从实验结果可以看出:(1)从表层相似度,问句与FAQ库中的问题的相似度基本相同,显然与人的主观判断有很大出这种方法不够准确。入,
(2)加入语义相似度之后,问句的相似度排序与人的主观排序基本相同,但Qt与这4个问句的相似度值都超过了阈值(0.65),因此这4个问题对应的答案都被提取出来给用户。
(3)采用多特征融合后,相似度值超过阈值的问句只有Q3和Q4,与人的主观判断基本一致。参考文献:
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AnswerExtractionAlgorithmofChineseQASystem
BasedonMulti-featureFusion
TANGZhao-xia*
(DepartmentofComputerEngineering,HuaiyinUniversityofTechnology,Huaian223003,China)
Abstract:WiththerapiddevelopmentandtheappearanceofconceptofWeb2.0,becauseoftheexactanswerdi-rectly,QAsystemhasbecomeanewinformationretrievaltechnology.Asthequestionsareintheformofnatural
language,Questionsrelatetothesemanticsunderstandingandsimilarityjudgments.Inthispaper,basedonquestion'ssurfaceandsemanticsimilaritycalculationmethod,removalofredundantinformationwascarriedout
theweightoffeatureswascalculatedbyentropy,finallyquestion'ssimilaritywascalculatedbyinte-byclustering,
grationofmultiplefeaturesforanswerextraction.Experimentsshowthatthismethodcaneffectivelyimprovetheanswerextractionaccuracyandefficiency.
Keywords:QAsystem;questionsimilarity;clustering;answerextraction(上接第79页)
OrdinaryOuterThreadPreciseModelingBasedon
SolidWorksSoftwareandVBProgramming
CHENJin-ping,YEYuan-wei,HUANGHui*,ZHENGYong,DENGYi-guo,LIMing
(Agro-machineryResearchInstituteofChineseAcademicofTropicalAgriculturalScience,Zhanjiang524091,China)
Abstract:Atpresentthemainstream3DmechanicaldesignsoftwareareUG,CAXA,SolidWorks.Thoughpro-vidingstandardlibrary,butthestandardadviceforlibraryofboltthreadthroughlinearealldecorativethread
(thethreedimensionssolidline).Thecallofthestandardpartlibraryisnotaccuratewhencomingtoboltstressanalysis.Inordertosolvetheproblem,itmustestablishaccurate3Dentityontheboltthreadpart.Accordingtotheprincipleofdifferentialgeometryparameterequationandthehelixthreadprocessingprinciple,bySolidWorkssoftwarefortheplatform,andcombinedwiththesurfacemodelingsoftwareSolidWorksfunctionwithVBpro-grammingknowledge,establishcommonboltmale3Daccuratemodel.
Keywords:ordinaryouterthread;bolt;SolidWorks;3Daccuratemodel;VBprogramming