# Synonym filter behavior for single word / multi words **URL:** \ **Category:** Elasticsearch\ **Created:** [June 2, 2014, 1:34pm UTC](https://discuss.elastic.co/t/synonym-filter-behavior-for-single-word-multi-words/17858 "2014-06-02T13:34:30Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Bernhardt\_Scherer](https://avatars.discourse-cdn.com/v4/letter/b/a87d85/32.png) [@Bernhardt\_Scherer](https://discuss.elastic.co/u/Bernhardt_Scherer)\ **Post date:** [June 2, 2014, 1:34pm UTC](https://discuss.elastic.co/t/synonym-filter-behavior-for-single-word-multi-words/17858/1 "2014-06-02T13:34:30Z")
Hello there, I am currently trying out the synonym filter. Here are my settings: "settings": { "analysis": { "filter": { "nGram\_filter": { "type": "nGram", "min\_gram": 2, "max\_gram": 15 }, "synonym": { "type": "synonym", "synonyms\_path" : "analysis/synonym.txt", "ignore\_case": true, "expand": true } }, "analyzer": { "synonym\_analyzer": { "type":"custom", "tokenizer": "whitespace", "filter": [ "synonym", "lowercase", "asciifolding" ] } } } } In the synonym.txt file I have the following line: Inbus, Innensechskant, Imbus When I test the analyzer, I get the following results (output is reformatted for ease of reading). It seems the synonym analyzer only does its job when the "synonym" word is surrounded by other words localhost:9200/index\_v1/\_analyze?analyzer=synonym\_analyzer --input: 'Inbus' --output: inbus localhost:9200/index\_v1/\_analyze?analyzer=synonym\_analyzer --input: 'Der Inbus' --output: 'der inbus' localhost:9200/index\_v1/\_analyze?analyzer=synonym\_analyzer --input: 'Der Inbus ist' --output: 'der inbus innensechskant imbus ist' Could anyone please explain why it behaves like this and how to implement this correctly? Big thanks in advance! -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/c843106e-be78-4d4c-9101-2c73720b4062%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/c843106e-be78-4d4c-9101-2c73720b4062%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![ElasticSearch\_Users\_](https://avatars.discourse-cdn.com/v4/letter/e/b4bc9f/32.png) [@ElasticSearch\_Users\_](https://discuss.elastic.co/u/ElasticSearch_Users_)\ **Post date:** [June 2, 2014, 7:59pm UTC](https://discuss.elastic.co/t/synonym-filter-behavior-for-single-word-multi-words/17858/2 "2014-06-02T19:59:43Z")
It seems to work fine for me (ES 1.2). Can you please post an full reproducible sequence of commands that I can execute to try? -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/bc463d08-873f-4a25-983a-7a1c89c42cbc%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/bc463d08-873f-4a25-983a-7a1c89c42cbc%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![ElasticSearch\_Users\_](https://avatars.discourse-cdn.com/v4/letter/e/b4bc9f/32.png) [@ElasticSearch\_Users\_](https://discuss.elastic.co/u/ElasticSearch_Users_)\ **Post date:** [June 2, 2014, 8:01pm UTC](https://discuss.elastic.co/t/synonym-filter-behavior-for-single-word-multi-words/17858/3 "2014-06-02T20:01:13Z")
What I mean by working: Input: Inbus Output: { "tokens" : [ { "token" : "inbus", "start\_offset" : 0, "end\_offset" : 5, "type" : "SYNONYM", "position" : 1 }, { "token" : "innensechskant", "start\_offset" : 0, "end\_offset" : 5, "type" : "SYNONYM", "position" : 1 }, { "token" : "imbus", "start\_offset" : 0, "end\_offset" : 5, "type" : "SYNONYM", "position" : 1 } ] } Input: Der Inbus Output: { "tokens" : [ { "token" : "der", "start\_offset" : 0, "end\_offset" : 3, "type" : "word", "position" : 1 }, { "token" : "inbus", "start\_offset" : 4, "end\_offset" : 9, "type" : "SYNONYM", "position" : 2 }, { "token" : "innensechskant", "start\_offset" : 4, "end\_offset" : 9, "type" : "SYNONYM", "position" : 2 }, { "token" : "imbus", "start\_offset" : 4, "end\_offset" : 9, "type" : "SYNONYM", "position" : 2 } ] } Input: Der Inbus ist Output: { "tokens" : [ { "token" : "der", "start\_offset" : 0, "end\_offset" : 3, "type" : "word", "position" : 1 }, { "token" : "inbus", "start\_offset" : 4, "end\_offset" : 9, "type" : "SYNONYM", "position" : 2 }, { "token" : "innensechskant", "start\_offset" : 4, "end\_offset" : 9, "type" : "SYNONYM", "position" : 2 }, { "token" : "imbus", "start\_offset" : 4, "end\_offset" : 9, "type" : "SYNONYM", "position" : 2 }, { "token" : "ist", "start\_offset" : 10, "end\_offset" : 13, "type" : "word", "position" : 3 } ] } -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/d49aaaab-98d5-4d7a-aa16-63a77d0d0fab%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/d49aaaab-98d5-4d7a-aa16-63a77d0d0fab%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![Bernhardt\_Scherer](https://avatars.discourse-cdn.com/v4/letter/b/a87d85/32.png) [@Bernhardt\_Scherer](https://discuss.elastic.co/u/Bernhardt_Scherer)\ **Post date:** [June 3, 2014, 12:19pm UTC](https://discuss.elastic.co/t/synonym-filter-behavior-for-single-word-multi-words/17858/4 "2014-06-03T12:19:14Z")
