Restructure README.md
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David Yun
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README.md
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README.md
@ -1,253 +1,263 @@
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IK Analysis for ElasticSearch
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==================================
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更新说明：
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对于使用es集群，用ik作为分词插件，经常会修改自定义词典，增加远程加载，每次更新都会重新加载词典，不必重启es服务。
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The IK Analysis plugin integrates Lucene IK analyzer into elasticsearch, support customized dictionary.
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Tokenizer: `ik`
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Version
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-------------
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master | 1.5.0 -> master
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1.4.0 | 1.6.0
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1.3.0 | 1.5.0
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1.2.9 | 1.4.0
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1.2.8 | 1.3.2
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1.2.7 | 1.2.1
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1.2.6 | 1.0.0
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1.2.5 | 0.90.2
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1.2.3 | 0.90.2
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1.2.0 | 0.90.0
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1.1.3 | 0.20.2
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1.1.2 | 0.19.x
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1.0.0 | 0.16.2 -> 0.19.0
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Thanks
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-------------
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YourKit supports IK Analysis for ElasticSearch project with its full-featured Java Profiler.
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YourKit, LLC is the creator of innovative and intelligent tools for profiling
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Java and .NET applications. Take a look at YourKit's leading software products:
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<a href="http://www.yourkit.com/java/profiler/index.jsp">YourKit Java Profiler</a> and
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<a href="http://www.yourkit.com/.net/profiler/index.jsp">YourKit .NET Profiler</a>.
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Install
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-------------
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you can download this plugin from RTF project(https://github.com/medcl/elasticsearch-rtf)
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https://github.com/medcl/elasticsearch-rtf/tree/master/plugins/analysis-ik
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https://github.com/medcl/elasticsearch-rtf/tree/master/config/ik
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<del>also remember to download the dict files,unzip these dict file into your elasticsearch's config folder,such as: your-es-root/config/ik</del>
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you need a service restart after that!
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Dict Configuration (es-root/config/ik/IKAnalyzer.cfg.xml)
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-------------
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https://github.com/medcl/elasticsearch-analysis-ik/blob/master/config/ik/IKAnalyzer.cfg.xml
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<pre>
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE properties SYSTEM "http://java.sun.com/dtd/properties.dtd">
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<properties>
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<comment>IK Analyzer 扩展配置</comment>
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<!--用户可以在这里配置自己的扩展字典 -->
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<entry key="ext_dict">custom/mydict.dic;custom/single_word_low_freq.dic</entry>
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<!--用户可以在这里配置自己的扩展停止词字典-->
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<entry key="ext_stopwords">custom/ext_stopword.dic</entry>
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<!--用户可以在这里配置远程扩展字典 -->
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<entry key="remote_ext_dict">location</entry>
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<!--用户可以在这里配置远程扩展停止词字典-->
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<entry key="remote_ext_stopwords">location</entry>
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</properties>
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</pre>
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Analysis Configuration (elasticsearch.yml)
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-------------
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<pre>
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index:
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analysis:
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analyzer:
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ik:
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alias: [ik_analyzer]
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type: org.elasticsearch.index.analysis.IkAnalyzerProvider
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ik_max_word:
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type: ik
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use_smart: false
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ik_smart:
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type: ik
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use_smart: true
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</pre>
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Or
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<pre>
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index.analysis.analyzer.ik.type : "ik"
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</pre>
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you can set your prefer segment mode,default `use_smart` is false.
