Reference Question Analysis and Search Strategy Development by Man and Machine

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Author:	Jahoda, Gerald
Format:	Recurso educativo Open Access
Language:	en
Published:	1974
Subjects:	Information Retrieval Information Seeking Library Automation Library Services Man Machine Systems Reference Services Search Strategies
Online Access:	Acceder al recurso
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_version_	1867181158814449665
author	Jahoda, Gerald
author_facet	Jahoda, Gerald Jahoda, Gerald
collection	Education Resources Information Center
contents	Reference Question Analysis and Search Strategy Development by Man and Machine Jahoda, Gerald Information Retrieval Information Seeking Library Automation Library Services Man Machine Systems Reference Services Search Strategies Question analysis and search strategy development were broken down into nine steps for answering reference questions. These steps were examined for possible mechanization of the answering process. Such automation was not proved feasible. (LS)
format	Recurso educativo Open Access
id	eric_EJ101191
institution	ERIC Institute of Education Sciences
language	en
publishDate	1974
record_format	eric
spellingShingle	Reference Question Analysis and Search Strategy Development by Man and Machine Jahoda, Gerald Information Retrieval Information Seeking Library Automation Library Services Man Machine Systems Reference Services Search Strategies Reference Question Analysis and Search Strategy Development by Man and Machine Jahoda, Gerald Information Retrieval Information Seeking Library Automation Library Services Man Machine Systems Reference Services Search Strategies Question analysis and search strategy development were broken down into nine steps for answering reference questions. These steps were examined for possible mechanization of the answering process. Such automation was not proved feasible. (LS)
title	Reference Question Analysis and Search Strategy Development by Man and Machine
topic	Information Retrieval Information Seeking Library Automation Library Services Man Machine Systems Reference Services Search Strategies
url	https://eric.ed.gov/?id=EJ101191

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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