https://cran.r-project.org/web/packages/ircor/index.html
CRAN: Package ircor
Provides implementation of various correlation coefficients of common use in Information Retrieval. In particular, it includes Kendall (1970, isbn:0852641990)...
cranpackage
https://www.r-project.org/nosvn/R.check/r-patched-linux-x86_64/ircor-00check.html
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