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>mnoGoSearch 3.2 reference manual: Full-featured search engine software</TH
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>Chapter 8. Searching documents</TD
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><H1
CLASS="sect1"
><A
NAME="fuzzy"
>Fuzzy search</A
></H1
><DIV
CLASS="sect2"
><H2
CLASS="sect2"
><A
NAME="ispell"
>Ispell
<A
NAME="AEN3657"
></A
></A
></H2
><P
>When mnoGoSearch is used with ispell support all words
are normalized. It allows finding different grammatical forms of the
same words. During indexing all words are stored as in the
database. During the search all forms of the given keyword are
selected and are taken into account. E.g. search front-end will try to
find the word "test" if "testing" or "tests" is given in search
query. </P
><DIV
CLASS="sect3"
><H3
CLASS="sect3"
><A
NAME="typesispellfiles"
>Two types of ispell files</A
></H3
><P
>MnoGoSearch understands two types of ispell
files: affixes and dictionaries. Ispell affixes file contains rules
for words and has approximately the following format:
<PRE
CLASS="programlisting"
> Flag V:
E > -E, IVE # As in create> creative
[^E] > IVE # As in prevent > preventive
Flag *N:
E > -E, ION # As in create > creation
Y > -Y, ICATION # As in multiply > multiplication
[^EY] > EN # As in fall > fallen
</PRE
>
</P
><P
>Ispell dictionary file contains words themselves and has the following format:
<PRE
CLASS="programlisting"
> wop/S
word/DGJMS
wordage/S
wordbook
wordily
wordless/P
</PRE
>
</P
></DIV
><DIV
CLASS="sect3"
><H3
CLASS="sect3"
><A
NAME="using-ispell"
>Using Ispell</A
></H3
><P
>To make mnoGoSearch support ispell you must
specify Affix and Spell commands in <TT
CLASS="filename"
>search.htm</TT
>
file. The format of commands:
<PRE
CLASS="programlisting"
> Affix [lang] [charset] [ispell affixes file name]
Spell [lang] [charset] [ispell dictionary filename]
</PRE
>
</P
><P
>The first parameter of both commands is two
letters language abbreviation. The second is ispell files charset.
The third one is filename. File names are relative to mnoGoSearch
<TT
CLASS="literal"
>/etc</TT
> directory. Absolute paths can be also
specified.</P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Note: </B
>Simultaneous loading of several languages is supported, e.g.:
<PRE
CLASS="programlisting"
> Affix en iso-8859-1 en.aff
Spell en iso-8859-1 en.dict
Affix de iso-8859-1 de.aff
Spell de iso-8859-1 de.dict
</PRE
>
</P
><P
>Will load support for both English and German languages.</P
></BLOCKQUOTE
></DIV
><P
>If you use <TT
CLASS="literal"
>searchd</TT
>, add the same commands to <TT
CLASS="filename"
>searchd.conf</TT
>.</P
><P
>When mnoGoSearch is used with ispell support it
is recommended to use <TT
CLASS="literal"
>searchd</TT
>, especially for
several languages support. Otherwise the starting time of
<TT
CLASS="filename"
>search.cgi</TT
> increases.</P
></DIV
><DIV
CLASS="sect3"
><H3
CLASS="sect3"
><A
NAME="addwords-dict"
>Customizing dictionary</A
></H3
><P
>It is possible that several rare words are found
in your site which are not in ispell dictionaries. You may create the
list of such words in plain text file with the following format (one
word per line):
<PRE
CLASS="programlisting"
> rare.dict:
----------
webmaster
intranet
.......
www
http
---------
</PRE
>
</P
><P
>You may also use ispell flags in this file (for
ispell flags refer to ISpell documentation). This will allow not
writing the same word with different endings to the rare words file,
for example "webmaster" and "webmasters". You may choose the word
which has the same changing rules from existing ispell dictionary and
just to copy flags from it. For example, English dictionary has this
line:</P
><P
> <TT
CLASS="literal"
>postmaster/MS</TT
>
</P
><P
>So, webmaster with MS flags will be probably OK:</P
><P
> <TT
CLASS="literal"
>webmaster/MS</TT
>
</P
><P
>Then copy this file to /etc directory of
mnoGoSearch and add this file by Spell command in ISpell tab of
mnoGoSearch:</P
><P
>During next reindexing using of all documents
new words will be considered as words with correct spelling. The only
really incorrect words will remain.</P
></DIV
></DIV
><DIV
CLASS="sect2"
><H2
CLASS="sect2"
><A
NAME="synonyms"
>Synonyms
<A
NAME="AEN3697"
></A
></A
></H2
><P
>Beginning from mnoGoSearch version 3.2 synonyms-based
inexplicit search is supported.</P
><P
>Synonyms files are installed into
<TT
CLASS="filename"
>etc/synonym</TT
> subdirectory of mnoGoSearch
installation.</P
><P
><A
NAME="AEN3703"
></A
>
To enable synonyms, add to
<TT
CLASS="filename"
>search.htm</TT
> search template commands like
<TT
CLASS="literal"
>Synonym <filename></TT
>, e.g.:
<PRE
CLASS="programlisting"
> Synonym synonym/english.syn
Synonym synonym/russian.syn
</PRE
>
</P
><P
>Filenames are relative to <TT
CLASS="filename"
>etc</TT
>
directory of mnoGoSearch installation or absolute if begin with
/</P
><P
>If you use <TT
CLASS="literal"
>searchd</TT
>, add the same
commands to <TT
CLASS="filename"
>searchd.conf</TT
>.</P
><P
>Please feel free to send us your own synonyms lists at
<TT
CLASS="email"
><<A
HREF="mailto:devel@mnogosearch.org"
>devel@mnogosearch.org</A
>></TT
>. As an example you may take the
english synonyms file. In the beginning of the list please specify the
following two commands:
<PRE
CLASS="programlisting"
> Language: en
Charset: us-ascii
</PRE
>
</P
><P
></P
><UL
><LI
><P
> <TT
CLASS="varname"
>Language</TT
> - standard
(ISO 639) two-letter language abbreviation.</P
></LI
><LI
><P
> <TT
CLASS="varname"
>Charset</TT
> - any
charset supported by mnoGoSearch (see <A
HREF="msearch-international.html#charset"
>the Section called <I
>Character sets
<A
NAME="AEN2429"
></A
></I
> in Chapter 7</A
>).</P
></LI
></UL
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