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Mapping Configuration
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-------------
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Here is a quick example:
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1.create a index
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<pre>
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curl -XPUT http://localhost:9200/index
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</pre>
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2.create a mapping
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<pre>
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curl -XPOST http://localhost:9200/index/fulltext/_mapping -d'
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{
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"fulltext": {
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"_all": {
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"indexAnalyzer": "ik",
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"searchAnalyzer": "ik",
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"term_vector": "no",
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"store": "false"
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},
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"properties": {
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"content": {
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"type": "string",
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"store": "no",
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"term_vector": "with_positions_offsets",
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"indexAnalyzer": "ik",
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"searchAnalyzer": "ik",
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"include_in_all": "true",
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"boost": 8
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}
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}
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}
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}'
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</pre>
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3.index some docs
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<pre>
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curl -XPOST http://localhost:9200/index/fulltext/1 -d'
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{"content":"美国留给伊拉克的是个烂摊子吗"}
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'
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curl -XPOST http://localhost:9200/index/fulltext/2 -d'
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{"content":"公安部：各地校车将享最高路权"}
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'
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curl -XPOST http://localhost:9200/index/fulltext/3 -d'
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{"content":"中韩渔警冲突调查：韩警平均每天扣1艘中国渔船"}
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'
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curl -XPOST http://localhost:9200/index/fulltext/4 -d'
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{"content":"中国驻洛杉矶领事馆遭亚裔男子枪击 嫌犯已自首"}
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'
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</pre>
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4.query with highlighting
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<pre>
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curl -XPOST http://localhost:9200/index/fulltext/_search -d'
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{
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"query" : { "term" : { "content" : "中国" }},
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"highlight" : {
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"pre_tags" : ["<tag1>", "<tag2>"],
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"post_tags" : ["</tag1>", "</tag2>"],
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"fields" : {
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"content" : {}
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}
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}
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}
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'
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</pre>
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here is the query result
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<pre>
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{
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"took": 14,
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"timed_out": false,
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"_shards": {
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"total": 5,
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"successful": 5,
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"failed": 0
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},
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"hits": {
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"total": 2,
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"max_score": 2,
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"hits": [
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{
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"_index": "index",
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"_type": "fulltext",
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"_id": "4",
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"_score": 2,
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"_source": {
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"content": "中国驻洛杉矶领事馆遭亚裔男子枪击 嫌犯已自首"
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},
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"highlight": {
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"content": [
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"<tag1>中国</tag1>驻洛杉矶领事馆遭亚裔男子枪击 嫌犯已自首 "
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]
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}
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},
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{
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"_index": "index",
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"_type": "fulltext",
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"_id": "3",
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"_score": 2,
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"_source": {
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"content": "中韩渔警冲突调查：韩警平均每天扣1艘中国渔船"
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},
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"highlight": {
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"content": [
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"均每天扣1艘<tag1>中国</tag1>渔船 "
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]
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}
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}
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]
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}
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}
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</pre>
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have fun.
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热更新IK分词使用方法
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----------
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目前该插件支持热更新 ik 分词，通过上文在 ik 配置文件中提到的如下配置
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<pre>
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<!--用户可以在这里配置远程扩展字典 -->
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<entry key="remote_ext_dict">location</entry>
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<!--用户可以在这里配置远程扩展停止词字典-->
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<entry key="remote_ext_stopwords">location</entry>
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</pre>
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其中 `location` 是指一个 url，比如 `http://yoursite.com/getCustomDict`，该请求只需满足一下两点即可完成分词热更新。
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1. 该 http 请求需要返回两个头部，一个是 `Last-Modified`，一个是 `ETags`，这两者都是字符串类型，只要有一个发生变化，该插件就会去抓取新的分词进而更新词库。
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2. 该 http 请求返回的内容格式是一行一个分词，换行符用 `\n` 即可。
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满足上面两点要求就可以实现热更新分词了，不需要重启 es 实例。
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常见问题：
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-------------
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1.自定义词典为什么没有生效？
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请确保你的扩展词典的文本格式为 UTF8 编码
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2.如何手动安装，以 1.3.0 為例？（参考：https://github.com/medcl/elasticsearch-analysis-ik/issues/46）
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`git clone https://github.com/medcl/elasticsearch-analysis-ik`
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`cd elasticsearch-analysis-ik`
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`mvn compile`
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`mvn package`
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`plugin --install analysis-ik --url file:///#{project_path}/elasticsearch-analysis-ik/target/releases/elasticsearch-analysis-ik-1.3.0.zip`
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IK Analysis for ElasticSearch
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=============================
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The IK Analysis plugin integrates Lucene IK analyzer into elasticsearch, support customized dictionary.