Hey Binh, thanks for your reply! I tried the following: 1. POST localhost:9200/index\_v2/ { "settings": { "analysis": { "filter": { "synonym": { "type": "synonym", "synonyms": [ "Schraubenzieher, Schraubendreher", "Inbus, Innensechskant, Imbus, Innen-6-Kant", "Innensechskantschlüssel, Inbusschlüssel", "Bauhelm, Schutzhelm" ], "ignore\_case": true, "expand": true } }, "analyzer": { "synonym\_analyzer": { "type":"custom", "tokenizer": "whitespace", "filter": [ "synonym", "lowercase", "asciifolding" ] } } } } } 1. POST localhost:9200/index\_v2/\_analyze?analyzer=synonym\_analyzer 'Inbus' Output: { "tokens": [ { "token": "'inbus'", "start\_offset": 0, "end\_offset": 7, "type": "word", "position": 1 } ] } 1. POST localhost:9200/index\_v2/\_analyze?analyzer=synonym\_analyzer 'Inbus' Output: { "tokens": [ { "token": "'der", "start\_offset": 0, "end\_offset": 4, "type": "word", "position": 1 }, { "token": "inbus", "start\_offset": 5, "end\_offset": 10, "type": "SYNONYM", "position": 2 }, { "token": "innensechskant", "start\_offset": 5, "end\_offset": 10, "type": "SYNONYM", "position": 2 }, { "token": "imbus", "start\_offset": 5, "end\_offset": 10, "type": "SYNONYM", "position": 2 }, { "token": "innen-6-kant", "start\_offset": 5, "end\_offset": 10, "type": "SYNONYM", "position": 2 }, { "token": "ist'", "start\_offset": 11, "end\_offset": 15, "type": "word", "position": 3 } ] } I have changed to 1.0.1 but the behavior was the same on 1.2.. -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/f57e83e1-8af1-4102-8083-b23532932ac1%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/f57e83e1-8af1-4102-8083-b23532932ac1%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![Bernhardt\_Scherer](https://avatars.discourse-cdn.com/v4/letter/b/a87d85/32.png) [@Bernhardt\_Scherer](https://discuss.elastic.co/u/Bernhardt_Scherer)\ **Post date:** [June 3, 2014, 12:20pm UTC](https://discuss.elastic.co/t/synonym-filter-behavior-for-single-word-multi-words/17858/5 "2014-06-03T12:20:23Z")
> Hey Binh, > > thanks for your reply! > > I tried the following: > > 1. > > POST localhost:9200/index\_v2/ > > { > "settings": { > "analysis": { > "filter": { > "synonym": { > "type": "synonym", > "synonyms": [ > "Schraubenzieher, Schraubendreher", > "Inbus, Innensechskant, Imbus, Innen-6-Kant", > "Innensechskantschlüssel, Inbusschlüssel", > "Bauhelm, Schutzhelm" > ], > "ignore\_case": true, > "expand": true > } > }, > "analyzer": { > "synonym\_analyzer": { > "type":"custom", > "tokenizer": "whitespace", > "filter": [ > "synonym", > "lowercase", > "asciifolding" > ] > } > } > } > } > } > > 1. > > POST localhost:9200/index\_v2/\_analyze?analyzer=synonym\_analyzer > 'Inbus' > > Output: > { > "tokens": [ > { > "token": "'inbus'", > "start\_offset": 0, > "end\_offset": 7, > "type": "word", > "position": 1 > } > ] > } > > 1. > > POST localhost:9200/index\_v2/\_analyze?analyzer=synonym\_analyzer > 'Der Inbus ist' > > Output: > { > "tokens": [ > { > "token": "'der", > "start\_offset": 0, > "end\_offset": 4, > "type": "word", > "position": 1 > }, > { > "token": "inbus", > "start\_offset": 5, > "end\_offset": 10, > "type": "SYNONYM", > "position": 2 > }, > { > "token": "innensechskant", > "start\_offset": 5, > "end\_offset": 10, > "type": "SYNONYM", > "position": 2 > }, > { > "token": "imbus", > "start\_offset": 5, > "end\_offset": 10, > "type": "SYNONYM", > "position": 2 > }, > { > "token": "innen-6-kant", > "start\_offset": 5, > "end\_offset": 10, > "type": "SYNONYM", > "position": 2 > }, > { > "token": "ist'", > "start\_offset": 11, > "end\_offset": 15, > "type": "word", > "position": 3 > } > ] > } > > I have changed to 1.0.1 but the behavior was the same on 1.2.. -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/18c6aa41-12b7-4301-8661-53162454f158%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/18c6aa41-12b7-4301-8661-53162454f158%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 1:25am UTC](https://discuss.elastic.co/t/synonym-filter-behavior-for-single-word-multi-words/17858/6 "2017-07-06T01:25:00Z")