医学信息检索概述ppt课件

MedicalInformationRetrieval,HaoDongmeiCollegeofLifeScienceandBioengineering,1,Outline,BackgroundReferencePreface,2,Background,BilingualcourseReasonsInternationalCompetitionTechnologyDevelopmentGovernmentPolicySubjectRequirementObjectiveAcquire,analyze*,useTheaimistoequipyouwithanunderstandingofthenatureofmedicalbiologicalbiomedicalliteratureandtheskillsrequiredtoretrieveinformation.,3,Background,*author,publishingyear,publisher,review,contentSpecialEnglishLearningOutcomeArrangementLectures14teaching-hoursPractice14teaching-hoursAssessment4teaching-hours,4,Background,AssessmentLecturesPracticeReportReviewPresentationinEnglishSuggestionsNotebookPractice,5,Reference,1.董建成，周晓正.医学信息检索教程，东南大学出版社，2002年8月第1版。2.周毅华，现代医学信息检索与利用，东南大学出版社，2002年2月第1版。3.朱丽君，信息资源检索与应用，化学工业出版社，2004年8月第1版。4.WilliamR.Hersh,InformationRetrieval:AHealthandBiomedicalPerspective,Springer-VerlagNY/HealthInformatics,January20032ndEdition,6,Preface,DefinitionCategoryLanguageApproachTechniqueEffectiveness,7,Definition,Simplisticdefinition:Medicalinformaticsistheapplicationofcomputers,communicationsandinformationtechnologyandsystemstoallfieldsofmedicine-medicalcare,medicaleducationandmedicalresearch.MFCollen,MEDINFO80,Tokyo,8,Definition,Medicalinformaticsistherapidlydevelopingscientificfieldthatdealswithresources,devicesandformalizedmethodsforoptimizingthestorage,retrievalandmanagementofbiomedicalinformationforproblemsolvinganddecisionmaking.EdwardShortliffe,M.D.,Ph.D.Whatismedicalinformatics?StanfordUniversity,1995.,9,DefinitionCategoryLanguageApproachTechniqueEffectiveness,10,Category,InformationSourcesPrintedDocumentBooksGeneral,well-establishedinformationBecomeoutofdateMonographSeriesTextbookReferenceBook;ReferenceSource：,11,Category,Encyclopaedias:overview,manysubjects,manyaspectsofonesubjectsDictionaries:definitions,briefdescription,i.epathologyorenvironmentStatisticaltables:datainnumericalformi.e.OfficeforNationalStatistics:Mortalitystatistics:causeanannualpublicationThesaurus:abookthatlistswordsingroupsofsynonymsandrelatedconceptsDirectories:listsofnamesororganizationsgivingaddresses,telephonenumbersandothergeneralinformationaboutapersonoranorganization,12,Category,Discussionlists:Theseareliststhatenableyoutoconferwithcolleaguesviae-mail.Periodical;Journali.journalsdevotedtonews,opinionandcommentExample:NewScientistii.journalsdevotedtooriginalcontributionsExample:TheAmericanJournalofHumanGeneticsiii.reviewjournalsExample:TrendsinCellBiology,13,Category,SpecialDocumentGovernmentPublicationScientificProceedingsDissertationTechnicalArchives,14,Category,MicrocopyVideoandaudio,15,Category,ElectronicDocumentontheInternetonaCDROMelectronicpaperbookExamplesinclude:AmericanJournalofHumanGenetics(http:/www.journals.uchicago.edu/AJHG/journal/)MolecularBiologyandEvolution(http:/intl.molbiolevol.org/),16,Category,PrimaryLiteratureOriginalcontributionSecondaryLiteratureTertiaryLiterature,17,1)Inwhichinformationsourcewouldyoufindadefinitionofasubject?.AjournalAdictionaryApharmacopoeia2)Inwhichinformationsourcewouldyoufindanaddress?AstatisticaltableAdiscussionlistAdirectory3)Inwhichinformationsourcewouldyoufindstatisticalinformation?AdictionaryAstatisticaltableAprofessionalcolleague,Quiz1-Oneansweronly.,18,4)Inwhichinformationsourcewouldyoufindawell-establishedinsightintoasubject?AnelectronicjournalAdictionaryAtextbook5)Inwhichinformationsourcewouldyoufinduptodate,peer-reviewedresearch?AjournalAbookTheInternet6)Inwhichinformationsourcewouldyoufindthelatestdiscussiononarecentlyairedpieceofresearch?TheInternetAdiscussionlistAdictionary,Quiz1,19,DefinitionCategoryLanguageApproachTechniqueEffectiveness,20,Language,ClassificationSubjectCode,21,Classification,用分类号表达文献中的各种概念，按学科、专业对各种概念加以分类和系统排列的文献检索语言。美国国会图书馆图书分类法、中国图书馆分类法、国际疾病分类法等,22,Classification,中图法第四版将文献知识分为5大部类，即马、列、毛泽东思想；哲学；社会科学；自然科学；综合性图书。下分22个基本大类。例如O：数理科学、化学Q：生物科学R：医药卫生每个类目采用拉丁字母和阿拉伯数字相结合的混合号码,23,Classification,R医药、卫生（17个二级类目）1预防医学、卫生学2中国医学3基础医学4临床医学5内科学6外科学71妇产科学72儿科学73肿瘤学74神经病学与精神病学75皮肤病学与性病学76耳鼻咽喉科学77眼科学78口腔科学79外国民族医学8特种医学9药学,24,Classification,每个类目还可细分至六、七级类目，如：R6外科学R65外科学各论R655胸部外科学R655.1胸壁R655.2胸膜R656腹部外科学R656.1急腹症R656.2腹部疝R656.3腹壁R656.31腹壁炎症R656.32腹壁损伤,25,Subject,规范化语言（ControlledVocabulary）是指对文献检索用语的概念加以人工控制和规范，把检索语言中各种同义词、多义词、近义词、同形异义词等进行规范化处理，使每个检索词只能表达一个概念。非规范化语言（Freetext）对检索用语中的各种同义词、多义词、近义词、同形异义词等不加处理，所以也叫自然语言，如关键词。,26,Keyword,FreetextsearchingOccurrenceofawordorphrasewithinthetitle,abstractorfulltext.MaynotberelevantDifferentwaysofspellingawordandthinkaboutsynonymsforthatword.,27,SubjectHeading,SubjectHeading(Descriptor)ControlledVocabularyMorepreciseThewordorphrasesearchedwillnotnecessarilyappearinthetitleorabstractofthearticleonthedatabase.i.e.thecontrolledvocabularytermforcotdeathonMedlineissuddeninfantdeath.Searchingbysuddeninfantdeath,onMedline,youwillretrievearticlesoncotdeath.,28,MedicalSubjectHeadings(MeSH),NationalLibraryofMedical,NLMUsedinindexingarrangedinalphabeticalorderOrganisedintoahierarchicalstructurecalledatreei.e.CardiovascularDiseasesHeartDiseasesArrhythmiaArrhythmia,sinusAtrialfibrillationBradycardiaCardiaccomplexes,prematureAtrialprematurecomplexes,29,MeSH,SubheadingsareavailabletomodifyaMeSHterm,increasethespecificityofthesearchdiagnosis,therapy,adverseeffects,statisticsandnumericaldata.i.e.aspirin/therapy;cold/drugtherapy,30,KeywordandSH,例：检索“心血管疾病微量元素的代谢”自由词检索结果：(CBMdisc)序号命中文献数检索表达式#12120心血管疾病#21857微量元素#311684代谢#40#1and#2and#3#57#1and#2主题词检索#12399心血管疾病扩展全部树/血液、脑脊髓液、代谢、尿#2771痕量元素扩展全部树/血液、脑脊髓液、代谢、尿#347#1and#2,31,DefinitionCategoryLanguageApproachTechniqueEffectiveness,32,Approach,TitleIndexAuthorIndexNumberIndexClassifiedIndexKeywordIndexSubjectIndexClassifiedsubjectIndex,33,DefinitionCategoryLanguageApproachTechniqueEffectiveness,34,RetrievalTechnique,Spelling,TerminologyandTruncationBooleanOperatorsLimitsPlanning,35,Spelling,TerminologyandTruncation,differencesinterminologyandspelling.Forexample:AmericanEnglishbehaviorbehaviourfetalfoetalagingageingneoplasmcancer,36,Spelling,TerminologyandTruncation,synonymsandacronymsSynonymsappearance/morphology;Acronymscauliflowermosaicvirus=CaMVyeastartificialchromosome=YAC,37,Spelling,TerminologyandTruncation,truncationsearching(*,$)（wildcardsearching）Forexample:evol*willfindevolve/evolving/evolution/evolutionary/evolveddiseas$willfinddisease/diseases/diseasedcolo$rwillfindcolor/colour,38,1)WhatworddotheAmericansmorecommonlyusetodescribecancer?Oneansweronly.A.CancerB.NeoplasmC.Lymphoma,2)Whatistheacronymforadenosinetriphosphate?