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Publication and Citation Analysis

working unit (university, research institute, company) has with Clarivate
Analytics. In the year 2011 Thomson Reuters launched a BCI, in 2012
the Data Citation Index and in 2015 the ESCI, extending the set of pub-
lications in the WoS to include more publications of regional importance
and in emerging scientific fields.
Thomson Reuters itself claimed that articles published in more than
20,000 journals are included in the WoS (McVeigh, 2010). Yet, exact
numbers change each year and objective values are hard to find.
Document retrieval in the WoS can be done by searching on
topics, authors, group names (as author), address, conference, lan-
guage, document type, funding agency and grant number. It is also
possible to adapt publication years. Only searching in one of the sub-
databases, e.g., A&HCI, is possible too. Yet, professionals prefer
Advanced Search. Searching in this mode allows more refined queries
than in basic search. When using Advanced Search prefixes such as
AU 5 (for an author search) or TS 5 (for a topic search) are used in
queries. Note that a topic search is performed in the title, abstract and
keyword sets, but for publications before 1991 no abstracts and key-
words are available. This may lead to an artefactual jump in the num-
ber of retrieved publications on a certain topic (Pautasso, 2014). Also
Boolean combinations are available, using AND, OR, NOT, and
SAME (to be used in the same record field). We suggest always using
Advanced Search. We note that Clarivate Analytics applies some auto-
matic lemmatization and unification of English and American language
(Rousseau, 2014a).
If one is interested in citations one must perform a Cited Reference
Search. Basic retrieval options are: cited author, cited work and cited
year(s).
Once a search has been performed the WoS provides a number of use-
ful tools.
Results can be viewed ranked according to:
• Date (this is the default) shown antichronologically.
• Times cited (useful for determining an h-index yourself).
• Recently added.
• Usage count.
• First author.
• Source title.
• Publication year.
• Conference title.