1527 lines
38 KiB
Plaintext
1527 lines
38 KiB
Plaintext
[[analysis-lang-analyzer]]
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=== Language Analyzers
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A set of analyzers aimed at analyzing specific language text. The
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following types are supported:
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<<arabic-analyzer,`arabic`>>,
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<<armenian-analyzer,`armenian`>>,
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<<basque-analyzer,`basque`>>,
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<<brazilian-analyzer,`brazilian`>>,
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<<bulgarian-analyzer,`bulgarian`>>,
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<<catalan-analyzer,`catalan`>>,
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<<chinese-analyzer,`chinese`>>,
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<<cjk-analyzer,`cjk`>>,
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<<czech-analyzer,`czech`>>,
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<<danish-analyzer,`danish`>>,
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<<dutch-analyzer,`dutch`>>,
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<<english-analyzer,`english`>>,
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<<finnish-analyzer,`finnish`>>,
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<<french-analyzer,`french`>>,
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<<galician-analyzer,`galician`>>,
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<<german-analyzer,`german`>>,
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<<greek-analyzer,`greek`>>,
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<<hindi-analyzer,`hindi`>>,
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<<hungarian-analyzer,`hungarian`>>,
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<<indonesian-analyzer,`indonesian`>>,
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<<irish-analyzer,`irish`>>,
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<<italian-analyzer,`italian`>>,
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<<latvian-analyzer,`latvian`>>,
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<<norwegian-analyzer,`norwegian`>>,
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<<persian-analyzer,`persian`>>,
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<<portuguese-analyzer,`portuguese`>>,
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<<romanian-analyzer,`romanian`>>,
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<<russian-analyzer,`russian`>>,
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<<sorani-analyzer,`sorani`>>,
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<<spanish-analyzer,`spanish`>>,
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<<swedish-analyzer,`swedish`>>,
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<<turkish-analyzer,`turkish`>>,
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<<thai-analyzer,`thai`>>.
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==== Configuring language analyzers
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===== Stopwords
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All analyzers support setting custom `stopwords` either internally in
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the config, or by using an external stopwords file by setting
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`stopwords_path`. Check <<analysis-stop-analyzer,Stop Analyzer>> for
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more details.
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===== Excluding words from stemming
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The `stem_exclusion` parameter allows you to specify an array
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of lowercase words that should not be stemmed. Internally, this
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functionality is implemented by adding the
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<<analysis-keyword-marker-tokenfilter,`keyword_marker` token filter>>
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with the `keywords` set to the value of the `stem_exclusion` parameter.
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The following analyzers support setting custom `stem_exclusion` list:
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`arabic`, `armenian`, `basque`, `catalan`, `bulgarian`, `catalan`,
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`czech`, `finnish`, `dutch`, `english`, `finnish`, `french`, `galician`,
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`german`, `irish`, `hindi`, `hungarian`, `indonesian`, `italian`, `latvian`, `norwegian`,
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`portuguese`, `romanian`, `russian`, `sorani`, `spanish`, `swedish`, `turkish`.
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==== Reimplementing language analyzers
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The built-in language analyzers can be reimplemented as `custom` analyzers
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(as described below) in order to customize their behaviour.
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NOTE: If you do not intend to exclude words from being stemmed (the
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equivalent of the `stem_exclusion` parameter above), then you should remove
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the `keyword_marker` token filter from the custom analyzer configuration.
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[[arabic-analyzer]]
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===== `arabic` analyzer
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The `arabic` analyzer could be reimplemented as a `custom` analyzer as follows:
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[source,js]
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----------------------------------------------------
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{
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"settings": {
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"analysis": {
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"filter": {
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"arabic_stop": {
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"type": "stop",
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"stopwords": "_arabic_" <1>
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},
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"arabic_keywords": {
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"type": "keyword_marker",
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"keywords": [] <2>
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},
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"arabic_stemmer": {
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"type": "stemmer",
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"language": "arabic"
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}
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},
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"analyzer": {
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"arabic": {
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"tokenizer": "standard",
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"filter": [
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"lowercase",
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"arabic_stop",
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"arabic_normalization",
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"arabic_keywords",
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"arabic_stemmer"
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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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----------------------------------------------------
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<1> The default stopwords can be overridden with the `stopwords`
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or `stopwords_path` parameters.
