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Documentation update.

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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@41315 c90b9560-bf6c-de11-be94-00142212c4b1
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Sergey Kartashoff 2001-02-16 13:55:22 +00:00
parent 80187e31e4
commit 69311f02de
1 changed files with 67 additions and 2 deletions
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69
functions/mnogosearch.xml
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@ -161,7 +161,73 @@
UDM_PARAM_STOPTABLE - Load stop words from the given SQL table. You may use several StopwordTable commands.
This command has no effect when compiled without SQL database support.
</simpara>
</listitem>
</listitem>
<listitem>
<simpara>
UDM_PARAM_WEIGHT_FACTOR - represents weight factors for specific document parts. Currently body, title, keywords, description, url are supported.
To activate this feature please use degrees of 2 in *Weight commands of
the indexer.conf. Let's imagine that we have these weights:
</simpara>
<simpara>URLWeight 1</simpara>
<simpara>BodyWeight 2</simpara>
<simpara>TitleWeight 4</simpara>
<simpara>KeywordWeight 8</simpara>
<simpara>DescWeight 16</simpara>
<simpara>
As far as indexer uses bit OR operation for word weights when some
word presents several time in the same document, it is possible at search
time to detect word appearance in different document parts. Word which
appears only in the body will have 00000010 argegate weight (in binary notation).
Word used in all document parts will have 00011111 aggregate weight.
</simpara>
<simpara>
This parameter's value is a string of hex digits ABCDE. Each digit is a factor for corresponding bit in word weight. For the given above weights
configuration:
</simpara>
<simpara>E is a factor for weight 1 (URL Weight bit)</simpara>
<simpara>D is a factor for weight 2 (BodyWeight bit)</simpara>
<simpara>C is a factor for weight 4 (TitleWeight bit)</simpara>
<simpara>B is a factor for weight 8 (KeywordWeight bit)</simpara>
<simpara>A is a factor for weight 16 (DescWeight bit)</simpara>
<simpara>
Examples:
</simpara>
<simpara>
UDM_PARAM_WEIGHT_FACTOR=00001 will search through URLs only.
</simpara>
<simpara>
UDM_PARAM_WEIGHT_FACTOR=00100 will search through Titles only.
</simpara>
<simpara>
UDM_PARAM_WEIGHT_FACTOR=11100 will search through Title,Keywords,Desctription but not through URL and Body.
</simpara>
<simpara>
UDM_PARAM_WEIGHT_FACTOR=F9421 will search through:
</simpara>
<simpara>Description with factor 15 (F hex)</simpara>
<simpara>Keywords with factor 9</simpara>
<simpara>Title with factor 4</simpara>
<simpara>Body with factor 2</simpara>
<simpara>URL with factor 1</simpara>
<simpara>
If UDM_PARAM_WEIGHT_FACTOR variable is ommited, original weight value is
taken to sort results. For a given above weight configuration it means
that document description has a most big weight 16.
</simpara>
</listitem>
<listitem>
<simpara>
UDM_PARAM_WORD_MATCH - word match. You may use this parameter to choose word match type. This feature works only
in "single" and "multi" modes using SQL based and built-in database. It does not work in cachemode and other modes
since they use word CRC and do not support substring search.
Available values:
</simpara>
<simpara>UDM_MATCH_BEGIN - word beginning match;</simpara>
<simpara>UDM_MATCH_END - word ending match;</simpara>
<simpara>UDM_MATCH_WORD - whole word match;</simpara>
<simpara>UDM_MATCH_SUBSTR - word substring match.</simpara>
</listitem>
</itemizedlist>
</refsect1>
</refentry>
@ -599,4 +665,3 @@ sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
-->