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Bibliographic Details
Main Author:	Anita Ferreira
Format:	Artículo científico
Language:	en
Published:	Universidad de Tarapacá 1998
Subjects:	Ingeniería
Online Access:	https://www.redalyc.org/articulo.oa?id=11400508
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Un Modelo de Agente de Búsqueda y Filtrado de Información Inteligente Apoyado por Interacciones en Lenguaje Natural Anita Ferreira John A. Atkinson Abutridy Ingeniería This paper presents a model and its design and implementation issues needed to create intelligent agents forinformation searching and filtering. It is done in order to decrease the information overload which users are exposedto.The modelo is based on a proposal of a computational linguistics model for generating interactive dialog discoursesbetween user and system. A computational linguistics processing of those discourse dialogs is used as input streams forthe agent to carry out the retrieval/searching and filtering tasks on electronic documents.A system implemented by using this approach is shown. In addition, some results got from different real experiments are discussed too. 1998 artículo científico 0717-1072 https://www.redalyc.org/articulo.oa?id=11400508 en http://www.redalyc.org/revista.oa?id=114 Revista Facultad de Ingeniería application/pdf Universidad de Tarapacá Revista Facultad de Ingeniería (Chile) Num.5

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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