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<2> This filter should be removed unless there are words which should
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be excluded from stemming.
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[[armenian-analyzer]]
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===== `armenian` analyzer
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The `armenian` analyzer could be reimplemented as a `custom` analyzer as follows:
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[source,js]
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----------------------------------------------------
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{
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"settings": {
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"analysis": {
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"filter": {
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"armenian_stop": {
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"type": "stop",
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"stopwords": "_armenian_" <1>
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},
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"armenian_keywords": {
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"type": "keyword_marker",
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"keywords": [] <2>
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},
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"armenian_stemmer": {
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"type": "stemmer",
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"language": "armenian"
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}
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},
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"analyzer": {
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"armenian": {
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"tokenizer": "standard",
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"filter": [
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"lowercase",
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"armenian_stop",
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"armenian_keywords",
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"armenian_stemmer"
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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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----------------------------------------------------
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<1> The default stopwords can be overridden with the `stopwords`
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or `stopwords_path` parameters.
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<2> This filter should be removed unless there are words which should
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be excluded from stemming.
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[[basque-analyzer]]
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===== `basque` analyzer
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The `basque` analyzer could be reimplemented as a `custom` analyzer as follows:
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[source,js]
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----------------------------------------------------
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{
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"settings": {
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"analysis": {
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"filter": {
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"basque_stop": {
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"type": "stop",
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"stopwords": "_basque_" <1>
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},
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"basque_keywords": {
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"type": "keyword_marker",
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"keywords": [] <2>
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},
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"basque_stemmer": {
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"type": "stemmer",
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"language": "basque"
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}
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},
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"analyzer": {
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"basque": {
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"tokenizer": "standard",
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"filter": [
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"lowercase",
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"basque_stop",
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"basque_keywords",
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"basque_stemmer"
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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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----------------------------------------------------
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<1> The default stopwords can be overridden with the `stopwords`
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or `stopwords_path` parameters.
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<2> This filter should be removed unless there are words which should
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be excluded from stemming.
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[[brazilian-analyzer]]
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===== `brazilian` analyzer
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The `brazilian` analyzer could be reimplemented as a `custom` analyzer as follows:
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[source,js]
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----------------------------------------------------
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{
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"settings": {
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"analysis": {
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"filter": {
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"brazilian_stop": {
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"type": "stop",
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"stopwords": "_brazilian_" <1>
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},
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"brazilian_keywords": {
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"type": "keyword_marker",
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"keywords": [] <2>
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},
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"brazilian_stemmer": {
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"type": "stemmer",
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"language": "brazilian"
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}
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},
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"analyzer": {
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"brazilian": {
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"tokenizer": "standard",
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"filter": [
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"lowercase",
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"brazilian_stop",
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"brazilian_keywords",
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"brazilian_stemmer"
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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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----------------------------------------------------
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<1> The default stopwords can be overridden with the `stopwords`
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or `stopwords_path` parameters.
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<2> This filter should be removed unless there are words which should
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be excluded from stemming.
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[[bulgarian-analyzer]]
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===== `bulgarian` analyzer
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The `bulgarian` analyzer could be reimplemented as a `custom` analyzer as follows:
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[source,js]
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----------------------------------------------------
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{
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"settings": {
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"analysis": {
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"filter": {
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"bulgarian_stop": {
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"type": "stop",
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"stopwords": "_bulgarian_" <1>
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},
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"bulgarian_keywords": {
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"type": "keyword_marker",
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"keywords": [] <2>
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},
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"bulgarian_stemmer": {
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"type": "stemmer",
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"language": "bulgarian"
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}
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},
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"analyzer": {
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"bulgarian": {
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"tokenizer": "standard",
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"filter": [
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"lowercase",
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"bulgarian_stop",
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"bulgarian_keywords",
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"bulgarian_stemmer"
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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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----------------------------------------------------
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<1> The default stopwords can be overridden with the `stopwords`
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or `stopwords_path` parameters.
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<2> This filter should be removed unless there are words which should
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be excluded from stemming.
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[[catalan-analyzer]]
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===== `catalan` analyzer
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The `catalan` analyzer could be reimplemented as a `custom` analyzer as follows:
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[source,js]
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----------------------------------------------------
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{
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"settings": {
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"analysis": {
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"filter": {
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"catalan_elision": {
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"type": "elision",
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"articles": [ "d", "l", "m", "n", "s", "t"]
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},
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"catalan_stop": {
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"type": "stop",
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"stopwords": "_catalan_" <1>
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},
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"catalan_keywords": {
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"type": "keyword_marker",
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"keywords": [] <2>
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},
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"catalan_stemmer": {
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"type": "stemmer",
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"language": "catalan"
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}
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},
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"analyzer": {
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"catalan": {
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"tokenizer": "standard",
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"filter": [
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"catalan_elision",
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"lowercase",
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"catalan_stop",
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"catalan_keywords",
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"catalan_stemmer"
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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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----------------------------------------------------
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<1> The default stopwords can be overridden with the `stopwords`
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or `stopwords_path` parameters.
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<2> This filter should be removed unless there are words which should
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be excluded from stemming.
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[[chinese-analyzer]]
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===== `chinese` analyzer
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The `chinese` analyzer cannot be reimplemented as a `custom` analyzer
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because it depends on the ChineseTokenizer and ChineseFilter classes,
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which are not exposed in Elasticsearch. These classes are
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deprecated in Lucene 4 and the `chinese` analyzer will be replaced
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with the <<analysis-standard-analyzer>> in Lucene 5.
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[[cjk-analyzer]]
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===== `cjk` analyzer
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The `cjk` analyzer could be reimplemented as a `custom` analyzer as follows:
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[source,js]
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----------------------------------------------------
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{
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"settings": {
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"analysis": {
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"filter": {
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"english_stop": {
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"type": "stop",
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"stopwords": "_english_" <1>
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}
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},
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"analyzer": {
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"cjk": {
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"tokenizer": "standard",
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"filter": [
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"cjk_width",
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"lowercase",
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"cjk_bigram",
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"english_stop"
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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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----------------------------------------------------
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<1> The default stopwords can be overridden with the `stopwords`
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or `stopwords_path` parameters.
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[[czech-analyzer]]
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===== `czech` analyzer
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The `czech` analyzer could be reimplemented as a `custom` analyzer as follows:
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[source,js]
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----------------------------------------------------
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{
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"settings": {
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"analysis": {
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"filter": {
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"czech_stop": {
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"type": "stop",
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"stopwords": "_czech_" <1>
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},
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"czech_keywords": {
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"type": "keyword_marker",
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"keywords": [] <2>
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},
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"czech_stemmer": {
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"type": "stemmer",
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"language": "czech"
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}
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},
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"analyzer": {
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"czech": {
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"tokenizer": "standard",
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"filter": [
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"lowercase",
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"czech_stop",
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"czech_keywords",
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"czech_stemmer"
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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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----------------------------------------------------
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<1> The default stopwords can be overridden with the `stopwords`
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or `stopwords_path` parameters.
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<2> This filter should be removed unless there are words which should
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be excluded from stemming.
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|
[[danish-analyzer]]
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===== `danish` analyzer
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The `danish` analyzer could be reimplemented as a `custom` analyzer as follows:
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[source,js]
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----------------------------------------------------
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{
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"settings": {
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"analysis": {
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"filter": {
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"danish_stop": {
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"type": "stop",
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"stopwords": "_danish_" <1>
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},
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"danish_keywords": {
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"type": "keyword_marker",
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"keywords": [] <2>
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},
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"danish_stemmer": {
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"type": "stemmer",
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"language": "danish"
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}
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},
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"analyzer": {
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"danish": {
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"tokenizer": "standard",
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"filter": [
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"lowercase",
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"danish_stop",
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"danish_keywords",
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"danish_stemmer"
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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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----------------------------------------------------
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<1> The default stopwords can be overridden with the `stopwords`
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or `stopwords_path` parameters.
