{"id":25529,"date":"2018-03-09T09:16:57","date_gmt":"2018-03-09T09:16:57","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/tecnicas-de-expansion-en-los-sistemas-de-recuperacion-de-informacion\/"},"modified":"2018-03-09T09:16:57","modified_gmt":"2018-03-09T09:16:57","slug":"tecnicas-de-expansion-en-los-sistemas-de-recuperacion-de-informacion","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/salamanca\/tecnicas-de-expansion-en-los-sistemas-de-recuperacion-de-informacion\/","title":{"rendered":"T\u00e9cnicas de expansi\u00f3n en los sistemas de recuperaci\u00f3n de informaci\u00f3n"},"content":{"rendered":"<h2>Tesis doctoral de <strong> \u00e1ngel Francisco Zazo Rodriguez <\/strong><\/h2>\n<p>Esta tesis, despu\u00e9s de analizar el estado del arte en recuperaci\u00f3n cl\u00e1sica de la informaci\u00f3n, analiza el proceso de expansi\u00f3n de consultas. Con la expansi\u00f3n de consultas se pretende mejorar la recuperaci\u00f3n respecto de una primera consulta, y es especialmente interesante con consultas cortas, ya que su grado de ambig\u00ed\u00bcedad es m\u00e1s alto.  frecuentemente los usuarios no encuentran respuestas adecuadas a sus necesidades informativas, debido fundamentalmente a problemas de inconsistencia de vocabulario, y tienen que replantear su consulta al sistema. Cuando el proceso se hace autom\u00e1ticamente, la expansi\u00f3n conlleva una ampliaci\u00f3n de nuevos t\u00e9rminos a la consulta inicial y un rec\u00e1lculo de la importancia de cada t\u00e9rmino en la nueva consulta. En este contexto, las dos dificultades principales son:  a,- la selecci\u00f3n de los t\u00e9rminos m\u00e1s adecuados para a\u00f1adir a la consulta original.  b,- la elecci\u00f3n del mecanismo de pesado de los nuevos t\u00e9rminos.  en esta tesis se describen y analizan las diferentes t\u00e9cnicas existentes hoy d\u00eda en expansi\u00f3n de consultas, y se realiza una amplia gama de experimentos conducentes a obtener cirterios de aplicabilidad los suficientemente robustos en diferentes condiciones. Sistem\u00e1ticamente se desarrollan los experimentos utilizando dos colecciones documentales de prueba bastante diferentes en tama\u00f1o y calidad, una de ellas desarrollada en el grupo de investigaci\u00f3n del doctorando, y la otra desarrolla en las conferencias clef. Son especialmente interesantes los experimentos y resultados en expansi\u00f3n utilizando tesauros de asociaci\u00f3n y similitud, aplicados global y localmente.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>T\u00e9cnicas de expansi\u00f3n en los sistemas de recuperaci\u00f3n de informaci\u00f3n<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 T\u00e9cnicas de expansi\u00f3n en los sistemas de recuperaci\u00f3n de informaci\u00f3n <\/li>\n<li><strong>Autor:<\/strong>\u00a0 \u00e1ngel Francisco Zazo Rodriguez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Salamanca<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 19\/09\/2003<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Carlos Garcia Figuerola<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal:  Miguel quintales Luis Antonio <\/li>\n<li>ernest Abadal falgueras (vocal)<\/li>\n<li>Francisco Sanchis marco (vocal)<\/li>\n<li>julio Gonzalo arroyo (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de \u00e1ngel Francisco Zazo Rodriguez Esta tesis, despu\u00e9s de analizar el estado del arte en recuperaci\u00f3n cl\u00e1sica de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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