Nees Jan van Eck

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