<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1405-5546</journal-id>
<journal-title><![CDATA[Computación y Sistemas]]></journal-title>
<abbrev-journal-title><![CDATA[Comp. y Sist.]]></abbrev-journal-title>
<issn>1405-5546</issn>
<publisher>
<publisher-name><![CDATA[Instituto Politécnico Nacional, Centro de Investigación en Computación]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-55462014000300011</article-id>
<article-id pub-id-type="doi">10.13053/CyS-18-3-2028</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Vector Space Basis Change in Information Retrieval]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mbarek]]></surname>
<given-names><![CDATA[Rabeb]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tmar]]></surname>
<given-names><![CDATA[Mohamed]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hattab]]></surname>
<given-names><![CDATA[Hawete]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,University of Sfax Institute of Computer Science and Multimedia Multimedia Information Systems and Advanced Computing Laboratory]]></institution>
<addr-line><![CDATA[Sfax ]]></addr-line>
<country>Túnez</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Umm-Al-Qura University  ]]></institution>
<addr-line><![CDATA[Mecca ]]></addr-line>
<country>Arabia Saudita</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2014</year>
</pub-date>
<volume>18</volume>
<numero>3</numero>
<fpage>569</fpage>
<lpage>579</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-55462014000300011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-55462014000300011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-55462014000300011&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[The Vector Space Basis Change (VSBC) is an algebraic operator responsible for change of basis and it is parameterized by a transition matrix. If we change the vector space basis, then each vector component changes depending on this matrix. The strategy of VSBC has been shown to be effective in separating relevant documents and irrelevant ones. Recently, using this strategy, some feedback algorithms have been developed. To build a transition matrix some optimization methods have been used. In this paper, we propose to use a simple, convenient and direct method to build a transition matrix. Based on this method we develop a relevance feedback algorithm. Experimental results on a TREC collection show that our proposed method is effective and generally superior to known VSBC-based models. We also show that our proposed method gives a statistically significant improvement over these models.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Vector space model]]></kwd>
<kwd lng="en"><![CDATA[vector space basis change]]></kwd>
<kwd lng="en"><![CDATA[VSBC-based model]]></kwd>
<kwd lng="en"><![CDATA[relevance feedback]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  	    <p align="justify"><font face="verdana" size="4">Art&iacute;culos regulares</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="4"><b>Vector Space Basis Change in Information Retrieval</b></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="2"><b>Rabeb Mbarek<sup>1</sup>, Mohamed Tmar<sup>1</sup>, and Hawete Hattab<sup>2</sup></b></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><sup><i>1</i></sup> <i>Multimedia Information Systems and Advanced Computing Laboratory, High Institute of Computer Science and Multimedia, University of Sfax, Sfax, Tunisia.</i> <a href="mailto:rabeb.hattab@gmail.com">rabeb.hattab@gmail.com</a>, <a href="mailto:mohamedtmar@yahoo.fr">mohamedtmar@yahoo.fr</a></font></p>  	    <p align="justify"><font face="verdana" size="2"><i><sup>2</sup> Umm Al&#45;Qura University, Makkah, Saudi Arabia.</i> <a href="mailto:hattab.hawete@yahoo.fr">hattab.hawete@yahoo.fr</a>.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Article received on 07/01/2014.    <br> 	Accepted on 30/01/2014.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>  	    <p align="justify"><font face="verdana" size="2">The Vector Space Basis Change (VSBC) is an algebraic operator responsible for change of basis and it is parameterized by a transition matrix. If we change the vector space basis, then each vector component changes depending on this matrix. The strategy of VSBC has been shown to be effective in separating relevant documents and irrelevant ones. Recently, using this strategy, some feedback algorithms have been developed. To build a transition matrix some optimization methods have been used. In this paper, we propose to use a simple, convenient and direct method to build a transition matrix. Based on this method we develop a relevance feedback algorithm. Experimental results on a TREC collection show that our proposed method is effective and generally superior to known VSBC&#45;based models. We also show that our proposed method gives a statistically significant improvement over these models.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> Vector space model, vector space basis change, VSBC&#45;based model, relevance feedback.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><a href="/pdf/cys/v18n3/v18n3a11.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>References</b></font></p>  	    ]]></body>
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