Elasticsearch: The Definitive Guide的笔记(5)

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  • JerryLeooo

    JerryLeooo (Time will tell)

    Elasticsearch集群可以包含多个索引(indices)(数据库),每一个索引可以包含多个类型(types)(表),每一个类型包含多个文档(documents)(行),然后每个文档包含多个字段(Fields)(列)。

    2015-05-28 12:17   1人喜欢

  • 陈敬

    陈敬

    https://www.elastic.co/guide/cn/elasticsearch/guide/current/index.html

    2018-01-15 16:15

  • kiwi小白

    kiwi小白

    ElasticSearch对于地理位置信息的搜索已经非常强大了

    2016-01-11 22:18

  • 小默

    小默

    A better way to incorporate popularity is to smooth out the votes value with some modifier. In other words, we want the first few votes to count a lot, but for each subsequent vote to count less. The difference between 0 votes and 1 vote should be much bigger than the difference between 10 votes and 11 votes. A typical modifier for this use case is log1p, which changes the formula to the foll...

    2015-09-26 16:50

  • Logos

    Logos (活在当下)

    Norms consume approximately 1 byte per string field per document in the index, whether or not a document contains the field. 就是这里导致了fieldNorm的计算结果总和公式norm(d) = 1 / √numTerms对应不上。 只用1byte储存,损失了精度,为了节省内存忽视精度真的好吗?

    2015-08-31 11:29

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Elasticsearch: The Definitive Guide

>Elasticsearch: The Definitive Guide