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<2> This filter should be removed unless there are words which should
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be excluded from stemming.
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|
[[dutch-analyzer]]
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===== `dutch` analyzer
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The `dutch` analyzer could be reimplemented as a `custom` analyzer as follows:
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[source,js]
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----------------------------------------------------
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{
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"settings": {
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"analysis": {
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"filter": {
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"dutch_stop": {
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"type": "stop",
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"stopwords": "_dutch_" <1>
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},
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"dutch_keywords": {
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"type": "keyword_marker",
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"keywords": [] <2>
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},
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"dutch_stemmer": {
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"type": "stemmer",
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"language": "dutch"
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},
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"dutch_override": {
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"type": "stemmer_override",
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"rules": [
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"fiets=>fiets",
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"bromfiets=>bromfiets",
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"ei=>eier",
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"kind=>kinder"
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]
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}
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},
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"analyzer": {
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"dutch": {
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"tokenizer": "standard",
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"filter": [
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"lowercase",
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"dutch_stop",
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"dutch_keywords",
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"dutch_override",
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"dutch_stemmer"
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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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----------------------------------------------------
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|
<1> The default stopwords can be overridden with the `stopwords`
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or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
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|
be excluded from stemming.
|
|
|
|
[[english-analyzer]]
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|
===== `english` analyzer
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|
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|
The `english` analyzer could be reimplemented as a `custom` analyzer as follows:
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|
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|
[source,js]
|
|
----------------------------------------------------
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|
{
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"settings": {
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"analysis": {
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"filter": {
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|
"english_stop": {
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"type": "stop",
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"stopwords": "_english_" <1>
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},
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"english_keywords": {
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"type": "keyword_marker",
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"keywords": [] <2>
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},
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"english_stemmer": {
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"type": "stemmer",
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"language": "english"
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},
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"english_possessive_stemmer": {
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"type": "stemmer",
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"language": "possessive_english"
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}
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},
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"analyzer": {
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"english": {
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"tokenizer": "standard",
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"filter": [
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"english_possessive_stemmer",
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"lowercase",
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"english_stop",
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"english_keywords",
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"english_stemmer"
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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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|
----------------------------------------------------
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|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
[[finnish-analyzer]]
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|
===== `finnish` analyzer
|
|
|
|
The `finnish` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
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"settings": {
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|
"analysis": {
|
|
"filter": {
|
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"finnish_stop": {
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|
"type": "stop",
|
|
"stopwords": "_finnish_" <1>
|
|
},
|
|
"finnish_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"finnish_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "finnish"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"finnish": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"lowercase",
|
|
"finnish_stop",
|
|
"finnish_keywords",
|
|
"finnish_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
[[french-analyzer]]
|
|
===== `french` analyzer
|
|
|
|
The `french` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"french_elision": {
|
|
"type": "elision",
|
|
"articles": [ "l", "m", "t", "qu", "n", "s",
|
|
"j", "d", "c", "jusqu", "quoiqu",
|
|
"lorsqu", "puisqu"
|
|
]
|
|
},
|
|
