# Stemmer Token Filter（Stemmer 詞元過濾器） 原文鏈接 : [https://www.elastic.co/guide/en/elasticsearch/reference/current/analysis-stemmer-tokenfilter.html](https://www.elastic.co/guide/en/elasticsearch/reference/current/analysis-stemmer-tokenfilter.html) 譯文鏈接 : [http://www.apache.wiki/pages/viewpage.action?pageId=10028526](http://www.apache.wiki/pages/viewpage.action?pageId=10028526) 貢獻者 : [fucker](/display/~caizhongjie)，[ApacheCN](/display/~apachecn)，[Apache中文網](/display/~apachechina) ``` ?一個過濾器，通過單個統一接口提供（幾乎）所有可用的詞干詞元過濾器的訪問，例如： ``` ``` { "index" : { "analysis" : { "analyzer" : { "my_analyzer" : { "tokenizer" : "standard", "filter" : ["standard", "lowercase", "my_stemmer"] } }, "filter" : { "my_stemmer" : { "type" : "stemmer", "name" : "light_german" } } } } } ``` **language / name** 參數用以下可用值控制詞干（首選過濾器以粗體標記）： | Arabic | **[`arabic`](http://lucene.apache.org/core/4_9_0/analyzers-common/org/apache/lucene/analysis/ar/ArabicStemmer.html)** | | Armenian | **[`armenian`](http://snowball.tartarus.org/algorithms/armenian/stemmer.html)** | | Basque | **[`basque`](http://snowball.tartarus.org/algorithms/basque/stemmer.html)** | | Brazilian Portuguese | **[`brazilian`](http://lucene.apache.org/core/4_9_0/analyzers-common/org/apache/lucene/analysis/br/BrazilianStemmer.html)** | | Bulgarian | **[`bulgarian`](http://members.unine.ch/jacques.savoy/Papers/BUIR.pdf)** | | Catalan | **[`catalan`](http://snowball.tartarus.org/algorithms/catalan/stemmer.html)** | | Czech | **[`czech`](http://portal.acm.org/citation.cfm?id=1598600)** | | Danish | **[`danish`](http://snowball.tartarus.org/algorithms/danish/stemmer.html)** | | Dutch | **[`dutch`](http://snowball.tartarus.org/algorithms/dutch/stemmer.html)**,?[`dutch_kp`](http://snowball.tartarus.org/algorithms/kraaij_pohlmann/stemmer.html) | | English | **[`english`](http://snowball.tartarus.org/algorithms/porter/stemmer.html)**,?[`light_english`](http://ciir.cs.umass.edu/pubfiles/ir-35.pdf),?[`minimal_english`](http://www.researchgate.net/publication/220433848_How_effective_is_suffixing),?[`possessive_english`](http://lucene.apache.org/core/4_9_0/analyzers-common/org/apache/lucene/analysis/en/EnglishPossessiveFilter.html),?[`porter2`](http://snowball.tartarus.org/algorithms/english/stemmer.html),[`lovins`](http://snowball.tartarus.org/algorithms/lovins/stemmer.html) | | Finnish | **[`finnish`](http://snowball.tartarus.org/algorithms/finnish/stemmer.html)**,?[`light_finnish`](http://clef.isti.cnr.it/2003/WN_web/22.pdf) | | French | [`french`](http://snowball.tartarus.org/algorithms/french/stemmer.html),?**[`light_french`](http://dl.acm.org/citation.cfm?id=1141523)**,?[`minimal_french`](http://dl.acm.org/citation.cfm?id=318984) | | Galician | **[`galician`](http://bvg.udc.es/recursos_lingua/stemming.jsp)**,?[`minimal_galician`](http://bvg.udc.es/recursos_lingua/stemming.jsp)?(Plural step only) | | German | [`german`](http://snowball.tartarus.org/algorithms/german/stemmer.html),?[`german2`](http://snowball.tartarus.org/algorithms/german2/stemmer.html),?**[`light_german`](http://dl.acm.org/citation.cfm?id=1141523)**,?