基于应急知识模型的文本知识获取研究

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1、大连理工大学硕士学位论文基于应急知识模型的文本知识获取研究姓名：杜云阶申请学位级别：硕士专业：信息管理与电子政务指导教师：裘江南20081201ResearchonKnowledgeAcquisitionfromTextBasedonanEmergencyKnowledgeModelAbstractKnowledgeAcquisitionfromtexthasalwaysbeenarearchfocusasabottleneckinthefieldofArtificialIntelligenceandKnowledgeBaseSystemdevelopment．Plentyofknowledg

2、edistributeeverywhereinthetext，alsothesamesituationinemergencydomain,也ereareplentyofknowledgesuchasprofessionalknowledgeofdisasters，emergencyresponsesanddynamiclawsofdisasters．However，MostoftheexistingmethodsaredependonKnowledgeEngineer(KE)，orasawayofassistingKEacquisiteknowledgefromtext，asaresuIt．m

3、ostofthemhavealowefficienceandnalTOWapplicatingfield，alsomostoftheknowledgetheyacquisitearesimplyconceptsandrelationships，andnotapplicabletoourproject．Todealwiththeaboveproblems，thispaperanalysistheknowledgeneedsoftheprojectandcharaCteriSticsoftextsinemergencydomain，andfinallypresentsaknowledgemodel

4、ofemergencytomanageandrepresenttheabstractsofdisasters，andalsoadictionaryoflogicalrelationships．Basedonthismodelanddictionary，amethodofextractingfactsandrelationshipbetweenthemfromtextsofemergencyfieldisproposed，combinedpattem．matchingmethod，partofNaturalLanguageProcessingtechnologyandstatisticalmet

5、hods．Andalsoproposeamethodofrepresentingtheextractedfactsandrelationshipsmawayofgraph，asabasisofextractionofknowledgepatternwhichisthesubsequencetask，Inordertorefinetheexistingknowledge，andfinallysupportemergencydecision-making·Inthispaper，aconcept“GeneralFact'’isproposedforthefirsttimeandamethodofe

6、xtractingGeneralFactfromtext，andafoundationisconstructedfortheextractionofrulesandknowledgepattern．Thispaperalsoproposesusingadictionaryoflogicalrelationshipstoextractrelationshipsbetweenfacts．TheextractedknowledgecanbeappliedtotheKnowledgeBaseoftheprojectdirectlyandhassomepracticalandtheoreticalval

7、ue．KeyWords：KnowledgeModel；KnowledgeAcquisition；Text；Emergency；DisasterII—大连理工大学学位论文独创性声明作者郑重声明：所呈交的学位论文，是本人在导师的指导下进行研究工作所取得的成果。尽我所知，除文中已经注明引用内容和致谢的地方外，本论文不包含其他个人或集体已经发表的研究成果，也不包含其他已申请学位或其他用途使用过的成果。与我