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sentencepiece

Text Tokenization using Byte Pair Encoding and Unigram Modelling

v0.2.5 · Feb 9, 2026 · MPL-2.0

Description

Unsupervised text tokenizer allowing to perform byte pair encoding and unigram modelling. Wraps the 'sentencepiece' library <https://github.com/google/sentencepiece> which provides a language independent tokenizer to split text in words and smaller subword units. The techniques are explained in the paper "SentencePiece: A simple and language independent subword tokenizer and detokenizer for Neural Text Processing" by Taku Kudo and John Richardson (2018) <doi:10.18653/v1/D18-2012>. Provides as well straightforward access to pretrained byte pair encoding models and subword embeddings trained on Wikipedia using 'word2vec', as described in "BPEmb: Tokenization-free Pre-trained Subword Embeddings in 275 Languages" by Benjamin Heinzerling and Michael Strube (2018) <http://www.lrec-conf.org/proceedings/lrec2018/pdf/1049.pdf>.

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CRAN Check Status

3 NOTE
11 OK
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Flavor Status
r-devel-linux-x86_64-debian-clang OK
r-devel-linux-x86_64-debian-gcc OK
r-devel-linux-x86_64-fedora-clang OK
r-devel-linux-x86_64-fedora-gcc OK
r-devel-macos-arm64 OK
r-devel-windows-x86_64 OK
r-oldrel-macos-arm64 NOTE
r-oldrel-macos-x86_64 NOTE
r-oldrel-windows-x86_64 NOTE
r-patched-linux-x86_64 OK
r-release-linux-x86_64 OK
r-release-macos-arm64 OK
r-release-macos-x86_64 OK
r-release-windows-x86_64 OK
Check details (14 non-OK)
OK r-devel-linux-x86_64-debian-clang

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OK r-devel-linux-x86_64-debian-gcc

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OK r-devel-linux-x86_64-fedora-clang

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OK r-devel-linux-x86_64-fedora-gcc

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OK r-devel-macos-arm64

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OK r-devel-windows-x86_64

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NOTE r-oldrel-macos-arm64

installed package size

  installed size is 21.6Mb
  sub-directories of 1Mb or more:
    libs    19.9Mb
    models   1.6Mb
NOTE r-oldrel-macos-x86_64

installed package size

  installed size is 23.1Mb
  sub-directories of 1Mb or more:
    libs    21.3Mb
    models   1.6Mb
NOTE r-oldrel-windows-x86_64

installed package size

  installed size is  5.0Mb
  sub-directories of 1Mb or more:
    libs     3.3Mb
    models   1.6Mb
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 21.6Mb
  sub-directories of 1Mb or more:
    libs    19.9Mb
    models   1.6Mb
NOTE r-oldrel-macos-x86_64

installed package size

  installed size is 23.1Mb
  sub-directories of 1Mb or more:
    libs    21.3Mb
    models   1.6Mb
NOTE r-oldrel-windows-x86_64

installed package size

  installed size is  5.0Mb
  sub-directories of 1Mb or more:
    libs     3.3Mb
    models   1.6Mb

Reverse Dependencies (1)

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Dependency Network

Dependencies Reverse dependencies Rcpp textrecipes sentencepiece

Version History

new 0.2.5 Mar 9, 2026