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Soundex - Wikipedia

Soundex

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Soundex是一种语音算法,利用英文字的读音计算近似值,值由四个字符构成,第一个字符为英文字母,后三个为数字。在拼音文字中有时会有会念但不能拼出正确字的情形,可用Soundex做类似模糊匹配的效果。例如Knuth和Kant二个字符串,它们的Soundex值都是 K530。更详细的说明参考Donald Knuth大师的名著:电脑程序设计的艺术 (The Art Of Computer Programming) 第三卷排序和搜寻。


[编辑] 算法简要说明

  • 将英文字按以下规则替换(除第一个字符外):
   a e h i o u w y -> 0
   b f p v -> 1
   c g j k q s x z -> 2
   d t -> 3
   l -> 4
   m n -> 5
   r -> 6
  • 去除0,对于重复的字符只保留一个
  • 返回前4个字符,不足4位以0补足

以Knuth和Kant为例:

   Knuth -> K5030 -> K53 -> K530
   Kant  -> K053  -> K53 -> K530


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