Normalization token filters | ElasticSearch 7.7 权威指南中文版

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Normalization token filtersedit

There are several token filters available which try to normalize special characters of a certain language.

Arabic	`arabic_normalization`
German	`german_normalization`
Hindi	`hindi_normalization`
Indic	`indic_normalization`
Kurdish (Sorani)	`sorani_normalization`
Persian	`persian_normalization`
Scandinavian	`scandinavian_normalization`, `scandinavian_folding`
Serbian	`serbian_normalization`