国外图书情报类期刊热点主题及发展趋势研究

48情报分析与研究*(武汉大学信息管理学院武汉430072)(SOM)60JournalofInformationScience(JIS)1981-2007SOM!!!,607,SOM∀#,U-matrix,JIS27G353.21ResearchontheSalientSubjectsandTheirDevelopingTrendsofForeignLibraryandInformationScienceJournalsAnLuLiGang(SchoolofInformationManagement,WuhanUniversity,Wuhan430072,China)AbstractThispaperutilizestheSelf-OrganizingMap(SOM)toanalyzethesalientsubjectsamong60foreignjournalsinthefieldofLibraryandInformationScience(LIS)andthedevelopmenttrendsofJournalofInformationScience(JIS)from1981to2007.AnenhancedSOMdisplaymethodnamedAttributeAccumulativeMatrixisemployedtoidentify7groupsofsalientsubjectsamongthe60investigatedjournals.AnovelSOMdisplaymethodnamedPrevalentAttributeProjectionisconstructedcombinedwithU-matrix,toanalyzethedevelopmentprocessandpatternsofJIS∃salientsubjectsinthepast27years.TheresearchfindingsreflectthedevelopmentlawsofforeignLISjournalstosomeextent,andtheresearchmethodscanprovidesystematictoolandprocedurefortheanalysisofsalientsubjectsandtheirdevelopmenttrendsamongjournals.KeywordsSalientsubjectDevelopmenttrendsLibraryandinformationjournalsSOM:2010-07-06:2010-08-06*∀#(:20090460986)1,,,XIANDAITUSHUQINGBAOJISHU49,[1]2643,6562,[2]LISA12,[3]IRMJJASIST2003-2008,[4]JASIST1988-19971998-200710,,,,,,,,!!!(Self-OrganizingMap,SOM)SOM,,[5][6][7][8]SOM!!!,60,SOM∀#,U-matrix,2SOM2.1SOMSOMm%n,SOM,SOM:(1)-M1,mncij(i=1,2,&,m;j=1,2,&,n)ij,:M1=c11C12&c1nc21C22&c2n&cm1Cm2&cmn(1)(2)-M2,pqdkl(k=1,2,&,p;l=1,2,&,q)kl,:M2=d11d12&d1qd21d22&d2q&dp1dp2&dpq(2)2.2SOM:U-matrix(ComponentPlane)SOM[9],SOM,SOM,,-M1SOM,[10]∀#SOM,SOM,,,SOM,SOM,SOM(),,2.3,∀#,:l,n,v1,v2,&,vn,n,l,总第197期2010年第9期50SOM,SOM,,nSOM,P1;,P2,SSOM(:l,n),m,isi(i=1,2,&,m),n,wi1,wi2,&,win,n,P1vj1,vj2&,vjp,P2vk1,vk2,&,vkq,P3vl1,vl2,&vlr,X,Y,Z,,i=1,2,&,m:X=(∋jpt=j1wit)((3)Y=(∋kqt=k1wit)((4)Z=(∋lrt=l1wit)((5)(3)-(5),X,Y,ZSOMX,Y,Z,l,nSOM,M2,-,SOM,P1,P1,P1,P1,33.1ProQuestResearchLibrary(ProQuest),,,,,SCI/SSCI,60(1)2006-200812415,3952(1)M1,-SOM,03951SOM,M1)var∃[11];[12],,SOMSOM,SOM,,1:图1国外图书情报类期刊的主题SOM输出1,33,SOM,(),()SOM,SOMM1,1,XIANDAITUSHUQINGBAOJISHU51,SOM,,1,4∀#(,),(SOM),1,,s(,ij)(i=1,2,&,22,j=1,2,&,15)ijSOM1SOMSOM0.8s(1,1)13_Academic_libraries,1016_Digital_libraries,2081_Librarians,2082_Libraries,2086_Library_sciences(22,1)356_Book_reviewss(22,2)1850_Information_technologys(1,2)3509_Studies0.7-0.8s(21,1)2491_Nonfictions(21,15)357_Bookss(22,14)738_Conferences,922_Data_bases,2056_Learning,3594_Technological_change,3877_Web_sitess(2,1)1841_Information_managements(1,14)636_Colleges_&_universities,1840_Information_literacy,2084_Library_collections,3110_Researchs(22,3)1849_Information_systems,2360_Modelss(2,15)2085_Library_resources0.6-0.7s(22,13)3403_Softwares(2,2)1844_Information_retrieva,l1920_Internet0.5-0.6s(1,3)2009_Knowledge_managements(1,13)635_College_students,1140_Education,1689_Higher_education,3057_Reference_services,3113_Research_&_development--R&D,3115_Research_methodology,3508_Studentss(21,13)1843_Information_professionalss(2,14)178_Archives_&_records,1190_Electronic_publishing,1988_Journals,2083_Library_cataloging,2305_Metadatas(20,15)1705_Historys(22,12)480_Case_studies,1924_Internet_resources,3255_Search_engines,3256_Searches,3383_Social_networkss(22,4)656_Communication,2584_Organizational_behavior,2662_Performance_evaluations(20,1)301_Bibliographic_literature,2962_Publishing_industry0.35-0.5s(21,12)3879_Weblogss(21,4)949_Decision_making,3471_Statistical_analysiss(2,13)624_Collectionss(20,13)211_Associations,2052_Leadership,2287_Meetings,2876_Professional_developments(1,12)287_Behavior,1055_Distance_learning,2551_Online_instruction,3588_Teaching_methodss(22,5)3559_Systems_designs(3,15)1103_E-books,1235_Encyclopedias,3055_Reference_books,3221_Scholarly_publishings(22,11)1629_Guidelines,1846_Information_sharing,1922_Internet_access,2547_Online_data_bases,2550_Online_information_services,2557_Open_source_software,3875_Web_site_designs(3,1)2761_Polls_&_surveyss(21,5)981_Designs(2,3)682_Comparative_analysis,2659_Perceptions,3934_World_Wide_Webs(21,11)3873_Web_portalss(20,12)805_Copyrigh,t1321_Executives,1836_Information_centers,1839_Information_industry,2221_Marketing1,3952,86,2%1SOM,,:(1),;(2),;(3),总第197期2010年第9期52;(4),;(5),;(6),(Studies)(Research);(7),;(8),,[13][14],[13]SOM731992-1997,4,[13]4,,[14]12,12,OPAC,,,,,[14],,3.2,!!!JournalofInformationScience(JIS),JIS,SCISCCI,JCR,20081.648,ProQuest19812007,990,(2)M2,-,27,990)var∃,,,SOM,SOM(U-matrix)SOM,,SOM,,2:图21981-2007年JIS期刊的SOM图2,,1981;,200796SOM,70,26SOMU-matrix,U-matrix,;U-matrix,,JISU-matrix,,1982-1985,1995-2007,JIS,,2090,XIANDAITUSHUQINGBAOJISHU53,JIS,198219835(41),198519864,,1999-2000,2001-20021,2006-20070,1981-20076,,63.2,3.6,3,2.8,2.3,JIS,2090,U-matrix2:2U-matrix6U-matrix619810.75-0.8-19820.8-0.85219830.95519840.95-1219850.8-0.85319860.7-0.7543.219870.65-0.7119880.85-0.9319890.7-0.75419900.75-0.8419910.7-0.7563.619920.65-0.7419930.65-0.7219940.7-0.75319950.65419960.652319970.65-0.7419980.65319990.7-0.75320000.7-0.75120010.6532.820020.7120030.8420040.65420050.7320060.65220070.6502.3,SOM:(LIB)(