An Interactive Document Retrieval System
Dewey E. Carroll, Robert Tien-Wen Chien, K.C. Kelley, F. P. Preparata, P. T. Reynolds · Illinois Digital Environment for Access to Learning and Scholarship (University of Illinois at Urbana-Champaign) · 1968
In this paper the REQUEST document retrieval system is described.Included is a description of the data base, the interactive mode, the modular implementation in ISL--a string manipulating language, and the multiple-level Boolean hierarchy query format.