![]() ![]() “Hot” and “Highly Cited” articles (papers in top percentiles according to year, field and document types) are available from Essential Science Indicators integration. Institution’s variants and parent/child relationships are mapped and connected to a preferred institutional name through a manually curated process that is increasingly global in coverage.Įach collection is updated on its own schedule, ranging from daily to monthly.Ĭitation counts, and author h-index calculations. ![]() Other resources: Author indexing varies by resource.Īuthor affiliation indexing varies by collection. WoS Core Collection: All authors are indexed for all publications.Īuthors linked to affiliations from 2008–forward. > 34,200 journals plus books, proceedings, patents, and data setsġ55 million records (journals, books, and proceedings)ģ9.3 million patent families (> 70 million patents)įull cited reference indexing for all WoS Core Collection contentĬitation indexing for SciELO, Russian Science Citation Index, Chinese Science Citation Index, and BIOSIS Citation IndexĪll content includes times cited for citations from WoS Core Collection and platform Citation SourcesĮmerging Source Citation Index: 2005–presentĪll authors from all publications are indexed. > 20,900 journals plus books and conference proceedings Subject and regionally specialized indexes: WoS provides a common search language, navigation environment, and data structure, allowing researchers to search broadly across disparate resources and use citation connections to navigate to relevant research results.Ĭitation Indexes include the WoS Core Collection plus the following: The WoS Core Collection is the standard data set underpinning the journal impact metrics found in the Journal Citation Reports and the institutional performance metrics found in InCites. The WoS group has deepened its journal coverage, principally through the introduction of the Emerging Sources Citation Index (2015) ( Huang et al., 2017 Somoza-Fernandez et al., 2018), to give a more complete coverage of the most influential research while maintaining the balance across subjects and regions that underpins informed search and good analytics.Ĭitation indexes representing the connections between scholarly research articles found in globally significant journals, books, and proceedings in the sciences, social sciences and art & humanities.Ī platform providing access to multidisciplinary and regional citation indexes, specialist subject indexes, a patent family index, and an index to scientific data sets. More recently, the globalization of research has highlighted the relevance of local and regional journals for science that addresses societal needs. Garfield’s Law of Concentration generalized Bradford’s insights concerning specific fields to all fields of science and demonstrated the existence of a multidisciplinary core set of journals, then as few as 1,000. ![]() His decision was informed by Bradford’s Law of Scattering ( Bradford, 1934) as well as his own research on SCI data that revealed Garfield’s Law of Concentration ( Garfield, 1971, 1972). Computing power increased and digital dissemination reduced expenses, but selectivity remained a hallmark of coverage because Garfield had decided early on to focus on internationally influential journals. With the earliest versions of the SCI, journal selection was constrained by cost considerations, including computation and printing. ![]() Selectivity in coverage has long characterized the SCI, SSCI, and A&HCI, which were combined and launched on the World Wide Web as WoS in 1997. ![]()
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