Duplicate Detection and Record Consolidation in Large Bibliographic Databases: The COPAC Database Experience.

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Main Author:	Cousins, Shirley Anne
Format:	Recurso educativo Open Access
Language:	en
Published:	1998
Subjects:	Academic Libraries Access to Information Foreign Countries Higher Education Information Storage Library Technical Processes Online Catalogs Online Systems Records Management Research Libraries Union Catalogs
Online Access:	Acceder al recurso
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Remote Electronic Resources and the OPAC: Illustrated by the Unisa Library Experience.
by: Van der Merwe, Ina, et al.
Published: (1998)

Network-Accessible Resources and the Redefinition of Technical Services.
by: Jones, Neil
Published: (1998)

Online Catalog Development at the University of Guelph.
by: Beckman, Margaret
Published: (1987)

Accessing On-line Bibliographic Databases. Revised.
by: Barron, Billy
Published: (1992)

Computer Cataloging of Electronic Journals in Unstable Aggregator Databases: The Hong Kong Baptist University Library Experience.
by: Li, Yiu-On, et al.
Published: (2001)

Classification and Shelflisting as Value Added: Some Remarks on the Relative Worth and Price of Predictability, Serendipity, and Depth of Access.
by: LeBlanc, Jim
Published: (1995)

From Access Points to Materials: A Transaction Log Analysis of Access Point Value for Online Catalog Users.
by: Wyly, Brendan J.
Published: (1996)

A Guide to Special Collections in the OCLC Database.
by: Schieber, Philip, Ed., et al.
Published: (1988)

OPAC Missing Record Retrieval.
by: Johnson, Karl E.
Published: (1996)

Library Applications of a Wide Area Network: Promoting JANET to UK Academic Libraries.
by: MacColl, John A.
Published: (1990)

The Basis for a Record in Major Cataloguing Codes and the Relation to FRBR.
by: Jonsson, Gunilla
Published: (2002)

What Do Libraries Really Do with Electronic Resources? The Practice in 2003
by: Shorten, Jay
Published: (2005)

The National Library of Canada's Digital Library Initiatives.
by: Hodges, Doug, et al.
Published: (1999)

Online Help to End-Users in a Networked Environment.
by: Meyer, Paul
Published: (1991)

Automated Cataloguing and Retrospective Conversion in the University Libraries of Spain.
by: Ortiz-Repiso, Virginia, et al.
Published: (1994)

Increasing Access to Archival Records in Library Online Public Access Catalogs.
by: Gilmore, Matthew B.
Published: (1988)

Rebooting the East: Automation in University Libraries of the Former German Democratic Republic.
by: Seadle, Michael
Published: (1996)

MARC Online: Immediate Access to Cataloguing Copy through the DOBIS Bibliographic Pool.
by: Pearce, Linda, et al.
Published: (1988)

Standard for University of California Union Catalog Input Records; Standard for Brief Machine-Readable Bibliographic Records for University of California Libraries; [and] Record Format for the MELVYL Catalog. Technical Reports Nos. 1-3.
Published: (1990)

Library Automation in the Republic of China: Practical Aspects and Perspectives.
by: Li, Tze-chung
Published: (1991)

Library Processing Systems and the Man/Machine Interface.
by: Highsmith, Anne L.
Published: (1986)

A Web Database To Manage and Organize ANSI Standards Collections.
by: Matylonek, John C., et al.
Published: (2001)

Use of Z39.50 To Access Distributed Union Catalogues. Discussion Paper.
by: Zeeman, J., et al.
Published: (1997)

Perceptions of Cataloguers and End-Users towards Bilingual Authority Files.
by: Abdoulaye, Kaba
Published: (2002)

Integrating Electronic Resources into the Library Catalog: A Collaborative Approach.
by: Herrera, Gail, et al.
Published: (2001)

Creating Bibliographic and Cataloging Standards and Developing Cooperation in Polish Academic Libraries after the Implementation of VTLS.
by: Sroka, Marek
Published: (1997)

