The SCImago Institutions Rankings (SIR) is a classification of academic and research-related institutions ranked by a composite indicator that combines three different sets of indicators based on research performance, innovation outputs and societal impact measured by their web visibility.

SCImago Standardization: In order to achieve the highest level of precision for the different indicators, an extensive manual process of disambiguation of the institution’s names has been carried out. The development of an assessment tool for bibliometric analysis aimed to characterize research institutions involves  an  enormous  data  processing  task  related  to  the  identification  and  disambiguation  of institutions  through  the  institutional  affiliation  of  documents  included  in  Scopus.

The objective of SCImago, in this respect, is twofold:

1. Definition  and  unique  identification  of  institutions:  The  drawing  up  of  a  list  of  research institutions where every institution is correctly identified and defined. Typical issues on this task include institution’s merge or segregation and denomination changes.
2. Attribution of publications and citations to each institution. We have taken into account the institutional  affiliation  of  each  author  in  the  field  ‘affiliation’  of  the database.  We have developed a mixed system (manual and automatic) for the assignment of affiliations to one or more institutions, as applicable. As well as an identification of multiple documents with the same DOI and/or title.

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