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Tokenizer: `ik`
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|
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更新：对于使用 ES 集群，用 IK 作为分词插件，经常会修改自定义词典的使用者，可以透过远程加载的方式，每次更新都会重新加载词典，不必重启 ES 服务。
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Versions
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--------
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IK version | ES version
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-----------|-----------
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master | 1.5.0 -> master
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1.4.0 | 1.6.0
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1.3.0 | 1.5.0
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1.2.9 | 1.4.0
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1.2.8 | 1.3.2
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1.2.7 | 1.2.1
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1.2.6 | 1.0.0
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1.2.5 | 0.90.2
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1.2.3 | 0.90.2
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||||
1.2.0 | 0.90.0
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1.1.3 | 0.20.2
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1.1.2 | 0.19.x
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1.0.0 | 0.16.2 -> 0.19.0
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Install
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-------
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you can download this plugin from RTF project(https://github.com/medcl/elasticsearch-rtf)
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https://github.com/medcl/elasticsearch-rtf/tree/master/plugins/analysis-ik
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https://github.com/medcl/elasticsearch-rtf/tree/master/config/ik
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<del>also remember to download the dict files,unzip these dict file into your elasticsearch's config folder,such as: your-es-root/config/ik</del>
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||||
|
||||
you need a service restart after that!
|
||||
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Configuration
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-------------
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### Analysis Configuration
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#### `elasticsearch.yml`
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```yaml
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index:
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analysis:
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analyzer:
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ik:
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alias: [ik_analyzer]
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type: org.elasticsearch.index.analysis.IkAnalyzerProvider
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ik_max_word:
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type: ik
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use_smart: false
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ik_smart:
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type: ik
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use_smart: true
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```
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Or
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```yaml
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index.analysis.analyzer.ik.type : "ik"
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```
|
||||
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||||
you can set your prefer segment mode,default `use_smart` is false.
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||||
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### Mapping Configuration
|
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#### Quick Example
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1. create a index
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|
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```bash
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curl -XPUT http://localhost:9200/index
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```
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2. create a mapping
|
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|
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```bash
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curl -XPOST http://localhost:9200/index/fulltext/_mapping -d'
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{
|
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"fulltext": {
|
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"_all": {
|
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"indexAnalyzer": "ik",
|
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"searchAnalyzer": "ik",
|
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"term_vector": "no",
|
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"store": "false"
|
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},
|
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"properties": {
|
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"content": {
|
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"type": "string",
|
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"store": "no",
|