Visual Access to Visual Images: The UC Berkeley Image Database Project.
by: Besser, Howard
Published: (1990)

Symphony: SirsiDynix's Flagship Integrated Library System--A Horizon User's Perspective
by: Khurshid, Zahiruddin, et al.
Published: (2009)

Working Together, Learning Together: The Consortium of Academic Libraries of Catalonia.
by: Anglada, Lluis M.
Published: (1999)

Academic Libraries: Reaching Up and Stretching Out. Proceedings of the Spring Meeting of the Nebraska Library Association, College and University Section (Crete, Nebraska, May 25, 1990).
by: Giesecke, Joan, Ed.
Published: (1990)

Rules for Merging MELVYL Records. Technical Report No. 6. Revised.
by: Coyle, Karen
Published: (1992)

Filing, Filtering, and the First Few Found.
by: Buckland, Michael K., et al.
Published: (1993)

A Modest Proposal: No More Main Entry.
by: Bierbaum, Esther Green
Published: (1994)

Is the OCLC Database Too Large? A Study of the Effect of Duplicate Records in the OCLC System.
by: Wanninger, Patricia Dwyer
Published: (1982)

SHARAF: The Canadian Shared Authority File Project.
by: MacIntosh, Helen
Published: (1982)

Neural Networks for Language Identification: A Comparative Study.
by: MacNamara, Shane, et al.
Published: (1998)

Tables of Contents in Library Catalogs: A Quantitative Examination of Analytic Catalogs.
by: Poulsen, Claus
Published: (1996)

An Experiment in Outsourcing at the College of Charleston Libraries.
by: Bielsky, Katherine
Published: (1997)

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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FlashMessenger	Laminas\Stdlib\ArrayObject {#1455}
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VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
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HTTP_ACCEPT	"/"
HTTP_USER_AGENT	"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
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SERVER_SOFTWARE	"Apache/2.4.66 (Ubuntu)"
SERVER_NAME	"info.umar.mx"
SERVER_ADDR	"200.23.222.19"
SERVER_PORT	"443"
REMOTE_ADDR	"216.73.216.61"
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REQUEST_SCHEME	"https"
CONTEXT_PREFIX	""
CONTEXT_DOCUMENT_ROOT	"/usr/local/vufind/public"
SERVER_ADMIN	"admin@localhost"
SCRIPT_FILENAME	"/usr/local/vufind/public/index.php"
REMOTE_PORT	"56600"
REDIRECT_URL	"/Record/eric_EJ573940/Similar"
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SERVER_PROTOCOL	"HTTP/1.1"
REQUEST_METHOD	"GET"
QUERY_STRING	""
REQUEST_URI	"/Record/eric_EJ573940/Similar"
SCRIPT_NAME	"/index.php"
PHP_SELF	"/index.php"
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REQUEST_TIME	1789442001

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SessionHelper	Laminas\Stdlib\ArrayObject {#1782}

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REDIRECT_HTTPS	"on"
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REDIRECT_STATUS	"200"
VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
HTTPS	"on"
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HTTP_ACCEPT	"/"
HTTP_USER_AGENT	"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
HTTP_COOKIE	"language=en; ui=standard; VUFIND_SESSION=077550b1a7deeffcc2285d1a1d703ef6"
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PATH	"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/snap/bin"
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SERVER_PORT	"443"
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SERVER_ADMIN	"admin@localhost"
SCRIPT_FILENAME	"/usr/local/vufind/public/index.php"
REMOTE_PORT	"56600"
REDIRECT_URL	"/Record/eric_EJ573940/Similar"
GATEWAY_INTERFACE	"CGI/1.1"
SERVER_PROTOCOL	"HTTP/1.1"
REQUEST_METHOD	"GET"
QUERY_STRING	""
REQUEST_URI	"/Record/eric_EJ573940/Similar"
SCRIPT_NAME	"/index.php"
PHP_SELF	"/index.php"
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REQUEST_TIME	1789442001

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Registered Handlers

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