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Dirk Eddelbuettel: RcppAnnoy 0.0.23 on CRAN: Several Updates

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Dirk Eddelbuettel: RcppAnnoy 0.0.23 on CRAN: Several Updates

annoy image

A new release, now at version 0.0.22, of RcppAnnoy
has arrived on CRAN, just a
little short of two years since the previous release.

RcppAnnoy
is the Rcpp-based R integration of
the nifty Annoy library
by Erik Bernhardsson. Annoy is a small and
lightweight C++ template header library for very fast approximate
nearest neighbours—originally developed to drive the Spotify music discovery algorithm. It
had all the buzzwords already a decade ago: it is one of the algorithms
behind (drum roll 
) vector search as it finds
approximate matches very quickly and also allows to
persist the data.

This release contains three contributed pull requests covering a new
metric, a new demo and quieter compilation, some changes to
documentation and last but not least general polish including letting
the vignette now use the Rcpp::asis builder.

Details of the release follow based on the NEWS file.

Changes in version 0.0.23
(2026-01-12)

  • Add dot product distance metrics (Benjamin James in #78)

  • Apply small polish to the documentation (Dirk closing #79)

  • A new demo() has been added (Samuel Granjeaud in #79)

  • Switch to Authors@R in DESCRIPTION

  • Several updates to continuous integration and README.md

  • Small enhancements to package help files

  • Updates to vignettes and references

  • Vignette now uses Rcpp::asis builder (Dirk in #80)

  • Switch one macro to a function to avoid a compiler nag (Amos
    Elberg in #81)

Courtesy of my CRANberries, there
is also a diffstat report for this
release.

This post by Dirk
Eddelbuettel originated on his Thinking inside the box
blog. If you like this or other open-source work I do, you can sponsor me at
GitHub.