面向XML文檔集的檢索技術(shù)研究與系統(tǒng)實現(xiàn).pdf

1、中國科學(xué)技術(shù)大學(xué)碩士學(xué)位論文面向XML文檔集的檢索技術(shù)研究與系統(tǒng)實現(xiàn)姓名：胡錦南申請學(xué)位級別：碩士專業(yè)：計算機應(yīng)用指導(dǎo)教師：陳恩紅20090501AbstractABSTRACTAstheinformationgrowsrapidlyontheInternetandespeciallythewideanddeepapplicationofXMLtechnologyinmoreandmorefields，Traditionalinform

2、ationretrievalsystemsbasedonHTMLandpuretextcannotsatisfypeopletheneedofretrievingthevariousinformationinXMLdocumentsHTMLiSbeingreplacedbyXMLincertainfieldbecauseofthesimplicityopenness，extendibility。andinteroperabilityof

3、XMLwhichisbecomingthemainformofinformationexpressionontheInternetandotherapplicationsXMLsearchingtechnologyisimprovingallthetimeNosearchingmodeltodayisusedgenerallyandthestandardquerylanguages：XPathandXQueryprovidedbyW3C

4、areallbasedontheprecisetagmatchingCommonuserscanhardlymakeeffientqueriesbyunderstandingthestructureoftheXMLdocumentssincemostoftheXMLdocumentshaveaverycomplexandirregularstructureThismakesthesearchingexperiencesnotgoodfo

5、rusersThus，it’SoneoftheresearchinghotspotintheinternationalIRcommunitytllathowtoutilizethenewfeaturesrichinXMLfullyandstudythetraditionalinformationretrievaltechnologyforreferenceandbuildanativeXMLbasedinformationretriev

6、alsystemwithhighefficiencyThispaperbringsupapathindexmethodandatwigpathsearchingmethodforXMLdocumentset，andbeyondallthisanXMLdocumentsetinformationretrievalsystemWasbuiltThedetailedcontentisasfollow：I)Itprovidesanindexin

7、gmethodforXMLdocumentsetbasedonpathdivisioncombinedwithtraditionalinvertedlistindexforkeywordsearchingandthepathinformationofthenodes。2)ItbringsupanefficienttwigpathsearchingmechanismwhichCanmakethenodestiltedinlineartim

8、eaccordingtotheinputdatascaleforcomplextwigquerywithoutgeneratingtoomuchintermediateresult3)ItdesigedandimplementedanXMLsearchingsystembasedonthetechnicsaboveBesidesthesearchingabilityitprovidesanAPIforinformationprocess