Snowball English

This package implements the English language Snowball stemmer.

Implementation

The English language stemmer comprises preprocessing, a number of steps, and postprocessing. Each of these is defined in a separate file in this package. All of the steps operate on a SnowballWord from the snowballword package and modify the word in place.

Caveats

There is a single difference between this implementation and the original. Here, all apostrophes on the left hand side of a word are stripped off before the word is stemmed.