The logical structure of the data bank is described from the user's point of view, without reference to machine implementation. The length of files, records, segments, and fields are variable and unlimited; duplication factors are unlimited; sequence of files, records within file, and segments within record are random. All data are subject to…

A relational data system (RDS) is one that has the capability not only to retrieve specific facts but also the ability to deduce facts that are implicit rather than explicit in the data base. The study investigated the application of RDS technology to intelligence data processing. RDS technology and the nature of intelligence data processing are…

The twenty-second in a series, this report describes research in information organization and retrieval conducted by the Department of Computer Science at Cornell University. The report covers work carried out during the period summer 1972 through summer 1974 and is divided into four parts: indexing theory, automatic content analysis, feedback…

This paper serves as an introduction to a group of papers produced by the Classroom Interaction Project of the Center for Research in Social Behavior at the University of Missouri in Columbia. This project has been chiefly concerned with ascertaining if black-ghetto and white-suburban classrooms use language differently and, if so, in what ways.…