solr英文应用的基本分词器和过滤器配置

英文应用分词器和过滤器一般配置顺序

  索引(index):

    1:空格 WhitespaceTokenizer
    2:过滤词(停用词,如:on、of、a、an等) StopFilter
    3:拆字WordDelimiterFilter
    4:小写过滤LowerCaseFilter
    5:英文相近词EnglishPorterFilter
    6:去除重复词RemoveDuplicatesTokenFilter

  查询(query):(首先也是加入分词方法)

    1:查询同义词 SynonymFilter
    2:过滤词 StopFilter
    3:拆字 WordDelimiter
    4:小写过滤 LowerCaseFilter
    5:英文相近词 EnglishPorterFilter
    6:去除重复词 RemoveDuplicatesTokenFilter

 

示例配置如下:

<fieldtype name="text" class="solr.TextField" positionIncrementGap="100">
<analyzer type="index">
<tokenizer class="solr.WhitespaceTokenizerFactory"/>

<filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt"/>
<filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="1" catenateNumbers="1" catenateAll="0"/>
<filter class="solr.LowerCaseFilterFactory"/>
<filter class="solr.EnglishPorterFilterFactory" protected="protwords.txt"/>
<filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
</analyzer>
<analyzer type="query">
<tokenizer class="solr.WhitespaceTokenizerFactory"/>
<filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt" ignoreCase="true" expand="true"/>
<filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt"/>
<filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="0" catenateNumbers="0" catenateAll="0"/>
<filter class="solr.LowerCaseFilterFactory"/>
<filter class="solr.EnglishPorterFilterFactory" protected="protwords.txt"/>
<filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
</analyzer>
</fieldtype>

 这样配置以后,字段类型为“text”的就会有以上的一些处理,如下,name就会有以上的处理了。

<field name="name" type="text" indexed="true" stored="true" multiValued="true"/>

 更多的过滤器配置可以参照solr wiki:http://wiki.apache.org/solr/FrontPage

 

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