Nori is a morphological analyzer for Korean text.

This module provides support for Korean text analysis, including features such as part-of-speech tagging, part-of-speech filtering, decompounding and hanja to hangul conversion.

For an introduction to Lucene's analysis API, see the org.apache.lucene.analysis package documentation.

Packages 
Package Description
org.apache.lucene.analysis.ko
Analyzer for Korean.
org.apache.lucene.analysis.ko.dict
Korean dictionary implementation.
org.apache.lucene.analysis.ko.tokenattributes
Additional Korean-specific Attributes for text analysis.
org.apache.lucene.analysis.ko.util
Nori utility classes.