[`minimal_german`](http://members.unine.ch/jacques.savoy/clef/morpho.pdf) | | Greek | **[`greek`](http://sais.se/mthprize/2007/ntais2007.pdf)** | | Hindi | **[`hindi`](http://computing.open.ac.uk/Sites/EACLSouthAsia/Papers/p6-Ramanathan.pdf)** | | Hungarian | **[`hungarian`](http://snowball.tartarus.org/algorithms/hungarian/stemmer.html)**,?[`light_hungarian`](http://dl.acm.org/citation.cfm?id=1141523&dl=ACM&coll=DL&CFID=179095584&CFTOKEN=80067181) | | Indonesian | **[`indonesian`](http://www.illc.uva.nl/Publications/ResearchReports/MoL-2003-02.text.pdf)** | | Irish | **[`irish`](http://snowball.tartarus.org/otherapps/oregan/intro.html)** | | Italian | [`italian`](http://snowball.tartarus.org/algorithms/italian/stemmer.html),?**[`light_italian`](http://www.ercim.eu/publication/ws-proceedings/CLEF2/savoy.pdf)** | | Kurdish (Sorani) | **[`sorani`](http://lucene.apache.org/core/4_9_0/analyzers-common/org/apache/lucene/analysis/ckb/SoraniStemmer.html)** | | Latvian | **[`latvian`](http://lucene.apache.org/core/4_9_0/analyzers-common/org/apache/lucene/analysis/lv/LatvianStemmer.html)** | | Lithuanian | **[`lithuanian`](http://svn.apache.org/viewvc/lucene/dev/branches/lucene_solr_5_3/lucene/analysis/common/src/java/org/apache/lucene/analysis/lt/stem_ISO_8859_1.sbl?view=markup)** | | Norwegian (Bokm?l) | **[`norwegian`](http://snowball.tartarus.org/algorithms/norwegian/stemmer.html)**,?**[`light_norwegian`](http://lucene.apache.org/core/4_9_0/analyzers-common/org/apache/lucene/analysis/no/NorwegianLightStemmer.html)**,?[`minimal_norwegian`](http://lucene.apache.org/core/4_9_0/analyzers-common/org/apache/lucene/analysis/no/NorwegianMinimalStemmer.html) | | Norwegian (Nynorsk) | **[`light_nynorsk`](http://lucene.apache.org/core/4_9_0/analyzers-common/org/apache/lucene/analysis/no/NorwegianLightStemmer.html)**,?[`minimal_nynorsk`](http://lucene.apache.org/core/4_9_0/analyzers-common/org/apache/lucene/analysis/no/NorwegianMinimalStemmer.html) | | Portuguese | [`portuguese`](http://snowball.tartarus.org/algorithms/portuguese/stemmer.html),?**[`light_portuguese`](http://dl.acm.org/citation.cfm?id=1141523&dl=ACM&coll=DL&CFID=179095584&CFTOKEN=80067181)**,?[`minimal_portuguese`](http://www.inf.ufrgs.br/~buriol/papers/Orengo_CLEF07.pdf),?[`portuguese_rslp`](http://www.inf.ufrgs.br//~viviane/rslp/index.htm) | | Romanian | **[`romanian`](http://snowball.tartarus.org/algorithms/romanian/stemmer.html)** | | Russian | **[`russian`](http://snowball.tartarus.org/algorithms/russian/stemmer.html)**,?[`light_russian`](http://doc.rero.ch/lm.php?url=1000%2C43%2C4%2C20091209094227-CA%2FDolamic_Ljiljana_-_Indexing_and_Searching_Strategies_for_the_Russian_20091209.pdf) | | Spanish | [`spanish`](http://snowball.tartarus.org/algorithms/spanish/stemmer.html),?**[`light_spanish`](http://www.ercim.eu/publication/ws-proceedings/CLEF2/savoy.pdf)** | | Swedish | **[`swedish`](http://snowball.tartarus.org/algorithms/swedish/stemmer.html)**,?[`light_swedish`](http://clef.isti.cnr.it/2003/WN_web/22.pdf) | | Turkish | **[`turkish`](http://snowball.tartarus.org/algorithms/turkish/stemmer.html)** |