample,theJapanesecasemarker
"を,,(椚丸whichisusuanyusedtoindicatethedbjectcase,COrreSpOndsto18casemarkers
inSinl1alese(b(td,鑑∂(haid,蝉(IⅥ血td,8(Ti),感)(AI遍,守成)(nII房,dd(eLi),盛d(丘iTカ,
モ鳩d(適,q感(適い減(e凰包(∂,e庖(適,m(亜,0,(耶乙娩申(血∠或年ぬ(郡励8).we
PrOpOSeamethodtodisambiguatethecorrespondencebyusingbase･tyPerules,Whichare
dependentonthe払ctthatthecaseframepatternofaverbbasicauydetermines case markers.OneJapanese function word after a predicate often a飴cts morethan one
expressionelementinaSinhalesesentence.Forexample,theJapanesefurutionword
"【食ノ勺たい([tabdtab",Whichexpresses"hope/eagerness"onthepartofthesutject,i$
translatedinto"8(td","kDd25)bd],,,and`辱知批感(awashyayai)"(afterasu切ect,an
inflectedverb,and after a
verb)in
a Sinhalese semience.We soke this problem bydescribingthetranslationrulesinatableformat. The first stage ofthe
eh耶伽ahM SyStem prOCeSSeS the translations of
PrOPOSitionalcontent.Theclarificationofcasemarkercorrespondenceishandledinthis Stage.Thesecondstagecoversthetranslationoftenseandmodality,Whichareexpressed
byfunctionwordsa氏erthepredicateinJapanese.Toverifytheavanabilityofoursystem,
200JapaneSe SamPle sentences were evaluated.The results show our approachis
acceptablewithinmachinetranslations.