"french_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_french_" <1>
|
|
},
|
|
"french_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"french_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "light_french"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"french": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"french_elision",
|
|
"lowercase",
|
|
"french_stop",
|
|
"french_keywords",
|
|
"french_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
[[galician-analyzer]]
|
|
===== `galician` analyzer
|
|
|
|
The `galician` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"galician_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_galician_" <1>
|
|
},
|
|
"galician_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"galician_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "galician"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"galician": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"lowercase",
|
|
"galician_stop",
|
|
"galician_keywords",
|
|
"galician_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
[[german-analyzer]]
|
|
===== `german` analyzer
|
|
|
|
The `german` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"german_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_german_" <1>
|
|
},
|
|
"german_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"german_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "light_german"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"german": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"lowercase",
|
|
"german_stop",
|
|
"german_keywords",
|
|
"german_normalization",
|
|
"german_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
[[greek-analyzer]]
|
|
===== `greek` analyzer
|
|
|
|
The `greek` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"greek_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_greek_" <1>
|
|
},
|
|
"greek_lowercase": {
|
|
"type": "lowercase",
|
|
"language": "greek"
|
|
},
|
|
"greek_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"greek_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "greek"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"greek": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"greek_lowercase",
|
|
"greek_stop",
|
|
"greek_keywords",
|
|
"greek_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
[[hindi-analyzer]]
|
|
===== `hindi` analyzer
|
|
|
|
The `hindi` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"hindi_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_hindi_" <1>
|
|
},
|
|
"hindi_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"hindi_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "hindi"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"hindi": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"lowercase",
|
|
"indic_normalization",
|
|
"hindi_normalization",
|
|
"hindi_stop",
|
|
"hindi_keywords",
|
|
"hindi_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
[[hungarian-analyzer]]
|
|
===== `hungarian` analyzer
|
|
|
|
The `hungarian` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"hungarian_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_hungarian_" <1>
|
|
},
|
|
"hungarian_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"hungarian_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "hungarian"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"hungarian": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"lowercase",
|
|
"hungarian_stop",
|
|
"hungarian_keywords",
|
|
"hungarian_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
|
|
[[indonesian-analyzer]]
|
|
===== `indonesian` analyzer
|
|
|
|
The `indonesian` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"indonesian_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_indonesian_" <1>
|
|
},
|
|
"indonesian_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"indonesian_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "indonesian"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"indonesian": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"lowercase",
|
|
"indonesian_stop",
|
|
"indonesian_keywords",
|
|
"indonesian_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
[[irish-analyzer]]
|
|
===== `irish` analyzer
|
|
|
|
The `irish` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"irish_elision": {
|
|
"type": "elision",
|
|
"articles": [ "h", "n", "t" ]
|
|
},
|
|
"irish_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_irish_" <1>
|
|
},
|
|
"irish_lowercase": {
|
|
"type": "lowercase",
|
|
"language": "irish"
|
|
},
|
|
"irish_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"irish_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "irish"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"irish": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"irish_stop",
|
|
"irish_elision",
|
|
"irish_lowercase",
|
|
"irish_keywords",
|
|
"irish_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
[[italian-analyzer]]
|
|
===== `italian` analyzer
|
|
|
|
The `italian` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"italian_elision": {
|
|
"type": "elision",
|
|
"articles": [
|
|
"c", "l", "all", "dall", "dell",
|
|
"nell", "sull", "coll", "pell",
|
|
"gl", "agl", "dagl", "degl", "negl",
|
|
"sugl", "un", "m", "t", "s", "v", "d"
|
|
]
|
|
},
|
|
"italian_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_italian_" <1>
|
|
},
|
|
"italian_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"italian_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "light_italian"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"italian": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"italian_elision",
|
|
"lowercase",
|
|
"italian_stop",
|
|
"italian_keywords",
|
|
"italian_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
[[latvian-analyzer]]
|
|
===== `latvian` analyzer
|
|
|
|
The `latvian` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"latvian_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_latvian_" <1>
|
|
},
|
|
"latvian_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"latvian_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "latvian"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"latvian": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"lowercase",
|
|
"latvian_stop",
|
|
"latvian_keywords",
|
|
"latvian_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
[[norwegian-analyzer]]
|
|
===== `norwegian` analyzer
|
|
|
|
The `norwegian` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"norwegian_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_norwegian_" <1>
|
|
},
|
|
"norwegian_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"norwegian_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "norwegian"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"norwegian": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"lowercase",
|
|
"norwegian_stop",
|
|
"norwegian_keywords",
|
|
"norwegian_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
[[persian-analyzer]]
|
|
===== `persian` analyzer
|
|
|
|
The `persian` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"char_filter": {
|
|
"zero_width_spaces": {
|
|
"type": "mapping",
|
|
"mappings": [ "\\u200C=> "] <1>
|
|
}
|
|
},
|
|
"filter": {
|
|
"persian_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_persian_" <2>
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"persian": {
|
|
"tokenizer": "standard",
|
|
"char_filter": [ "zero_width_spaces" ],
|
|
"filter": [
|
|
"lowercase",
|
|
"arabic_normalization",
|
|
"persian_normalization",
|
|
"persian_stop"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> Replaces zero-width non-joiners with an ASCII space.