(Oneansweronly)A.ATB.ATPC.A,3)WhatistheBritishspellingofbehavior?(Oneansweronly)A.BehaviourB.BehaviorC.Behavivor,Quiz2,39,4)WhichofthefollowingwillberetrievedusingDevelop*?(3options)A.DevelopmentB.DevolvingC.DevelopingD.DevelopedE.DelvingF.Devil,5)WhichofthefollowingwillberetrievedusingCell*?(3options)A.CellsB.CallsC.CeleryD.CellularE.Celluloid,6)WhichofthefollowingwillberetrievedusingMicro*?(5options)A.MicroscopeB.MicroscopicC.MicrobeD.MicraE.MicrobialF.Microwave,40,BooleanOperators,41,42,WhatBooleanoperatorwouldyouusetocombinethefollowingsearchterms,FruitFlies_Drosophilamelanogaster:,2)WhatBooleanoperatorwouldyouusetocombinethefollowingsearchterms,Morphology_Appearance:,3)WhatBooleanoperatorwouldyouusetocombinethefollowingsearchterms,genes_eyecolour:,4)Toexcludearticlesthatusethetermredeyes,whatBooleanoperatorwouldyouuse?Oneansweronly.ANDORNOT,Quiz3,43,Limits,tobeveryspecificrefineyoursearchLanguageYear:i.e.recentarticlespublishedinthelasttwoyearsPublicationtypejournalarticle,review,clinicaltrial,letter,editorialetcAgeGroup:babies,adults,oldsGender,human,animalHuman,maleorfemale;ortoanimals,ormorespecificallytoananimaltype,rat,dog,mouseetc.,44,Tolimitasearchtotheincidenceoflateonsetdiabetesinwomen,whichofthefollowingwouldyouuse?Choose2ofthefollowingoptionsA.LanguageB.PublicationTypeC.FemaleD.MaleE.AgeGroup,2)TolimitasearchtoinformationonmitochondriaresearchinEnglish,whichofthefollowingwouldyouuse?OneansweronlyA.LatinB.LanguageC.EnglishLanguageD.FrenchE.German,Quiz4,45,3)Tolimitasearchtoarticleswritteninthelastyearonplantpathology,whichofthefollowingwouldyouuse?Choose2ofthefollowingoptions.A.HumanB.PublicationYearC.PublicationTypeD.LanguageE.Animal,4)Tolimitasearchtoconferencepapersgivenontheethicsofgeneticresearch,whichofthefollowingwouldyouuse?Oneansweronly.A.LanguageB.AgeGroupC.PublicationTypeD.PublicationYearE.Fulltext,46,Planningyourliteraturesearch,Think:Whatareyoutryingtoretrieveinformationabout?Analyse:Whatarethekeyelementsofthetopic?Synonyms:Cantheseelementsbedescribedinanyotherway,alternatephrases,terms,cantheybespeltdifferently?Combine:Howwouldyoucombinethesesetstogether?Limit:Canyouuseanylimitstorefineyoursearch?,47,Planningyourliteraturesearch,E.X.Lookforresearchinthelast5yearsabouttheevolutionarygeneticsoftheEasternGreySquirrel.,Evolutionary,Genetics,Grey,Squirrel,Keywords:,Synonyms:,Evolution,Evolved,Evolving,Gene,Genes,Genetically,Sciuruscarolinensis,squirrels,grey,gray.,Truncation:,Evol*,Gene*,Squirrel*,Gr$y,Combiningsets:,(gr$yandsquirrel*)orsciuruscarolinensisgene*andevol*,Last5years,EnglishLanguage,Limits:,48,Limit5to1995-andEnglishLanguage,6,1and2and(3or4),5,Combinesets:,sciuruscarolinensis,4,gr*ysquirrel*,3,gene*,2,evol*,1,evol*andgene*and(gr?ysquirrel*orsciuruscarolinensis),2,LimittoScienceCitationdatabaseandlastfiveyears,1,strategyintheBIOSISpreviewsdatabases,strategyintheWebofScience(SCI),49,DefinitionCategoryLanguageApproachTechniqueEffectiveness,50,RetrievalEffectiveness,RecallRatioR=a/(a+c)*100%PrecisionRatioP=a/(a+b)*100%a检出的相关文献数；b检出的非相关文献数；c未检出的相关文献数。实践证明：R：60%79%，P:40%50%检索效果较佳。,51,Vocabulary,52,