org.apache.lucene.analysis.cjk.package-info Maven / Gradle / Ivy
/*
* 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 analyzers/cn package): Index unigrams (individual Chinese characters) as a token.
*
- CJKAnalyzer (in this package): Index bigrams (overlapping groups of two adjacent Chinese characters) as tokens.
*
- SmartChineseAnalyzer (in the analyzers/smartcn package): Index words (attempt to segment Chinese text into words) as tokens.
*
*
* Example phrase： "我是中国人"
*
* - ChineseAnalyzer: 我－是－中－国－人
* - CJKAnalyzer: 我是－是中－中国－国人
* - SmartChineseAnalyzer: 我－是－中国－人
*
*/
package org.apache.lucene.analysis.cjk;