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es面试题
2022-07-02 02:13:00 【CV工程师呀】
1.倒排索引是怎样运作的
答:百度
2.分词器有哪些
答:
标准分词器:按照单词分词,英文统一转为小写,过滤标点符号,中文单字分词
simple分词器:英文按照单词分词,英文统一转为小写,去掉符号,中文按照空格进行分词
whitespace分词器:中文英文按照空格分词,英文不会转为小写,不去掉标点符号
3.已经有query查询了,为什么还有有过滤查询
过滤查询不会计算数据得分,文档query查询会计算数据得分,影响查询的性能。在ES中是先进行过滤查询,再进行文档query查询。
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