visualization vosviewer citnetexplorer bibliometrics network analysis community detection bibliometric network citation network clustering classification system layout big data mapping modularity optimization scientometrics co-citation bibliographic coupling data science citation bibliometric mapping science mapping term map normalization leiden ranking web of science university bibliographic data scopus crossref literature review references network science scientific literature publishing open access license information funding information source normalization affiliation sti14 sti2014 extended counting field normalization multiplicative approach fractional counting citation analysis counting method citation indicator full counting source normalization vosviewe source normalization algorithm networks author bibliographic database classification orcid abstract wetenschappelijke literatuur bibliometrische visualisaties publisher metadata bootstrapping disambiguation data accuracy software tools editors journal editors journal publishers journals publishers reference extraction citation matching university ranking responsible metrics software tool co-occurrence analysis full-text citation data collaboration cwts impact research performance scientific performance citations ranking publications network visualization layout technique open citations network pubmed dimensions co-occurrence biblimetric network stable clusters
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