The Information Retrieval Research Laboratory of the University of Illinois regularly calculates certain statistics associated with the MARC II data base. Statistics pertaining to data element occurrence, data element length, and distribution of records by Dewey Decimal division and Library of Congress class code are given. (Author)

The binary vector is suggested as an alternative to the usual method of storing document pointers in an inverted index file. (Author)

Presents a word-based technique for storing natural language text in compact form. The compressed text consists of a dictionary and a text that is a combination of actual running text and pointers to the dictionary. This technique has shown itself to be effective for both text storage and retrieval. (VT)

Variety-generator approach seeks to reflect the microstructure of data elements in their description for storage and search, and takes advantage of the consistency of statistical characteristics of data elements in homogeneous data bases. (Author)

A cost analysis of 411 on-line bibliographic search requests was conducted. The average cost was $28.41 exclusive of telephone line charges. (Author)

Creation of a quarterly keyword index to campus grant projects is the chief investigator's name as the key to a section of project summaries. A third section is also included, listing the summaries under the name of the sponsoring department. (Author)

Gives an overview of MEDLARS II as an example of a major bibliographic processing system that supports on-line access to a number of very large files, has efficient throughput, and is operated on a single large-scale computer. (Author/PF)

Proper name matching schemes are reviewed and an updated version of these schemes is tested on a suburban telephone book. (Author/AB)

An experiment in manipulating machine-readable library records for use in subject searching indicated that such programs would be useful to extend service outside a single library location. (Author/PF)

Examines design functions of present file organizations in the context of available data storage devices and identifies current developmental trends. (Author/RAA)

Provides an overview of videotex and teletext systems under development or being marketed in the United States and Europe. Current trends indicate a diminishing participation by librarians and information scientists in information display technology. Seven references are listed. (RAA)

Describes a user-interactive system for the selection and display of pictorial information stored on microfiche cards in a computer-controlled viewer. (Author)

Presents MARC database statistics for use in planning and processing files, selection of subsets, and estimating file growth rates. Statistics are provided on record length, field tag occurrence, data element length per field tag, and distribution of records by Dewey Decimal Division and Library of Congress class code. (Author/RAA)

Reports the results of a study performed to determine preferred and effective usage of search keys utilized by OCLC users. The study used the research library facilities of Ohio State University to examine information retrieval behavior for acquisitions and cataloging information. (RAA)