An Introduction to Information Retrieval.

Fuente: ERIC Institute of Education Sciences

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Bibliographic Details
Format:	Recurso educativo Open Access
Language:	en
Published:	1971
Subjects:	Automation Computer Programs Data Processing Databases Digital Computers Guides Indexing Information Retrieval Information Storage Information Systems Libraries Library Automation Search Strategies
Online Access:	Acceder al recurso
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Reference Search System (REFSEARCH) Users' Manual. Final Report.
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Published: (1971)

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by: Bookstein, Abraham
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by: Long, Philip L.
Published: (1978)

Modern Subject Access in the Online Age.
by: Cochrane, Pauline A., et al.
Published: (1984)

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by: Cunningham, Jay L., et al.
Published: (1969)

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by: Salton, Gerard
Published: (1968)

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by: Chang, Roy
Published: (1993)

Research Toward Enhancing Retrieval Effectiveness.
by: Schipma, Peter B.
Published: (1976)

The Design and Early Use of an Information Retrieval System for a Growing Diversified Agribusiness Technical Community.
by: Beale, Joel A., et al.
Published: (1975)

Query Language and Search Strategy for Bibliographic Data Base Utilization.
by: Cadwallader, Gouverneur
Published: (1969)

A Design for an Online Bibliographic Database: The DOBIS-LIBIS Database.
by: McAllister, A. Stratton, et al.
Published: (1981)

A Guide to BALLOTS Network Services.
Published: (1976)

Guide to MEDLARS Services; A Brief Description of the System With Emphasis on the Automated Bibliographic Search Service. Revised.
Published: (1971)

TMS: A Terminal Monitor System for Information Processing. Final Report.
by: Smith, Stephen F., et al.
Published: (1971)

Mechanisation and Automation of Information Library Procedures in the USSR.
by: Batenko, A. I.
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Introducing UNDEX
by: Groesbeck, Joseph
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by: Gawaldo, Rich, et al.
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Handbook of Data Processing for Libraries.
by: Hayes, Robert M., et al.
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Indexing. ERIC Processing Manual, Section VII.
by: Houston, Jim, Ed.
Published: (1992)

Indexing. ERIC Processing Manual, Section VII.
by: Brandhorst, Ted, Ed., et al.
Published: (1980)

An Information Processing Laboratory for Education and Research in Library Science: Phase II. Final Report.
by: Maron, M. E., et al.
Published: (1971)

Online Subject Access--Enhancing the Library Catalog.
by: Mandel, Carol A., et al.
Published: (1983)

Center for Information Services, Phase II: Detailed System Design and Programming, Part 7 - Text Processing, Phase IIA Final Report.
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Trends in Information Handling in the United States.
by: Swanson, Rowena W.
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Project INTREX. Semiannual Activity Report, 15 March 1972 - 15 September 1972.
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Online Catalog Design Issues: A Series of Discussions. Report of a conference sponsored by the Council on Library Resources (Baltimore, Maryland, September 21-23, 1983).
by: Aveney, Brian, Ed.
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A Pilot - An On-Line Library Acquisition System.
by: Spigai, Frances, et al.
Published: (1968)

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Published: (1976)

A User's View of BALLOTS; Numbers 4, 5, 6, and 7. The PO/OC Module; The ACC/NPO Modules (A Supplement to No. 4); The SO Module (A Supplement to Nos, 4 and 5); the OP Module (A Supplement to Nos. 4, 5, and 6).
by: Logan, Timothy, et al.
Published: (1975)

Available Data Banks for Library and Information Services.
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A MULTIPLE TESTING OF THE ABC METHOD AND THE DEVELOPMENT OF A SECOND GENERATION MODEL. PART I, PRELIMINARY DISCUSSIONS OF METHODOLOGY. SUPPLEMENT, COMPUTER PROGRAMS OF THE HDL INFORMATION SYSTEMS.
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Libraries of the Future.
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Published: (1965)

Project Intrex. Semiannual Activity Report, 15 March 1970 to 15 September 1970.
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Published: (1969)

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by: Markuson, Barbara Evans, Ed.
Published: (1964)

SLICE/MARC-O Cataloging Data Search and Print Service: Users Manual. Second Edition.
Published: (1972)

The Use of Computers in Literature Searching and Related Reference Activities in Libraries. Proceedings of the 1975 Clinic on Library Applications of Data Processing (Champaign, Illinois, April 27-30, 1975).
by: Lancaster, F. Wilfrid, Ed.
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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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