<?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>0379-3982</journal-id>
<journal-title><![CDATA[Revista Tecnología en Marcha]]></journal-title>
<abbrev-journal-title><![CDATA[Tecnología en Marcha]]></abbrev-journal-title>
<issn>0379-3982</issn>
<publisher>
<publisher-name><![CDATA[Instituto Tecnológico de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0379-39822019000300024</article-id>
<article-id pub-id-type="doi">10.18845/tm.v32i2.4477</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Comparación de métodos de optimización locales y globales para la calibración y análisis de sensibilidad de un modelo hidrológico conceptual]]></article-title>
<article-title xml:lang="en"><![CDATA[Comparison of global and local optimization methods for the calibration and sensitivity analysis of a conceptual hydrological model]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mendez-Morales]]></surname>
<given-names><![CDATA[Maikel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Calvo-Valverde]]></surname>
<given-names><![CDATA[Luis Alexander]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica Escuela de Ingeniería en Construcción ]]></institution>
<addr-line><![CDATA[Cartago ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica Escuela de Ingeniería en Computación ]]></institution>
<addr-line><![CDATA[Cartago ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2019</year>
</pub-date>
<volume>32</volume>
<numero>3</numero>
<fpage>24</fpage>
<lpage>36</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0379-39822019000300024&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0379-39822019000300024&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0379-39822019000300024&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Ocho métodos de optimización global y ocho métodos de optimización local fueron utilizados para calibrar el modelo hidrológico conceptual HBV-TEC en la cuenca alta del río Toro en Costa Rica para cuatro diferentes periodos de calibración (4, 8, 12 y 16 años). Con el propósito de evaluar la sensibilidad de quedar atrapados en mínimos locales, cada método fue probado contra 50 sets de parámetros iniciales generados aleatoriamente. Todos los métodos fueron entonces evaluados en términos del desempeño de optimización y el costo computacional. Los resultados muestran un desempeño comparable entre varios métodos locales y globales dado que se correlacionan fuertemente entre ellos. Sin embargo, los métodos locales son generalmente más sensitivos a quedar atrapados en mínimos locales independientemente de la duración del periodo de calibración. El desempeño de optimización parece ser independiente del número total de llamas del modelo, el cual puede variar varios órdenes de magnitud dependiendo del método de optimización seleccionado. La selección final de un método de optimización está grandemente influenciada por su eficiencia y el nivel de recursos computacionales disponible indistintamente de clase local o global]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Eight global and eight local optimization methods were used to calibrate the HBV-TEC hydrological model on the upper Toro river catchment in Costa Rica for four different calibration periods (4, 8, 12 and 16 years). To evaluate their sensitivity to getting trapped in local minima, each method was tested against 50 sets of randomly-generated initial model parameters. All methods were then evaluated in terms of optimization performance and computational cost. Results show a comparable performance among various global and local methods as they highly correlate to one another. Nonetheless, local methods are in general more sensitive to getting trapped in local minima, irrespective of the duration of the calibration period. Performance of the various methods seems to be independent to the total number of model calls, which may vary several orders of magnitude depending on the selected optimization method. The selection of an optimization method is largely influenced by its efficiency and the available computational resources regardless of global or local class]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Local optimization]]></kwd>
<kwd lng="en"><![CDATA[Global optimization]]></kwd>
<kwd lng="en"><![CDATA[HBV]]></kwd>
<kwd lng="en"><![CDATA[Model calibration]]></kwd>
<kwd lng="en"><![CDATA[PCA]]></kwd>
<kwd lng="es"><![CDATA[Lodo de anodizado]]></kwd>
<kwd lng="es"><![CDATA[NaP1]]></kwd>
<kwd lng="es"><![CDATA[GIS]]></kwd>
<kwd lng="es"><![CDATA[Zeolita]]></kwd>
<kwd lng="es"><![CDATA[Microscopía de escaneado electrónico de barrido (MEB)]]></kwd>
<kwd lng="es"><![CDATA[difracción de rayos X (DRX)]]></kwd>
<kwd lng="es"><![CDATA[absorción atómica]]></kwd>
<kwd lng="es"><![CDATA[difractograma]]></kwd>
</kwd-group>
</article-meta>
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