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Dettagli Bibliografici
Autore principale:	Paula A. Rodríguez
Natura:	Artículo científico
Lingua:	es
Pubblicazione:	Centro de Información Tecnológica 2016
Soggetti:	Ingeniería perfiles de usuario objetos de aprendizaje Recomendación adaptativa método híbrido de recomendación
Accesso online:	https://www.redalyc.org/articulo.oa?id=373546601010
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Sommario:

Método Híbrido de Recomendación Adaptativa de Objetos de Aprendizaje basado en Perfiles de Usuario Paula A. Rodríguez Néstor D. Duque Demetrio A. Ovalle Ingeniería perfiles de usuario objetos de aprendizaje Recomendación adaptativa método híbrido de recomendación El objetivo de este artículo es proponer un método híbrido de recomendación adaptativa de objetos de aprendizaje, el cual debe inicialmente realizar la selección de características del perfil del estudiante que mejor lo definan. Los sistemas de recomendación híbrida de materiales educativos digitales apoyan procesos de aprendizaje virtual y ayudan a los estudiantes a encontrar recursos relevantes que se adapten a sus necesidades y preferencias. Se seleccionan los algoritmos de recomendación que se van a aplicar, seguido de la elección en la combinación de los resultados de esas técnicas. Finalmente, se evalúa la integración de técnicas teniendo en cuenta la relevancia que se obtiene de las recomendaciones. Se puede concluir que al utilizar sistemas adaptativos de recomendación híbrida se mejoran los resultados, especialmente cuando la combinación incluye la técnica de filtrado por conocimiento. 2016 artículo científico 0718-5006 https://www.redalyc.org/articulo.oa?id=373546601010 es http://www.redalyc.org/revista.oa?id=3735 Formación Universitaria application/pdf Centro de Información Tecnológica Formación Universitaria (Chile) Num.4 Vol.9

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// 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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Environment & details:

Environment & details: