{"id":12078,"date":"2025-01-23T15:26:03","date_gmt":"2025-01-23T14:26:03","guid":{"rendered":"http:\/\/sidor.uvigo.es\/?p=12078"},"modified":"2025-01-23T15:27:41","modified_gmt":"2025-01-23T14:27:41","slug":"expertos-nacionais-e-internacionais-intercambian-en-vigo-ideas-e-avances-sobre-as-curvas-roc","status":"publish","type":"post","link":"https:\/\/sidor.uvigo.es\/en\/expertos-nacionais-e-internacionais-intercambian-en-vigo-ideas-e-avances-sobre-as-curvas-roc\/","title":{"rendered":"Expertos nacionais e internacionais intercambian en Vigo ideas e avances sobre as curvas ROC"},"content":{"rendered":"<h3>\u00c9 unha ferramenta estat\u00edstica para a an\u00e1lise e avaliaci\u00f3n de procedementos de clasificaci\u00f3n<\/h3>\n<div id='gallery-1' class='gallery galleryid-12078 gallery-columns-1 gallery-size-gallery-image-slide'><figure class='gallery-item'><div class='gallery-icon landscape'><div class=\"gallery-item-open\"><span class=\"sr-only\">Open<\/span><\/div>\n                   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https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc2-445x250.jpg 445w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc2-800x450.jpg 800w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc2.jpg 1400w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/a>\n                <\/div><div class=\"gallery-item-slider-controls-position\"><a class=\"gallery-item-download\" href=\"https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc2.jpg\" download>Download<\/a><\/div><\/figure><figure class='gallery-item'><div class='gallery-icon landscape'><div class=\"gallery-item-open\"><span class=\"sr-only\">Open<\/span><\/div>\n                    <a href='https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1-1280x720.jpg\" class=\"attachment-gallery-image-slide size-gallery-image-slide\" alt=\"\" srcset=\"https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1-1280x720.jpg 1280w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1-300x169.jpg 300w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1-1024x576.jpg 1024w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1-768x432.jpg 768w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1-445x250.jpg 445w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1-800x450.jpg 800w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1.jpg 1400w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/a>\n                <\/div><div class=\"gallery-item-slider-controls-position\"><a class=\"gallery-item-download\" href=\"https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1.jpg\" download>Download<\/a><\/div><\/figure><div class=\"gallery-item-slider-controls\"><div class=\"gallery-item-slider-counter\"><span><\/span><\/div><div class=\"gallery-item-slider-arrows\"><\/div><\/div>\n\t\t<\/div>\n<div class=\"modal modal-gallery fade\" id=\"galleryModal\" tabindex=\"-1\" role=\"dialog\" aria-labelledby=\"gallery-1-modal-12082\" aria-hidden=\"true\"><button type=\"button\" class=\"close\" data-dismiss=\"modal\" aria-label=\"Close\"><span class=\"sr-only\" aria-hidden=\"true\">Close<\/span><\/button><div class=\"modal-dialog modal-lg modal-dialog-centered\" role=\"document\"><div class=\"modal-content\"><div id='gallery-1-modal' class='gallery gallery-modal'><figure class='gallery-item'>\n                <div class='gallery-icon landscape'>\n                    <img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc3-1280x720.jpg\" class=\"attachment-gallery-image-slide size-gallery-image-slide\" alt=\"\" srcset=\"https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc3-1280x720.jpg 1280w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc3-300x169.jpg 300w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc3-1024x576.jpg 1024w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc3-768x432.jpg 768w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc3-445x250.jpg 445w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc3-800x450.jpg 800w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc3.jpg 1400w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/>\n                <\/div><div class=\"gallery-item-slider-controls-position\"><a class=\"gallery-item-download\" href=\"https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc3.jpg\" download>Download<\/a><\/div><\/figure><figure class='gallery-item'>\n                <div class='gallery-icon landscape'>\n                    <img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc2-1280x720.jpg\" class=\"attachment-gallery-image-slide size-gallery-image-slide\" alt=\"\" srcset=\"https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc2-1280x720.jpg 1280w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc2-300x169.jpg 