Editorial
A Network of Networks (p.115)
WILLIAM D. MATHEWS
Feature Articles
Bibliographic Service Development: A New CLR Program (p.116-124)
C. LEE JONES AND NANCY GWINN
The Council on Library Resources has announced a new Bibliographic Service Development Program that will work toward the provision of effective bibliographic services for all who need them, the improvement of bibliographic products, and the purposeful control of costs of bibliographic processes in individual libraries. Initial thrusts of the $5-million, five-year program include an exploration of the feasibility of linking the various bibliographic utilities, networks, consortia, and libraries that produce and manipulate bibliographic records; a review of the nationwide data-base design project of the Library of Congress's Network Development Office; and an assessment of work toward the development of relevant standards.
Automatic Detection of Duplicate Monographic Records (p.125-142)
THOMAS B. HICKEY AND DAVID J. RYPKA
As computer interaction between libraries becomes a reality, identification of bibliographic records representing the same item or similar items has presented problems. The purpose of this study was to develop an improved algorithm for the automatic detection of duplicate monographic records in large on-line systems. The resultant algorithm uses a variable-length key averaging fifty-two bytes per bibliographic record and is capable of both retrospective and on-line operation. Large-scale tests on the OCLC On-Line Union Catalog indicated that nearly 5 percent of the monographic records can be identified as duplicates and eliminated.
Automatic Merging of Monographic Data Bases - Use of Fixed-Length Keys Derived from Title Strings (p.143-155)
KEITH D. MACLAURY
To find duplicate records in machine-readable bibliographic files, two different fixed-length keys were developed for finding matching titles. Each had different characteristics and functions. An optimized character position key was developed for comparing all titles in the files and a Harrison bit string key, tolerant of typographic errors and other small differences, was used for comparing titles within small groups of records that were potential matches.
Automatic Merging of Monographic Data Bases - Identification of Duplicate Records in Multiple Files: The IUCS Scheme (p.156-168)
MARTHA E. WILLIAMS AND KEITH D. MACLAURY
A research project entitled "A State-wide Union Catalog Feasibility Study" was funded by the Illinois State Library and carried out within the Information Retrieval Research Laboratory (IRRL) of the Coordinated Science Laboratory (CSL) at the University of Illinois in Urbana-Champaign. The purpose of the project was to develop a machine algorithm for locating and pairing duplicate records in machine-readable bibliographic files in order to eliminate duplicates and permit files from different libraries to be used for creation of a union catalog of machine-readable bibliographic records. A prototype system called IUCS was developed and tested on sample files from OCLC, Northwestern University, and the University of Chicago.
Communications
Maximum and Minimum Derived Search Key Use and Its Relationship with Found and Not-Found System Responses (p.169-174)
KUNJ B. RASTOGI
(no abstract available)
Adoptability Criteria for Information Systems (p.174-178)
A. NEIL YERKEY
(no abstract available)
Selection of Bibliographic Data Bases: Reasons for Examining the Design Elements of Various Bibliographic Systems before Adopting One (p.178-179)
MARTHA BOAZ
(no abstract available)