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