Question

我正在我的rails应用程序中实现sphinx搜索我想用模糊搜索。它应该搜索拼写错误，例如，如果输入搜索查询charact * a * ristics，它应该搜索charact * e * ristics。

我应该如何实现这个

Answer 1

Sphinx自然不允许拼写错误 - 它不关心单词拼写是否正确，它只是索引它们并匹配它们。

有两种选择 - 使用thinking-sphinx-raspell来捕捉用户搜索时的拼写错误，并为他们提供再次使用改进查询进行搜索的选择（就像Google一样）;或者可以使用soundex或metaphone形态，因此单词的索引方式可以解释它们的声音。在this page上搜索词干，你会找到相关的部分。此外，还可以阅读Sphinx's documentation。

我不知道这两个选项有多可靠 - 个人而言，我选择＃1。

Answer 2

默认情况下，Sphinx不会注意使用星号字符进行通配符搜索。不过你可以打开它：
development:
  enable_star: true
  # ... repeat for other environments

请参阅http://pat.github.io/thinking-sphinx/advanced_config.html 通配符/星形语法部分。

Answer 3

是的，Sphinx通常使用扩展匹配模式。

有以下匹配模式：

SPH_MATCH_ALL, matches all query words (default mode);
SPH_MATCH_ANY, matches any of the query words;
SPH_MATCH_PHRASE, matches query as a phrase, requiring perfect match;
SPH_MATCH_BOOLEAN, matches query as a boolean expression (see Section 5.2, “Boolean query syntax”);
SPH_MATCH_EXTENDED, matches query as an expression in Sphinx internal query language (see Section 5.3, “Extended query syntax”);
SPH_MATCH_EXTENDED2, an alias for SPH_MATCH_EXTENDED;
SPH_MATCH_FULLSCAN, matches query, forcibly using the "full scan" mode as below. NB, any query terms will be ignored, such that filters, filter-ranges and grouping will still be applied, but no text-matching.

SPH_MATCH_EXTENDED2在0.9.8和0.9.9开发周期中使用，当时内部匹配引擎被重写（为了附加功能和更好的性能）。通过0.9.9版本，旧版本已删除，SPH_MATCH_EXTENDED和SPH_MATCH_EXTENDED2现在只是别名。

<强> enable_star

在搜索前缀/中缀索引时启用星型语法（或通配符语法）。＆gt;可选，默认值为0（不使用通配符语法），以与0.9.7兼容。＆gt;已知值为0和1.

例如，假设索引是使用中缀构建的，并且enable_star是1.搜索应该如下工作：

"abcdef" query will match only those documents that contain the exact "abcdef" word in them.
"abc*" query will match those documents that contain any words starting with "abc" (including the documents which contain the exact "abc" word only);
"*cde*" query will match those documents that contain any words which have "cde" characters in any part of the word (including the documents which contain the exact "cde" word only).
"*def" query will match those documents that contain any words ending with "def" (including the documents that contain the exact "def" word only).

示例：

enable_star = 1

思考狮身人面像模糊搜索？

3 个答案: