ITAL Information Technology and Libraries (E-Journal)
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The Library of Congress View on Its Relation to the ALA MARC Advisory Committee
Get PDFThis paper is a statement of the Library of Congress' recommendation that a MARC advisory committee be appointed within the present structure of the RTSD/ISAD/RASD Committee on Representation in Machine-Readable Form of Bibliographic Information (MARBI) and describes the Library's proposed relation to such a committee. The proposals and recommendations suggested were adopted by the MARBI Committee during its deliberations at ALA Midwinter, January 1974, and are now in effect
Automatic Format Recognition of MARC Bibliographic Elements: A Review and Projection
Get PDFA review and discussion of the technique of automatic format recognition (AFR) of bibliographic data are presented. A comparison is made of the record-building facilities of the Library of Congress, the University of California (both AFR techniques), and the Ohio College Library Center (non-AFR). A projection of a next logical generation is described
Highlights of ISAD Board Meeting
Get PDFHighlights of Information Science and Automation Division Board Meeting, 1974 ALA Midwinter Meeting, Chicago
A Simulation Model for Purchasing Duplicate Copies in a Library
Get PDFProvision of duplicate copies in a library requires knowledge of the demand for each title. Since direct measurement of demand is difficult a simulation model has been developed to estimate the demand for a book from the number of times it has been loaned and hence to determine the number of copies required. Special attention has been given to accurate calibration of the model
MARCIVE: A Cooperative Automated Library System
Get PDFThe MARCIVE Library System is a batch computer system utilizing both the MARC tapes and local cataloging to provide catalog cal'ds, book catalogs, and selective bibliographies for five academic libraries in San Antonio, Texas. The development of the system is traced and present procedures are described.
Batch retrieval from the MARC 1·ecords plus the modification of these records costs less than twenty cents per title. Computer costs for retrieval, modification, and card production average sixty-six cents per title, between seven and ten cents per card. The attributes and limitations of the MARCIVE system are compared with those of the OCLC system
Application of the Variety-Generator Approach to Searches of Personal Names in Bibliographic Data Bases--Part 2. Optimization of Key-Sets, and Evaluation of Their Retrieval Efficiency
Get PDFKeys consisting of variable-length chamcter strings from the front and rear of surnames, derived by analysis of author names in a particular data base, am used to provide approximate representations of author names. When combined in appropriate ratios, and used together with keys for each of the first two initials of personal names, they provide a high degree of discrimination in search.
Methods for optimization of key-sets are described, and the performance of key-sets varying in size between 150 and 300 is determined at file sizes of up to 50,000 name entries. The effects of varying the proportions of the queries present in the file are also examined. The results obtained with fixed-length keys are compared with those for variable-length keys, showing the latter to be greatly superior.
Implications of the work for a variety of types of information systems are discussed
