<HTML ><HEAD ><TITLE >Relevancy </TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.73 "><LINK REL="HOME" TITLE="mnoGoSearch 3.2 reference manual" HREF="index.html"><LINK REL="UP" TITLE="Searching documents" HREF="msearch-doingsearch.html"><LINK REL="PREVIOUS" TITLE="Designing search.html" HREF="msearch-html.html"><LINK REL="NEXT" TITLE="Search queries tracking " HREF="msearch-track.html"><LINK REL="STYLESHEET" TYPE="text/css" HREF="mnogo.css"><META NAME="Description" CONTENT="mnoGoSearch - Full Featured Web site Open Source Search Engine Software over the Internet and Intranet Web Sites Based on SQL Database. It is a Free search software covered by GNU license."><META NAME="Keywords" CONTENT="shareware, freeware, download, internet, unix, utilities, search engine, text retrieval, knowledge retrieval, text search, information retrieval, database search, mining, intranet, webserver, index, spider, filesearch, meta, free, open source, full-text, udmsearch, website, find, opensource, search, searching, software, udmsearch, engine, indexing, system, web, ftp, http, cgi, php, SQL, MySQL, database, php3, FreeBSD, Linux, Unix, mnoGoSearch, MacOS X, Mac OS X, Windows, 2000, NT, 95, 98, GNU, GPL, url, grabbing"></HEAD ><BODY CLASS="sect1" BGCOLOR="#EEEEEE" TEXT="#000000" LINK="#000080" VLINK="#800080" ALINK="#FF0000" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >mnoGoSearch 3.2 reference manual: Full-featured search engine software</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="msearch-html.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 8. Searching documents</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="msearch-track.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="sect1" ><H1 CLASS="sect1" ><A NAME="rel" >Relevancy <A NAME="AEN3548" ></A ></A ></H1 ><DIV CLASS="sect2" ><H2 CLASS="sect2" ><A NAME="rel-order" >Ordering documents</A ></H2 ><P ><SPAN CLASS="application" >mnoGoSearch</SPAN > sorts results first by <TT CLASS="literal" >relevency</TT > and second by <TT CLASS="literal" >popularity rank</TT >.</P ><DIV CLASS="sect3" ><H3 CLASS="sect3" ><A NAME="relevancy" >Relevancy calculation</A ></H3 ><P >Relevancy for every found document is calculated as 100% multiply by cosine of an angle formed by weights vector for request and weights vector for document found. The number of vector coordinates is equal to multiplication of the number words forms in search query and the number of sections defined in <TT CLASS="filename" >indexer.conf</TT >. Every vector's coordinate is corresponds to a word in search query that fit one of document section. The values of this coordinate is depends on weight for this section defined by <TT CLASS="option" >wf</TT > parameter and what this word is: exactly the same as in search query or it's word form or synonym. And one more coordinate is equal to average distance between searched words in document. For query's vector this coordinate is equal to 0. </P ><P > Since sections definition located only in <TT CLASS="filename" >indexer.conf</TT > file, use <A NAME="AEN3563" ></A > <B CLASS="command" >NumSections</B > command in <TT CLASS="filename" >searchd.conf</TT > or in <TT CLASS="filename" >search.htm</TT > to specify the number od section used. By default, this value is 256. But note, <B CLASS="command" >NumSections</B > do not affect document ordering, only the relevancy value. </P ></DIV ><DIV CLASS="sect3" ><H3 CLASS="sect3" ><A NAME="poprank" >Popularity rank<A NAME="AEN3572" ></A ></A ></H3 ><P > The popularity rank calculation is made in two stages. At first stage, the value of <TT CLASS="option" >Weight</TT > parameter for every server is devide by number of links from this server. Thus, the weight of one link from this server is calculated. At second stage, for every page we find the sum of weghts of all links pointed to this page. This sum is popularity rank for this page. </P ><P ><A NAME="AEN3577" ></A > By default, the value of <TT CLASS="option" >Weight</TT > parameter is equal to 1 for all servers indexed. You may change this value by <B CLASS="command" >Weight</B > command in <TT CLASS="filename" >indexer.conf</TT > file or directly in <TT CLASS="literal" >server</TT > table, if you load servers configuration from this table. </P ><P >If you place <TT CLASS="option" ><A NAME="AEN3586" ></A >PopRankSkipSameSite yes</TT > command in <TT CLASS="filename" >indexer.conf</TT > file, <B CLASS="command" >indexer</B > will take only intersite links (i.e. links from a page on one site to a page on another site) for popularity rank calculation. </P ><P >If you place <TT CLASS="option" ><A NAME="AEN3593" ></A >PopRankFeedBack yes</TT > command in <TT CLASS="filename" >indexer.conf</TT > file, <B CLASS="command" >indexer</B > will calculate site weights before page rank calculation. To do that, <B CLASS="command" >indexer</B > calculate sum of popularity rank for all pages from same site. If this sum will great 1, the weight for site set to this sum, otherwise, site weight is set to 1. </P ></DIV ></DIV ><DIV CLASS="sect2" ><H2 CLASS="sect2" ><A NAME="rel-bool" >Boolean search <A NAME="AEN3601" ></A ></A ></H2 ><P >Please note that in case of boolean searching of two or more words, you have to enter operators (&, |, ~). I.e. it is necessary to enter "a & book" instead of "a book" (with no quotation marks).</P ></DIV ><DIV CLASS="sect2" ><H2 CLASS="sect2" ><A NAME="rel-cwords" >Crosswords <A NAME="AEN3607" ></A ></A ></H2 ><P >This feature allows to assign words between <a href="xxx"> and </a> also to a document this link leads to. It works in SQL database mode and is not supported in built-in database and Cachemode. To enable Crosswords, please use <B CLASS="command" >CrossWord yes <A NAME="AEN3611" ></A > </B > command in <TT CLASS="filename" >indexer.conf</TT > and <TT CLASS="filename" >search.htm</TT >.</P ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="msearch-html.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="msearch-track.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Designing search.html</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="msearch-doingsearch.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Search queries tracking <A NAME="AEN3618" ></A ></TD ></TR ></TABLE ></DIV ></BODY ></HTML >
