ik_smart 与 ik_max_word到底有啥区别？

ik_smart 与 ik_max_word 的异同

首先来看下官方的FAQs

What is the difference between ik_max_word and ik_smart?

ik_max_word: Performs the finest-grained segmentation of the text. For example, it will segment "中华人民共和国国歌" into "中华人民共和国,中华人民,中华,华人,人民共和国,人民,人,民,共和国,共和,和,国国,国歌", exhaustively generating various possible combinations, suitable for Term Query.

ik_smart: Performs the coarsest-grained segmentation of the text. For example, it will segment "中华人民共和国国歌" into "中华人民共和国,国歌", suitable for Phrase queries.

Note: ik_smart is not a subset of ik_max_word.

官方这里简单的描述了一下使用用途，即：

• 1. ik_smart 比较适合 match_phrase query，而 ik_max_word 更合适 term query。

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