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"term_vector": "with_positions_offsets",
|
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"indexAnalyzer": "ik",
|
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"searchAnalyzer": "ik",
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"include_in_all": "true",
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"boost": 8
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}
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}
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}
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}'
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```
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3. index some docs
|
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|
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```bash
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curl -XPOST http://localhost:9200/index/fulltext/1 -d'
|
||||
{"content":"美国留给伊拉克的是个烂摊子吗"}
|
||||
'
|
||||
```
|
||||
|
||||
```bash
|
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curl -XPOST http://localhost:9200/index/fulltext/2 -d'
|
||||
{"content":"公安部：各地校车将享最高路权"}
|
||||
'
|
||||
```
|
||||
|
||||
```bash
|
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curl -XPOST http://localhost:9200/index/fulltext/3 -d'
|
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{"content":"中韩渔警冲突调查：韩警平均每天扣1艘中国渔船"}
|
||||
'
|
||||
```
|
||||
|
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```bash
|
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curl -XPOST http://localhost:9200/index/fulltext/4 -d'
|
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{"content":"中国驻洛杉矶领事馆遭亚裔男子枪击 嫌犯已自首"}
|
||||
'
|
||||
```
|
||||
|
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4. query with highlighting
|
||||
|
||||
```bash
|
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curl -XPOST http://localhost:9200/index/fulltext/_search -d'
|
||||
{
|
||||
"query" : { "term" : { "content" : "中国" }},
|
||||
"highlight" : {
|
||||
"pre_tags" : ["<tag1>", "<tag2>"],
|
||||
"post_tags" : ["</tag1>", "</tag2>"],
|
||||
"fields" : {
|
||||
"content" : {}
|
||||
}
|
||||
}
|
||||
}
|
||||
'
|
||||
```
|
||||
|
||||
#### Result
|
||||
|
||||
```json
|
||||
{
|
||||
"took": 14,
|
||||
"timed_out": false,
|
||||
"_shards": {
|
||||
"total": 5,
|
||||
"successful": 5,
|
||||
"failed": 0
|
||||
},
|
||||
"hits": {
|
||||
"total": 2,
|
||||
"max_score": 2,
|
||||
"hits": [
|
||||
{
|
||||
"_index": "index",
|
||||
"_type": "fulltext",
|
||||
"_id": "4",
|
||||
"_score": 2,
|
||||
"_source": {
|
||||
"content": "中国驻洛杉矶领事馆遭亚裔男子枪击 嫌犯已自首"
|
||||
},
|
||||
"highlight": {
|
||||
"content": [
|
||||
"<tag1>中国</tag1>驻洛杉矶领事馆遭亚裔男子枪击 嫌犯已自首 "
|
||||
]
|
||||
}
|
||||
},
|
||||
{
|
||||
"_index": "index",
|
||||
"_type": "fulltext",
|
||||
"_id": "3",
|
||||
"_score": 2,
|
||||
"_source": {
|
||||
"content": "中韩渔警冲突调查：韩警平均每天扣1艘中国渔船"
|
||||
},
|
||||
"highlight": {
|
||||
"content": [
|
||||
"均每天扣1艘<tag1>中国</tag1>渔船 "
|
||||
]
|
||||
}
|
||||
}
|
||||
]
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### Dictionary Configuration
|
||||
|
||||
#### `config/ik/IKAnalyzer.cfg.xml`
|
||||
|
||||
```xml
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<!DOCTYPE properties SYSTEM "http://java.sun.com/dtd/properties.dtd">
|
||||
<properties>
|
||||
<comment>IK Analyzer 扩展配置</comment>
|
||||
<!--用户可以在这里配置自己的扩展字典 -->
|
||||
<entry key="ext_dict">custom/mydict.dic;custom/single_word_low_freq.dic</entry>
|
||||
<!--用户可以在这里配置自己的扩展停止词字典-->
|
||||
<entry key="ext_stopwords">custom/ext_stopword.dic</entry>
|
||||
<!--用户可以在这里配置远程扩展字典 -->
|
||||
<entry key="remote_ext_dict">location</entry>
|
||||
<!--用户可以在这里配置远程扩展停止词字典-->
|
||||
<entry key="remote_ext_stopwords">location</entry>
|
||||
</properties>
|
||||
```
|
||||
|
||||
### 热更新 IK 分词使用方法
|
||||
|
||||
目前该插件支持热更新 IK 分词，通过上文在 IK 配置文件中提到的如下配置
|
||||
|
||||
```xml
|
||||
<!--用户可以在这里配置远程扩展字典 -->
|
||||
<entry key="remote_ext_dict">location</entry>
|
||||
<!--用户可以在这里配置远程扩展停止词字典-->
|
||||
<entry key="remote_ext_stopwords">location</entry>
|
||||
```
|
||||
|
||||
其中 `location` 是指一个 url，比如 `http://yoursite.com/getCustomDict`，该请求只需满足以下两点即可完成分词热更新。
|
||||
|
||||
1. 该 http 请求需要返回两个头部(header)，一个是 `Last-Modified`，一个是 `ETags`，这两者都是字符串类型，只要有一个发生变化，该插件就会去抓取新的分词进而更新词库。
|
||||
|
||||
2. 该 http 请求返回的内容格式是一行一个分词，换行符用 `\n` 即可。
|
||||
|
||||
满足上面两点要求就可以实现热更新分词了，不需要重启 ES 实例。
|
||||
|
||||
have fun.
|
||||
|
||||
常见问题
|
||||
-------
|
||||
|
||||
1.自定义词典为什么没有生效？
|
||||
|
||||
请确保你的扩展词典的文本格式为 UTF8 编码
|
||||
|
||||
2.如何手动安装，以 1.3.0 為例？（参考：https://github.com/medcl/elasticsearch-analysis-ik/issues/46）
|
||||
|
||||
|
||||
```bash
|
||||
git clone https://github.com/medcl/elasticsearch-analysis-ik
|
||||
cd elasticsearch-analysis-ik
|
||||
mvn compile
|
||||
mvn package
|
||||
plugin --install analysis-ik --url file:///#{project_path}/elasticsearch-analysis-ik/target/releases/elasticsearch-analysis-ik-1.3.0.zip
|
||||
```
|
||||
|
||||
Thanks
|
||||
------
|
||||
YourKit supports IK Analysis for ElasticSearch project with its full-featured Java Profiler.
|
||||
YourKit, LLC is the creator of innovative and intelligent tools for profiling
|
||||
Java and .NET applications. Take a look at YourKit's leading software products:
|
||||
<a href="http://www.yourkit.com/java/profiler/index.jsp">YourKit Java Profiler</a> and
|
||||
<a href="http://www.yourkit.com/.net/profiler/index.jsp">YourKit .NET Profiler</a>.
|
||||
|
||||
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Reference in New Issue
Block a user