What is Category Normalised Citation Impact (CNCI)?
Citation rates vary across disciplines, change over time and different publication types have different citation behaviours. For accuracy and fairness, citation data should be normalised by discipline, year and publication type, making it an unbiased indicator of impact.
The Category Normalised Citation Impact (CNCI) used by InCites measures the impact of an article or the impact of a researcher in a particular subject area. It is measured by taking the number of citations a single article has, or the average number of citations for a group of articles, and compares it to the average number of citations for all articles in that subject area.
CNCI can also apply across several fields although it is a more meaningful metric if it is only for a single subject area.
A CNCI of 1 would be on par with the average citations for the subject area; more than 1 would be above average; and anything below 1 would be less than average.
*Note: The CNCI in InCites is exactly the same as the Field Weighted Citation Impact (FWCI) used by SciVal.
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