English and Russian lemmatizer for Node.js, based on lemmatizer.org project.
Lemmatization is a process of finding lemma (main form) and part of speech (e. g. noun, verb, adjective) for a word. This is useful for the purposes of natural language processing, e.g. fact extraction, indexing for full-text search, etc.
Some words have several lemmas. These are so-called homonyms, groups of words which have the same spelling (and often pronounciation) but have different meanings.
English:
- uses -> USE
- fought -> FIGHT
- found -> FIND, FOUND
Russian:
- ешь -> ЕСТЬ
- стулья -> СТУЛ
- белок -> БЕЛОК, БЕЛКА
var Lemmer = require('node-lemmer').Lemmer;
var lemmerEng = new Lemmer('english');
lemmerEng.lemmatize('fought');
var lemmerRus = new Lemmer('russian');
lemmerRus.lemmatize('белок');LGPL