300w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc2-1024x576.jpg 1024w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc2-768x432.jpg 768w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc2-445x250.jpg 445w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc2-800x450.jpg 800w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc2.jpg 1400w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/>\n                <\/div><div class=\"gallery-item-slider-controls-position\"><a class=\"gallery-item-download\" href=\"https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc2.jpg\" download>Download<\/a><\/div><\/figure><figure class='gallery-item'>\n                <div class='gallery-icon landscape'>\n                    <img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1-1280x720.jpg\" class=\"attachment-gallery-image-slide size-gallery-image-slide\" alt=\"\" srcset=\"https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1-1280x720.jpg 1280w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1-300x169.jpg 300w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1-1024x576.jpg 1024w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1-768x432.jpg 768w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1-445x250.jpg 445w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1-800x450.jpg 800w, https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1.jpg 1400w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/>\n                <\/div><div class=\"gallery-item-slider-controls-position\"><a class=\"gallery-item-download\" href=\"https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc1.jpg\" download>Download<\/a><\/div><\/figure><div class=\"gallery-item-slider-controls\"><div class=\"gallery-item-slider-counter\"><span><\/span><\/div><div class=\"gallery-item-slider-arrows\"><\/div><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n<p>Medicina, intelixencia artificial ou econom\u00eda son algunhas das \u00e1reas nas que actualmente se empregan as curvas ROC, <em>Receiver Operating Characteristic<\/em>, unha ferramenta estat\u00edstica para a an\u00e1lise e avaliaci\u00f3n de procedementos de clasificaci\u00f3n. As investigaci\u00f3n actuais, inclu\u00eddos m\u00e9todos de estimaci\u00f3n e inferencia para curvas ROC; avaliaci\u00f3n de marcadores e de procedementos de clasificaci\u00f3n, selecci\u00f3n de puntos de corte, entre outras tem\u00e1ticas, centran o programa do I<em>nternational Workshop on ROC Analysis and Related Topics (<a href=\"https:\/\/roc2025.webs.uvigo.gal\/\">ROC2025<\/a>)<\/em> que hoxe e ma\u00f1\u00e1 se celebra na sede cidade da Escola de Enxe\u00f1ar\u00eda Industrial, organizado polo Departamento de Estat\u00edstica e Investigaci\u00f3n Operativa e o grupo de investigaci\u00f3n <a href=\"http:\/\/sidor.uvigo.es\/en\/\">SiDOR<\/a> da UVigo.<\/p>\n<p>18 relatorios, organizados en seis sesi\u00f3ns, integran o programa cient\u00edfico no que participa persoal investigador novo, que est\u00e1 a facer a s\u00faa tese ou acaba de rematala, e tam\u00e9n po\u00f1entes con ampla experiencia e reco\u00f1ecemento internacional, como \u00a0Christos Nakas e Leonidas Bantis, autores do libro <em>ROC Analysis for Classification and Prediction in Practice<\/em>, publicado por CRC Press no ano 2023; \u00a0Mar\u00eda del Carmen Pardo, co-editora da revista cient\u00edfica TEST (Springer) ou Graciela Boente (Universidad de Buenos Aires), colaboradora habitual do grupo SiDOR e acad\u00e9mica titular da Academia Nacional de Ciencias Exactas, F\u00edsicas y Naturales de Arxentina. \u201cO obxectivo principal \u00e9 reunir nun \u00fanico evento investigadoras e investigadores especialistas nesta tem\u00e1tica para intercambiar ideas e co\u00f1ecer os traballos que est\u00e1n elaborando na actualidade. Isto permitir\u00edanos co\u00f1ecer cal \u00e9 o estado da arte neste campo e establecer futuras colaboraci\u00f3ns\u201d, explica Juan Carlos Pardo Fern\u00e1ndez, director do Departamento de Estat\u00edstica e Investigaci\u00f3n Operativa da UVigo, que incl\u00fae as curvas ROC entre as s\u00faas li\u00f1as de traballo desde hai moitos anos, ao longo dos que realizou frecuentes publicaci\u00f3ns sobre esta materia.<\/p>\n<p>Esta \u00e9 a primeira vez que o Departamento de Estat\u00edstica e Investigaci\u00f3n Operativa da UVigo, co financiamento do Centro de Investigaci\u00f3n e Tecnolox\u00eda Matem\u00e1tica de Galicia (CITMAga) organiza un seminario tem\u00e1tico sobre curvas ROC e temas af\u00edns.