DeepWeb数据源发现和语义标注技术研究

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1、苏州大学硕士学位论文DeepWeb数据源发现和语义标注技术研究姓名：李文骏申请学位级别：硕士专业：计算机应用技术指导教师：崔志明20080401AbstractTheResearchonTechnologyofDeepWebSourceDiscoveryandSemanticAnnotationWiththerapiddevelopmentofIntemettechnology,WebdatabaseshavebecameprevalentontheWeb．Basedonuser’Srequest，Webdatabasesdisplaytheircontentsinth

2、eformofHTMLpagesdynamically．ThewholeinformationembeddedinthesepagescalledasDeepWebcallnotbeacquiredbytraditionalsearchengines．Recently，theresearchresultsshowthatDeepWebcontainsagreatamountofinformationwhichishighlyrelevanttomarketdemand．ThereforeDeepWebservedasaresearchemphasishasbeenpai

3、dmoreandmoreattention．ThispaperfirstlydescribestheresearchframeworkofDeepWeb，thenfocusesontechnologyofDeepWebsourcediscoveryandDeepWebsemanticannotation．Inaddition，weproposerelevantalgorithmandmodel．Finally,averticalsearchprototypesystemforbookdomainispresentedandaccomplished．Themainwork

4、softhispaperinclude：(1)IntroducethebasisframeworkofDeepWebresearch，thensummarizetheproblemofDeepWebdatabaseclassificationandWebdataextraction．(2)Analyze，theworkingprincipleoftraditionalsearchengineandproposeanewapproachofDeepWebsourcediscoverybased011searchengine．(3)Proposeanovelapproach

5、ofDeepWebsemanticannotationaccordingtotheinspirationfromforeignrelatedwork．(4)Accomplishaverticalsearchprototypesystemforbookdomainandanalyzetheapplicationofthetechnologymentionedbefore．Thispaperalsodesignsexperimentstoimplementthealgorithmsandtechnologymentioned．Experimentalresultsvalid

6、atethatoursolutioniseffective．·Keywords：DeepWeb，SearchEngine，SourceDiscovery,SemanticAnnotation，DataIntegrationWrittenby：LiWenjunSupervisedby：CuiZhi-minglI图表目录图1．1DeepWeb与SurfaceWeb对比⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．2图2．1Web数据库在主题领域的分布情况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯8图2．2模式间的映射关系⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯9图2．3DeepWeb数

7、据集成系统框架⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．10图3．1传统搜索引擎的工作流程⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯20图3．2数据源发现的设计流程⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯22图3．3查博士分类目录⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．24图3．4网页表单自动分类过程⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．25图4．1查询返回结果⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯29图4．2交叉标注示例⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．32图4．3交叉标注过程⋯⋯⋯⋯⋯⋯⋯