---
uid: Lucene.Net.Analysis.Cjk
summary: *content
---

<!--
 Licensed to the Apache Software Foundation (ASF) under one or more
 contributor license agreements.  See the NOTICE file distributed with
 this work for additional information regarding copyright ownership.
 The ASF licenses this file to You under the Apache License, Version 2.0
 (the "License"); you may not use this file except in compliance with
 the License.  You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-->

Analyzer for Chinese, Japanese, and Korean, which indexes bigrams. 
This analyzer generates bigram terms, which are overlapping groups of two adjacent Han, Hiragana, Katakana, or Hangul characters.

 Three analyzers are provided for Chinese, each of which treats Chinese text in a different way.

* ChineseAnalyzer (in the Lucene.Net.Analysis.Cn namespace): Index unigrams (individual Chinese characters) as a token.
* CJKAnalyzer (in the Lucene.Net.Analysis.Cjk namespace): Index bigrams (overlapping groups of two adjacent Chinese characters) as tokens.
* SmartChineseAnalyzer (in the Lucene.Net.Analysis.SmartCn package): Index words (attempt to segment Chinese text into words) as tokens.

Example phrase： "我是中国人"

1. ChineseAnalyzer: 我－是－中－国－人
2. CJKAnalyzer: 我是－是中－中国－国人
3. SmartChineseAnalyzer: 我－是－中国－人 