Czech stemmer is pure Ruby port of CzechStemmer Java class from Lucene.
gem install czech-stemmer
require 'czech-stemmer'
CzechStemmer.stem("předseda") # => "předsd"
CzechStemmer.stem("mladými") # => "mlad"
Stemmer works only with lowercased letters in suffixes. Based on Lucene CzechStemmer
with all test passed. Note the difference between stemming and lemmatization.
Copyright (c) 2014 Ondrej Odchazel. See LICENSE.txt for further details.