工程质量事故诊断知识库构建中案例设计分析-case design analysis in construction of engineering quality accident diagnosis knowledge base.docxVIP
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工程质量事故诊断知识库构建中案例设计分析-case design analysis in construction of engineering quality accident diagnosis knowledge base
摘要近几年我国的工程建设质量取得了明显的进步,但是目前的形势还相当严峻,集中表现为工程质量事故频频发生,尤其是重大工程质量事故。从事故中吸取教训,分析原因,采取对策,才能避免同类事故的重复发生。本文从提高工程质量管理领域的信息化和现代化程度的角度,提出在工程质量事故诊断中应用知识库,提高工程质量管理的水平,从而促进建筑工程质量的提高。论文在研究知识库的构建技术的基础上,结合工程质量事故的特点,提出了构建基于案例的工程质量事故诊断知识库,将事故案例作为事故诊断的依据之一,给出了工程质量事故诊断知识库构建中案例的总体设计,进而,深入探讨了单元案例、案例集的设计问题。在单元案例的设计方面,本文提出了手工、半自动和自动三种方式获取案例知识,然后构造了基于特征的案例内容描述和面向对象的案例结构的表示,完成了对单元案例知识的表示,并引入模糊数学贴近度方法用于案例间相似性的度量,以钢筋混凝土工程为例建立了相似性度量模型,证明了该方法在诊断结果上的准确性;在案例集的设计方面,针对工程质量事故系统复杂却具备系统层次性、局部规律性的特点,本文设计了按事故分类、分层索引的案例组织结构,建立了基于关系数据库的案例存储模型,既保证了案例库具有较小的体积,又便于案例的调用;最后,本文提出了有效的案例管理措施,包括用户功能权限的设置,单元案例的增添、修正、删除,案例集的优化等,确保知识库在运行过程中处于最佳状态。关键词:工程质量事故诊断知识库案例模糊数学AbstractEngineeringqualityinourcountryhasmadeobviousprogressinrecentyears,butitstillneedsfurtherconcern.Engineeringaccidents,especiallyheavyaccidents,happenregularly.Toavoidtherecurrenceofthesimilaraccidents,weshouldlearnfromtheaccidents,analyzethecausesandtakecentermeasures.Thisthesisproposesthatitbeanefficientwaytoapplyrepositorytothediagnosisofengineeringaccidents.Becauseoftheapplicationofrepository,engineeringqualitymanagementisimproved,soisengineeringquality.Basedontheresearchonrepositoryconstructiontechnology,consideringthecharacteristicsofengineeringqualityaccidents,engineeringqualityaccidentdiagnosisrepositorybasedoncasereasoningisaccomplished.Furthermore,thedesignproblemsofunitcaseandcasecollectionarediscusseddeeply.Inthedesignoftheunitcase,knowledgeofthecaseisobtainedinthreeways,i.e,manual,semi-automaticandautomatic,thendescriptionofcharacteristic-basedcasecontentsandobject-orientedcasestructureareintroduced.Inthemeantime,theknowledgeoftheunitcaseispresented.Theconceptofapproachingdegreeinfuzzymathematicsisintroducedtomeasurethesimilarityamongthecases.Theexampleofthereinforcedconcreteprojectsprovestheaccuracyofthediagnosisresultsinthismethod.Inthedesignofthecasecollection,themulti-layeredstructureoftherepositoryandcasesavedmodelbasedontherelationdatabaseareformedinaccordingwiththekeycharacteristicoftheengineeringqualityaccidents,whichensuresthesm
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