A guide to the Nature Index

"The Nature Index uses Count and Share to track research output. A country or institution receives a Count of 1 for each article with at least one author from that entity, regardless of the total number of authors."

"Share is a fractional count that reflects the contribution of each author to an article, ensuring that no entity is counted more than once. The total Share per article is 1, divided among authors based on their number."

The Nature Index is a database that monitors author affiliations and institutional relationships, focusing on contributions to high-quality research articles. It provides absolute and fractional counts of publications at institutional and national levels, serving as an indicator of global research output and collaboration. The Count metric assigns a value of 1 for each article with an author from a specific institution or country, while the Share metric allocates fractional contributions based on authorship. Data is regularly updated and available under a Creative Commons license.

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