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fastTopics

Fast Algorithms for Fitting Topic Models and Non-Negative Matrix Factorizations to Count Data

v0.7-38 · Feb 13, 2026 · BSD_2_clause + file LICENSE

Description

Implements fast, scalable optimization algorithms for fitting topic models ("grade of membership" models) and non-negative matrix factorizations to count data. The methods exploit the special relationship between the multinomial topic model (also, "probabilistic latent semantic indexing") and Poisson non-negative matrix factorization. The package provides tools to compare, annotate and visualize model fits, including functions to efficiently create "structure plots" and identify key features in topics. The 'fastTopics' package is a successor to the 'CountClust' package. For more information, see <doi:10.48550/arXiv.2105.13440> and <doi:10.1186/s13059-023-03067-9>. Please also see the GitHub repository for additional vignettes not included in the package on CRAN.

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r-release-windows-x86_64 OK
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for GNU extensions in Makefiles

GNU make is a SystemRequirements.
NOTE r-oldrel-macos-arm64

installed package size

  installed size is 14.3Mb
  sub-directories of 1Mb or more:
    data   7.2Mb
    doc    1.9Mb
    libs   4.7Mb
NOTE r-oldrel-macos-x86_64

for GNU extensions in Makefiles

GNU make is a SystemRequirements.
NOTE r-oldrel-macos-x86_64

installed package size

  installed size is 14.5Mb
  sub-directories of 1Mb or more:
    data   7.2Mb
    doc    1.9Mb
    libs   4.8Mb
NOTE r-oldrel-windows-x86_64

for GNU extensions in Makefiles

GNU make is a SystemRequirements.
NOTE r-oldrel-windows-x86_64

installed package size

  installed size is  9.8Mb
  sub-directories of 1Mb or more:
    data   6.2Mb
    doc    1.9Mb
    libs   1.2Mb
OK r-patched-linux-x86_64

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OK r-release-linux-x86_64

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OK r-release-macos-arm64

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OK r-release-macos-x86_64

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OK r-release-windows-x86_64

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Check History

NOTE 11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 9, 2026
NOTE r-oldrel-macos-arm64

installed package size

  installed size is 14.3Mb
  sub-directories of 1Mb or more:
    data   7.2Mb
    doc    1.9Mb
    libs   4.7Mb
NOTE r-oldrel-macos-x86_64

installed package size

  installed size is 14.5Mb
  sub-directories of 1Mb or more:
    data   7.2Mb
    doc    1.9Mb
    libs   4.8Mb
NOTE r-oldrel-windows-x86_64

installed package size

  installed size is  9.8Mb
  sub-directories of 1Mb or more:
    data   6.2Mb
    doc    1.9Mb
    libs   1.2Mb

Dependency Network

Dependencies Reverse dependencies Matrix gtools quadprog irlba dplyr Rtsne uwot ashr Rcpp RcppParallel RhpcBLASctl progress pbapply rlang ggplot2 +5 more dependencies fastTopics

Version History

new 0.7-38 Mar 9, 2026