Snowball token filter
使用除梗器,对单词进行除梗的过滤器。语言参数可以控制除梗器,有如下的语言可供选择: Armenian, Basque, Catalan, Danish, Dutch, English, Finnish, French, German, German2, Hungarian, Italian, Kp, Lithuanian, Lovins, Norwegian, Porter, Portuguese, Romanian, Russian, Spanish, Swedish, Turkish.
例如:
代码语言:javascript复制PUT /my_index
{
"settings": {
"analysis" : {
"analyzer" : {
"my_analyzer" : {
"tokenizer" : "standard",
"filter" : ["lowercase", "my_snow"]
}
},
"filter" : {
"my_snow" : {
"type" : "snowball",
"language" : "Lovins"
}
}
}
}
}
snowball token filter ,它可以把 sing/ sings / singing 都转化词干 sing。不管用户搜 sing、sings、singing, 他的搜索结果都是基于「sing」这个term,所得的结果集都一样。