異構數(shù)據(jù)的語義查詢技術——基于RDF語義推理技術研究.pdf

1、東南大學碩士學位論文異構數(shù)據(jù)的語義查詢技術——基于RDF語義推理技術研究姓名：鄧秀慧申請學位級別：碩士專業(yè)：計算機軟件與理論指導教師：徐寶文20080518東南大學碩士學位諗文AIbIstractTheResourceDescriptionFramework《ResourceDescriptionFramework，RDF)i8Inainlyused￡ortheselaanticontoloqydescriptionofNetwork工

2、nformationSystemi黻se難anticweb。Asd主f￡erentinformationsys乞emsmayusedi￡ferentdatadescriptionlanquaqeorthelanquaqeofthesamedata0naVarietyofinterpretationmethod8，heteroqeneou8dataproblemswillbeshowedinthenetworkHetero《eneousd

3、ataretrievalbasedonsemanticwebusual土yusestheRDFmode王ofSemanticWebtechno王。礙ytoso王vetheproblemofheterogeneousdataretrievalproblemofeteroaeneousdata￡orthesemantieisahotissueofthecurrenttechnologyresearchCurren乏王yt歉e蕊ost旗ire

4、ctwaVto$o王vele℃eroqenQousda乞巍retr主evalofthesem＆nticis：tomerqeoruseaseriesofrulesto土inkupevery0ntologyofthesemanticweb，andthenmakeuse0ftheRDFsemanticsclosu《ereasoningtechnoloqytodeductionwhichwillgetalm08tallofontologyimp

5、licitk羚ow王ed堪e主建theexp王主eitknow王ed《ew主thoutdup王主ca乏econten乏，毛herebybuildinqacom_p王eteclosurebodV，final王VconversedusersrequesttothecompleteclosurQandsendbackthefinalresulttotheusertha七completingthesemanticqueryheterogeneo

6、usdataRDFse辯ant主oc至osurereaso熱in鷹teehno王o《yis乏he￡oeuso￡rese8rehThecurrentc土osurealCforithmbasedonRDFreasoninqrulesexis七son王arqememoryu8edand10wtimelinessinthetimelinessandcompleteness0ptimizedtheRDFinferenceru土esclosurea

7、lqorithmisamainlyobjectivewhichwi土土solvethe王ow≮主&el主瓢尊ssprob童eI致of￡hetradlt主ona王seman乞圭oelos娃r(nóng)ea王gor主t廷f玨。Theheteroqeneousdataretrievaltechnicaltheoreticalknowledqeandrelatedeonceptsisintroduced，aswellasexi8tinqheterogen

8、eousdataquerytechniquesSecondly，basedontheresearchofRDFsemanticclosurereasoningtechno王oqV主nhe藝erogen80usdataseman乞_圭eq醢erytech您。王ogya秘蠖thea玲a王ys主seoftheRDFreasoninqrujes，weqeta王otofrelationship：asubsetoftriplestatementof

9、allRDFrea80ninqrules，theterminationofthetriplestatementwhichwil王nolonqerparticip蠢teinanVotherreasoningru土esoperation，m◇reprerequisitecon蠖主tionsoftr童1。王es乏atemen乞andc王ass主ficationrelationsbasedonpredicateAccordinqtotheser

10、e上ationsanditeratiVepruninqforwardchaininqalqorithm，optimizedsemanticclosuregenerationa土qorith撇isproposed。Fina王lV，with℃herecfuirementsofefficientclosurea王qorith撇s，theoptim主zationo￡c王osureA王qorithm主s￡urtheropt主rnizedan畦pr

11、oposedinstantiationclosurealqorithmbyalternatetheqenerictripletoInstantiationTriplestypeTheresultsisshownthattheclosureop乞im主zationa王qor主thI廷is掇oreeffieientand￡eas主bl王itywhiehre$o王v主ng℃heprob王el玨o￡c土osure王owerandtoensure