<\/p>\n<h3>Utilidade das curvas ROC<\/h3>\n<p>Un exemplo moi doado para entender o uso da curvas ROC, explica Juan Carlos Pardo,\u00a0ocorre cando se fai unha diagnose m\u00e9dica para decidir se unha persoa ten ou non unha determinada enfermidade. \u201cEn funci\u00f3n das caracter\u00edsticas do paciente (s\u00edntomas, an\u00e1lise de sangue,&#8230;), este ser\u00e1 clasificado como san ou enfermo. Calquera procedemento de clasificaci\u00f3n non \u00e9 perfecto e aqu\u00ed aparecen d\u00faas cantidades moi importantes: a sensibilidade, que \u00e9 a probabilidade de diagnosticar como enferma a unha persoa que realmente est\u00e1 enferma, e a especificidade, que \u00e9 a probabilidade de diagnosticar como sa a unha persoa que realmente est\u00e1 sa. Obviamente, o ideal ser\u00eda que a proba diagn\u00f3stica tivese sensibilidade e especificidade iguais a 1, pero isto case nunca ocorre na pr\u00e1ctica, porque poden aparecer falsos negativos e falsos positivos\u201d. Son as curvas ROC as que permiten saber como se comportan a sensibilidade e a especificidade cando se cambia o criterio de clasificaci\u00f3n, curvas que ter\u00e1n que ser estimadas a partir de datos. \u201cPrecisamente ao dese\u00f1o deses procedementos en situaci\u00f3ns m\u00e1is ou menos complexas \u00e9 o traballo que desenvolvemos as persoas que nos dedicamos \u00e1 investigaci\u00f3n en estat\u00edstica metodol\u00f3xica\u201d, aclara o director do Departamento de Estat\u00edstica e Investigaci\u00f3n Operativa da UVigo.<\/p>\n<p>Pardo incide no car\u00e1cter eminentemente pr\u00e1ctico das curvas ROC, que aparecen de xeito natural en calquera situaci\u00f3n que requira a avaliaci\u00f3n dun procedemento de clasificaci\u00f3n. \u201cOrixinalmente foron propostas no campo da teor\u00eda do sinal durante a Segunda Guerra Mundial, pero actualmente empr\u00e9ganse en moitas \u00e1reas: medicina, intelixencia artificial, econom\u00eda, etc\u201d.<\/p>\n<h3>Ampla experiencia en organizaci\u00f3n de eventos<\/h3>\n<p>A\u00ednda que a reuni\u00f3n cient\u00edfica que hoxe e ma\u00f1\u00e1 se celebra na sede cidade da Escola de Enxe\u00f1ar\u00eda Industrial da UVigo \u00e9 a primeira centrada na tem\u00e1tica ROC, SiDOR e o Departamento que dirixe Juan Carlos Pardo conta cunha ampla experiencia na organizaci\u00f3n de congresos \u00a0como o da<em> International Society for Clinical Biostatistics<\/em>, que en 2017, reuniu a m\u00e1is de 600 persoas, ou a XIX Conferencia Espa\u00f1ola e VIII Encuentro Iberoamericano de Biometr\u00eda en 2023, no que participaron cerca de 200 persoas.<\/p>\n<p>Nesta ocasi\u00f3n, \u201ca\u00ednda que organizaci\u00f3n de eventos cient\u00edficos sempre sup\u00f3n un esforzo extra ademais das nosas obrigas docentes, investigadoras e de xesti\u00f3n, ao tratarse dun evento pequeno, resultounos moi manexable\u201d, explica Juan Carlos Pardo, que se encargou da parte cient\u00edfica, mentres que Pablo Rodr\u00edguez, t\u00e9cnico de apoio \u00e1 investigaci\u00f3n do grupo SiDOR, ocupouse da parte administrativa.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00c9 unha ferramenta estat\u00edstica para a an\u00e1lise e avaliaci\u00f3n de procedementos de clasificaci\u00f3n Medicina, intelixencia artificial ou econom\u00eda son algunhas das \u00e1reas nas que actualmente &hellip; <a class=\"excerpt_more\" href=\"https:\/\/sidor.uvigo.es\/en\/expertos-nacionais-e-internacionais-intercambian-en-vigo-ideas-e-avances-sobre-as-curvas-roc\/\">Continued<\/a><\/p>\n","protected":false},"author":4,"featured_media":12079,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[93,134],"tags":[],"class_list":["post-12078","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-duvi-en","category-workshops-2-2"],"jetpack_featured_media_url":"https:\/\/sidor.uvigo.es\/wp-content\/uploads\/2025\/01\/roc4_0.jpg","_links":{"self":[{"href":"https:\/\/sidor.uvigo.es\/en\/wp-json\/wp\/v2\/posts\/12078\/"}],"collection":[{"href":"https:\/\/sidor.uvigo.es\/en\/wp-json\/wp\/v2\/posts\/"}],"about":[{"href":"https:\/\/sidor.uvigo.es\/en\/wp-json\/wp\/v2\/types\/post\/"}],"author":[{"embeddable":true,"href":"https:\/\/sidor.uvigo.es\/en\/wp-json\/wp\/v2\/users\/4\/"}],"replies":[{"embeddable":true,"href":"https:\/\/sidor.uvigo.es\/en\/wp-json\/wp\/v2\/comments\/?post=12078"}],"version-history":[{"count":4,"href":"https:\/\/sidor.uvigo.es\/en\/wp-json\/wp\/v2\/posts\/12078\/revisions\/"}],"predecessor-version":[{"id":12094,"href":"https:\/\/sidor.uvigo.es\/en\/wp-json\/wp\/v2\/posts\/12078\/revisions\/12094\/"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sidor.uvigo.es\/en\/wp-json\/wp\/v2\/media\/12079\/"}],"wp:attachment":[{"href":"https:\/\/sidor.uvigo.es\/en\/wp-json\/wp\/v2\/media\/?parent=12078"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sidor.uvigo.es\/en\/wp-json\/wp\/v2\/categories\/?post=12078"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sidor.uvigo.es\/en\/wp-json\/wp\/v2\/tags\/?post=12078"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}