Un frailty gamma en supervivencia bivariante

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Bibliographic Details
Main Author:	Esteban Navarrete Álvarez
Format:	Artículo científico
Language:	es
Published:	Universidad Nacional de Colombia 2004
Subjects:	Física, Astronomía y Matemáticas Weibull estimación covariación Supervivencia bivariante
Online Access:	Acceder al recurso
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author	Esteban Navarrete Álvarez
author_facet	Esteban Navarrete Álvarez
contents	Un frailty gamma en supervivencia bivariante Esteban Navarrete Álvarez Física, Astronomía y Matemáticas Weibull estimación covariación Supervivencia bivariante Consideramos un modelo de supervivencia bivariante basado en la presencia de una covariable aleatoria no observada, frailty, que induce dependencia entre los tiempos de fallo y actúa bajo hipótesis de riesgo proporcional. Consideramos una distribución gamma para el frailty y distribuciones marginales Weibull e introducimos covariables explicativas, que actúan bajo hipótesis de vida acelerada. Introducimos además covariables en el parámetro de asociación. 2004 artículo científico 0120-1751 https://www.redalyc.org/articulo.oa?id=89927203 es http://www.redalyc.org/revista.oa?id=899 Revista Colombiana de Estadística application/pdf Universidad Nacional de Colombia Revista Colombiana de Estadística (Colombia) Num.2 Vol.27
format	Artículo científico
id	redalyc_89927203
institution	Redalyc
language	es
publishDate	2004
publisher	Universidad Nacional de Colombia
spellingShingle	Un frailty gamma en supervivencia bivariante Esteban Navarrete Álvarez Física, Astronomía y Matemáticas Weibull estimación covariación Supervivencia bivariante Un frailty gamma en supervivencia bivariante Esteban Navarrete Álvarez Física, Astronomía y Matemáticas Weibull estimación covariación Supervivencia bivariante Consideramos un modelo de supervivencia bivariante basado en la presencia de una covariable aleatoria no observada, frailty, que induce dependencia entre los tiempos de fallo y actúa bajo hipótesis de riesgo proporcional. Consideramos una distribución gamma para el frailty y distribuciones marginales Weibull e introducimos covariables explicativas, que actúan bajo hipótesis de vida acelerada. Introducimos además covariables en el parámetro de asociación. 2004 artículo científico 0120-1751 https://www.redalyc.org/articulo.oa?id=89927203 es http://www.redalyc.org/revista.oa?id=899 Revista Colombiana de Estadística application/pdf Universidad Nacional de Colombia Revista Colombiana de Estadística (Colombia) Num.2 Vol.27
title	Un frailty gamma en supervivencia bivariante
topic	Física, Astronomía y Matemáticas Weibull estimación covariación Supervivencia bivariante
url	https://www.redalyc.org/articulo.oa?id=89927203

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// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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