This report delineates the theory and terminology of data compression. It surveys four data compression methods--null suppression, pattern substitution, statistical encoding, and telemetry compression--and relates them to a standard statistical coding problem, i.e., the noiseless coding problem. The well defined solution to that problem can serve…

The MARC Pilot Project was an experiment conducted by the Library of Congress, in cooperation with 16 participating libraries, to determine the feasibility of putting cataloging data into machine-readable from for distribution of magnetic tapes. MARC (Machine Readable Cataloging) records were distributed for some 16,000 titles in the pilot phase…

Technical and financial assessments were conducted of the Draft EUDISED Program 1976-78, which is to coordinate information exchange activities in educational documentation and information on a European level. Facilities and staff for various technical and organizational alternatives are described, costs of each alternative are estimated, and…