A mathematical model is used to justify having the Library of Congress do as much as possible of all the original cataloging for U.S. libraries. It is suggested that the potential savings due to decreased duplication of effort by local libraries could easily justify the use of a computer system at LC. (Author/JB)

Describes the recall precision trade-off in information retrieval as the deceleration in the proportion of relevant documents retrieved over time. Several mathematical functions sharing this property are examined and it is concluded that the equation that best models recall as a function of time is the logarithm of a quadratic equation. (21…

Explores potential of mathematical theory of communication for information science and examines question of how to encode a message at time it is encountered for subsequent recall. Examples of problem, a prototype computer program and experiment, coding as embedding in associational nets, and nature of information are discussed. (Nine references.)…

This paper is an explication of the concept of a network of consultants to help people obtain answers to day-to-day questions for which answers are known. Each member of such a network is viewed to have three capabilities: 1)answering questions directly from his own memory, 2)answering questions with the aid of library resources, and 3)referring…