<?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>S1405-55462008000400008</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Similitud Semántica entre Sistemas de Objetos Geográficos Aplicada a la Generalización de Datos Geoespaciales]]></article-title>
<article-title xml:lang="en"><![CDATA[Semantic Similarity between Systems of Geographic Objects Applied to Generalization of Geospatial Data]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreno Ibarra]]></surname>
<given-names><![CDATA[Marco Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Levachkine]]></surname>
<given-names><![CDATA[Serguei]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,IPN Centro de Investigación en Computación ]]></institution>
<addr-line><![CDATA[México D.F.]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2008</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2008</year>
</pub-date>
<volume>12</volume>
<numero>2</numero>
<fpage>232</fpage>
<lpage>241</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-55462008000400008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-55462008000400008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-55462008000400008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[The thesis presents an approach to verify the consistency of generalized geospatial data at a conceptual level. The principal stages of proposed methodology are Analysis, Synthesis, and Verification. Analysis is focused on extracting the peculiarities of spatial relations by means of quantitative measures. Synthesis is used to generate a conceptual representation (ontology) that explicitly and qualitatively represents the relations between geospatial objects, resulting in tuples called herein semantic descriptions. Verification consists of a comparison between two semantic descriptions (description of source and generalized data): we measure the semantic distance (confusion) between ontology local concepts, generating three global concepts Equal, Unequal, and Equivalent. They measure the (in) consistency of generalized data: Equal and Equivalent - their consistency, while Unequal - an inconsistency. The method does not depend on coordinates, scales, units of measure, cartographic projection, representation format, geometric primitives, and so on. The approach is applied and tested on the generalization of two topographic layers: rivers and elevation contour lines (case of study).]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Esta tesis presenta un método para verificar la consistencia de datos geoespaciales generalizados, utilizando únicamente una representación conceptual. Las principales etapas de la solución propuesta son Análisis, Síntesis y Verificación. El Análisis tiene como propósito extraer las particularidades que tienen los objetos geográficos usando medidas cuantitativas. La Síntesis tiene como propósito generar una representación conceptual (ontología) que cualitativa y explícitamente representa las relaciones entre los objetos geoespaciales, obteniendo tuplas llamadas descripciones semánticas. La Verificación consiste de una comparación entre dos descripciones semánticas (descripción de los datos fuente y de los datos generalizados): consiste en medir la distancia semántica (confusión) entre los conceptos locales de la ontología, generando tres conceptos: Igual, Desigual y Equivalente, los cuales miden la (in)consistencia de los datos generalizados. Igual y Equivalente representan consistencias, mientras que Desigual representa una inconsistencia. El método no depende de coordenadas, escalas, unidades de medida, proyección cartográfica, formato de representación, primitivas geométricas, entre otras. El caso de estudio es la generalización de los ríos y las curvas de nivel.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[semantic similarity]]></kwd>
<kwd lng="en"><![CDATA[generalization]]></kwd>
<kwd lng="en"><![CDATA[ontology]]></kwd>
<kwd lng="en"><![CDATA[geographic objects]]></kwd>
<kwd lng="es"><![CDATA[similitud semántica]]></kwd>
<kwd lng="es"><![CDATA[generalización]]></kwd>
<kwd lng="es"><![CDATA[objetos geográficos]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="verdana" size="4">Resumen de tesis doctoral</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="4"><b>Similitud Sem&aacute;ntica entre Sistemas de Objetos Geogr&aacute;ficos Aplicada a la Generalizaci&oacute;n de Datos Geoespaciales</b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="3"><b><i>Semantic Similarity between Systems of Geographic Objects Applied to Generalization of Geospatial Data</i></b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Graduated: Marco Antonio Moreno Ibarra    <br> </b><i>Centro de Investigaci&oacute;n en Computaci&oacute;n del IPN    <br> Av. Juan de Dios B&aacute;tiz s/n Esq. Miguel Oth&oacute;n de Mendiz&aacute;bal    <br> C.P. 07738 M&eacute;xico D.F.    ]]></body>
<body><![CDATA[<br> </i><b><i> </i></b>e&#150;mail: <a href="mailto:marcomoreno@cic.ipn.mx">marcomoreno@cic.ipn.mx</a></font></p>     <p align="justify"><font face="verdana" size="2"><b><i>Advisor: </i>Serguei Levachkine    <br> </b><i>Centro de Investigaci&oacute;n en Computaci&oacute;n del IPN    <br> Av. Juan de Dios B&aacute;tiz s/n Esq. Miguel Oth&oacute;n de Mendiz&aacute;bal    <br> C.P. 07738 M&eacute;xico D.F.     <br> </i>e&#150;mail: <a href="mailto:sergei@cic.ipn.mx">sergei@cic.ipn.mx</a></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2">Graduated in: October 25, 2007</font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">The thesis presents an approach to verify the consistency of generalized geospatial data at a conceptual level. The principal stages of proposed methodology are Analysis, Synthesis, and Verification. Analysis is focused on extracting the peculiarities of spatial relations by means of quantitative measures. Synthesis is used to generate a conceptual representation (ontology) that explicitly and qualitatively represents the relations between geospatial objects, resulting in tuples called herein semantic descriptions. Verification consists of a comparison between two semantic descriptions (description of source and generalized data): we measure the semantic distance (confusion) between ontology local concepts, generating three global concepts Equal, Unequal, and Equivalent. They measure the (in) consistency of generalized data: Equal and Equivalent &#150; their consistency, while Unequal &#150; an inconsistency. The method does not depend on coordinates, scales, units of measure, cartographic projection, representation format, geometric primitives, and so on. The approach is applied and tested on the generalization of two topographic layers: rivers and elevation contour lines (case of study).</font></p>     <p align="justify"><font face="verdana" size="2"><b>Keywords: </b>semantic similarity, generalization, ontology, geographic objects</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>     <p align="justify"><font face="verdana" size="2">Esta tesis presenta un m&eacute;todo para verificar la consistencia de datos geoespaciales generalizados, utilizando &uacute;nicamente una representaci&oacute;n conceptual. Las principales etapas de la soluci&oacute;n propuesta son An&aacute;lisis, S&iacute;ntesis y Verificaci&oacute;n. El An&aacute;lisis tiene como prop&oacute;sito extraer las particularidades que tienen los objetos geogr&aacute;ficos usando medidas cuantitativas. La S&iacute;ntesis tiene como prop&oacute;sito generar una representaci&oacute;n conceptual (ontolog&iacute;a) que cualitativa y expl&iacute;citamente representa las relaciones entre los objetos geoespaciales, obteniendo tuplas llamadas descripciones sem&aacute;nticas. La Verificaci&oacute;n consiste de una comparaci&oacute;n entre dos descripciones sem&aacute;nticas (descripci&oacute;n de los datos fuente y de los datos generalizados): consiste en medir la distancia sem&aacute;ntica (confusi&oacute;n) entre los conceptos locales de la ontolog&iacute;a, generando tres conceptos: Igual, Desigual y Equivalente, los cuales miden la (in)consistencia de los datos generalizados. Igual y Equivalente representan consistencias, mientras que Desigual representa una inconsistencia. El m&eacute;todo no depende de coordenadas, escalas, unidades de medida, proyecci&oacute;n cartogr&aacute;fica, formato de representaci&oacute;n, primitivas geom&eacute;tricas, entre otras. El caso de estudio es la generalizaci&oacute;n de los r&iacute;os y las curvas de nivel.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Palabras clave: </b>similitud sem&aacute;ntica, generalizaci&oacute;n, objetos geogr&aacute;ficos</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/v12n2/v12n2a8.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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