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IK Analysis for Elasticsearch

The IK Analysis plugin integrates Lucene IK analyzer (http://code.google.com/p/ik-analyzer/) into elasticsearch, support customized dictionary.

Analyzer: ik_smart , ik_max_word , Tokenizer: ik_smart , ik_max_word

Versions IK version ES version master 7.x -> master 6.x 6.x 5.x 5.x 1.10.6 2.4.6 1.9.5 2.3.5 1.8.1 2.2.1 1.7.0 2.1.1 1.5.0 2.0.0 1.2.6 1.0.0 1.2.5 0.90.x 1.1.3 0.20.x 1.0.0 0.16.2 -> 0.19.0 Install

1.download or compile

optional 1 - download pre-build package from here: https://github.com/medcl/elasticsearch-analysis-ik/releases

create plugin folder cd your-es-root/plugins/ && mkdir ik

unzip plugin to folder your-es-root/plugins/ik

optional 2 - use elasticsearch-plugin to install ( supported from version v5.5.1 ):

./bin/elasticsearch-plugin install https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v6.3.0/elasticsearch-analysis-ik-6.3.0.zip

NOTE: replace 6.3.0 to your own elasticsearch version

2.restart elasticsearch

Quick Example

1.create a index

curl -XPUT http://localhost:9200/index

2.create a mapping

curl -XPOST http://localhost:9200/index/_mapping -H 'Content-Type:application/json' -d' { "properties": { "content": { "type": "text", "analyzer": "ik_max_word", "search_analyzer": "ik_smart" } } }'

3.index some docs

curl -XPOST http://localhost:9200/index/_create/1 -H 'Content-Type:application/json' -d' {"content":"美国留给伊拉克的是个烂摊子吗"} ' curl -XPOST http://localhost:9200/index/_create/2 -H 'Content-Type:application/json' -d' {"content":"公安部：各地校车将享最高路权"} ' curl -XPOST http://localhost:9200/index/_create/3 -H 'Content-Type:application/json' -d' {"content":"中韩渔警冲突调查：韩警平均每天扣1艘中国渔船"} ' curl -XPOST http://localhost:9200/index/_create/4 -H 'Content-Type:application/json' -d' {"content":"中国驻洛杉矶领事馆遭亚裔男子枪击嫌犯已自首"} '

4.query with highlighting

curl -XPOST http://localhost:9200/index/_search -H 'Content-Type:application/json' -d' { "query" : { "match" : { "content" : "中国" }}, "highlight" : { "pre_tags" : ["", ""], "post_tags" : ["", ""], "fields" : { "content" : {} } } } '

Result

{ "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": [ "中国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艘中国渔船 " ] } } ] } } Dictionary Configuration

IKAnalyzer.cfg.xml can be located at {conf}/analysis-ik/config/IKAnalyzer.cfg.xml or {plugins}/elasticsearch-analysis-ik-*/config/IKAnalyzer.cfg.xml

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