# Hunspell Token Filter(Hunspell 詞元過濾器)
## 簡述
Hunspell過濾器是Hunspell的基礎。Hunspell字典將從文件系統上的專用hunspell目錄(?`<path.conf>/hunspell`?)中`<path.conf>/hunspell`?。?預期每個字典都有自己的目錄,以其關聯的語言環境(語言)命名。?這個字典目錄預計會保存一個`*.aff`和一個或多個`*.dic`文件(所有這些文件將自動被讀取)。?例如,假設使用默認的hunspell位置,以下目錄布局將定義`en_US`字典:
|
`- conf`
`|-- hunspell`
`|??? |-- en_US`
`|??? |??? |-- en_US.dic`
`|??? |??? |-- en_US.aff`
|
## 參數
每個字典都可以進行一個設置:
ignore_case
如果為true,字典匹配將不區分大小寫(默認為false )
這個設置可以在`elasticsearch.yml`使用全局`elasticsearch.yml`
* `indices.analysis.hunspell.dictionary.ignore_case`
或指定特定字典:
* `indices.analysis.hunspell.dictionary.en_US.ignore_case`?。
還可以在保存這些設置的`settings.yml`目錄下添加`settings.yml`文件(這將覆蓋在`elasticsearch.yml`定義的任何其他設置)。
可以通過配置分析設置來使用hunspell過濾器:
|
`{`
`"analysis"`?`: {`
`"analyzer"`?`: {`
`"en"`?`: {`
`"tokenizer"`?`:?``"standard"``,`
`"filter"`?`: [?``"lowercase"``,?``"en_US"`?`]`
`}`
`},`
`"filter"`?`: {`
`"en_US"`?`: {`
`"type"`?`:?``"hunspell"``,`
`"locale"`?`:?``"en_US"``,`
`"dedup"`?`:?``true`
`}`
`}`
`}`
`}`
|
hunspell過濾器接受四個選項:
locale
此過濾器的區域設置。 如果這沒有設置,則使用lang或者language來代替它們,因此必須設置其中一個。
dictionary
字典的名稱 您的hunspell字典的路徑應通過indices.analysis.hunspell.dictionary.location 。
dedup
如果需要返回單條結果,則需要將其設置為true 。 默認為true 。
longest_only
如果只返回最長的結果,請將其設置為true 。 默認為false :返回所有可能的結果。
與(基于算法的)?snowball stemmers(雪球詞干分析器)相反,這是基于詞典查找的,因此詞干的質量由詞典的質量決定。
## 加載字典
默認情況下,當節點啟動時,將為該字典檢查默認的Hunspell目錄(?`config/hunspell/`?),并自動加載任何字典。
通過在配置文件`indices.analysis.hunspell.dictionary.lazy`設置為`true`?,可以將字典加載實際使用。
?
## 參考
Hunspell是一個拼寫檢查器和形態分析器,專為具有豐富形態和復雜的字復合和字符編碼的語言而設計。
1. 維基百科,?[http://en.wikipedia.org/wiki/Hunspell](https://translate.googleusercontent.com/translate_c?depth=1&hl=zh-CN&rurl=translate.google.com&sl=en&sp=nmt4&tl=zh-CN&u=http://en.wikipedia.org/wiki/Hunspell&usg=ALkJrhhTe4SNBi-yzE2Ium7lZbYNdA0rjA)
2. 源代碼,?[http://hunspell.sourceforge.net/](https://translate.googleusercontent.com/translate_c?depth=1&hl=zh-CN&rurl=translate.google.com&sl=en&sp=nmt4&tl=zh-CN&u=http://hunspell.sourceforge.net/&usg=ALkJrhjW2G8qRbu0lZQh2LVWUBJYgNKtWQ)
3. 開放辦公室Hunspell字典,?[http://wiki.openoffice.org/wiki/Dictionaries](https://translate.googleusercontent.com/translate_c?depth=1&hl=zh-CN&rurl=translate.google.com&sl=en&sp=nmt4&tl=zh-CN&u=http://wiki.openoffice.org/wiki/Dictionaries&usg=ALkJrhjol_nl3ZVfCZVXqDENOiy7iD3A8g)
4. Mozilla Hunspell字典,?[https://addons.mozilla.org/en-US/firefox/language-tools/](https://translate.googleusercontent.com/translate_c?depth=1&hl=zh-CN&rurl=translate.google.com&sl=en&sp=nmt4&tl=zh-CN&u=https://addons.mozilla.org/en-US/firefox/language-tools/&usg=ALkJrhjkouoWClkhvx3I7BTP9HzM9bIOtw)
5. Chromium Hunspell字典,?[http://src.chromium.org/viewvc/chrome/trunk/deps/third_party/hunspell_dictionaries/](https://translate.googleusercontent.com/translate_c?depth=1&hl=zh-CN&rurl=translate.google.com&sl=en&sp=nmt4&tl=zh-CN&u=http://src.chromium.org/viewvc/chrome/trunk/deps/third_party/hunspell_dictionaries/&usg=ALkJrhjpxkhrlh-puMLQPulnPxd5rDvdxw)
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