| complete_stems | Complete Stems |
| extract_words | Extract words Extracts all words from a character string of texts. |
| overstemming_index | Overstemming Index (OI) |
| performance | Performance |
| ptstem | Stem Words |
| ptstem_words | Stem Words |
| stem_hunspell | Stemming using Hunspell |
| stem_modified_hunspell | Stemming with small modification of Hunspell |
| stem_porter | Stem using Porter's |
| stem_rslp | Stemming using RSLP |
| understemming_index | Understemming Index (UI) |
| unify_stems | Unify stems by mean position |