|
|
<2> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
|
|
[[portuguese-analyzer]]
|
|
===== `portuguese` analyzer
|
|
|
|
The `portuguese` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"portuguese_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_portuguese_" <1>
|
|
},
|
|
"portuguese_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"portuguese_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "light_portuguese"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"portuguese": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"lowercase",
|
|
"portuguese_stop",
|
|
"portuguese_keywords",
|
|
"portuguese_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
[[romanian-analyzer]]
|
|
===== `romanian` analyzer
|
|
|
|
The `romanian` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"romanian_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_romanian_" <1>
|
|
},
|
|
"romanian_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"romanian_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "romanian"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"romanian": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"lowercase",
|
|
"romanian_stop",
|
|
"romanian_keywords",
|
|
"romanian_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
|
|
[[russian-analyzer]]
|
|
===== `russian` analyzer
|
|
|
|
The `russian` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"russian_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_russian_" <1>
|
|
},
|
|
"russian_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"russian_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "russian"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"russian": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"lowercase",
|
|
"russian_stop",
|
|
"russian_keywords",
|
|
"russian_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
[[sorani-analyzer]]
|
|
===== `sorani` analyzer
|
|
|
|
The `sorani` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"sorani_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_sorani_" <1>
|
|
},
|
|
"sorani_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"sorani_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "sorani"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"sorani": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"sorani_normalization",
|
|
"lowercase",
|
|
"sorani_stop",
|
|
"sorani_keywords",
|
|
"sorani_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
[[spanish-analyzer]]
|
|
===== `spanish` analyzer
|
|
|
|
The `spanish` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"spanish_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_spanish_" <1>
|
|
},
|
|
"spanish_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"spanish_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "light_spanish"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"spanish": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"lowercase",
|
|
"spanish_stop",
|
|
"spanish_keywords",
|
|
"spanish_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
[[swedish-analyzer]]
|
|
===== `swedish` analyzer
|
|
|
|
The `swedish` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"swedish_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_swedish_" <1>
|
|
},
|
|
"swedish_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"swedish_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "swedish"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"swedish": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"lowercase",
|
|
"swedish_stop",
|
|
"swedish_keywords",
|
|
"swedish_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
[[turkish-analyzer]]
|
|
===== `turkish` analyzer
|
|
|
|
The `turkish` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"turkish_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_turkish_" <1>
|
|
},
|
|
"turkish_lowercase": {
|
|
"type": "lowercase",
|
|
"language": "turkish"
|
|
},
|
|
"turkish_keywords": {
|
|
"type": "keyword_marker",
|
|
"keywords": [] <2>
|
|
},
|
|
"turkish_stemmer": {
|
|
"type": "stemmer",
|
|
"language": "turkish"
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"turkish": {
|
|
"tokenizer": "standard",
|
|
"filter": [
|
|
"apostrophe",
|
|
"turkish_lowercase",
|
|
"turkish_stop",
|
|
"turkish_keywords",
|
|
"turkish_stemmer"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|
|
<2> This filter should be removed unless there are words which should
|
|
be excluded from stemming.
|
|
|
|
[[thai-analyzer]]
|
|
===== `thai` analyzer
|
|
|
|
The `thai` analyzer could be reimplemented as a `custom` analyzer as follows:
|
|
|
|
[source,js]
|
|
----------------------------------------------------
|
|
{
|
|
"settings": {
|
|
"analysis": {
|
|
"filter": {
|
|
"thai_stop": {
|
|
"type": "stop",
|
|
"stopwords": "_thai_" <1>
|
|
}
|
|
},
|
|
"analyzer": {
|
|
"thai": {
|
|
"tokenizer": "thai",
|
|
"filter": [
|
|
"lowercase",
|
|
"thai_stop"
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
----------------------------------------------------
|
|
<1> The default stopwords can be overridden with the `stopwords`
|
|
or `stopwords_path` parameters.
|