A Stemming Algorithm for the Portuguese Language

Implements the "Stemming Algorithm for the Portuguese Language" .

This package uses the algorithm Stemming Algorithm for the Portuguese Language described in this article by Viviane Moreira Orengo and Christian Huyck.

The idea of the stemmer is very well explained by the following schema.

To install the package you can use the following:


The only important function of the package is the rslp function. You can call it on a vector of characters like this:

words <- c("balões", "aviões", "avião", "gostou", "gosto", "gostaram")

It works with vector of texts too, using the rslp_doc function.

docs <- c(
  "coma frutas pois elas fazem bem para a saúde.",
  "não coma doces, eles fazem mal para os dentes."
#> [1] "com frut poi ela faz bem par a saud." 
#> [2] "nao com doc, ele faz mal par os dent."


rslp 0.1.0

  • rslp is now returning a character vector without names
  • fixed a bug related to strigr_sub that wasn't returning expected result
  • fixed a bug that was eliminating the "a" as last letter from words in feminine reduction
  • added a new rule to steprules noun reduction ("ático" -> "")
  • corrected the noun reduction rule "atoria" -> "atória"
  • added a rule to remove the suffix "irá" in verb reduction
  • added a lot of tests

rslp 0.0.1

  • first CRAN release

Reference manual

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0.1.0 by Daniel Falbel, a year ago


Browse source code at https://github.com/cran/rslp

Authors: Daniel Falbel

Documentation:   PDF Manual  

MIT + file LICENSE license

Imports stringr, stringi, plyr, magrittr

Suggests dplyr, testthat, covr

Imported by ptstem.

See at CRAN