The results of an experiment in the use of statistical techniques for extracting a technical vocabulary from document texts are presented and discussed.
The paper introduces a new family of codes for detecting and correcting multiple errors in a binary-coded message. The message itself is arranged (conceptually) into a multidimensional rectangular array. The processes of encoding and error detection are based upon parity evaluations along prescribed dimensions of the array. Effectiveness of the codes is increased by introducing a "system check bit", which is essentially a parity check on the other parity bits. Only three-dimensional codes are discussed in this paper, with parity evaluations along the horizontal, the vertical, and one main diagonal. However, the family of codes is not restricted to three dimensions, as evidenced by the discussion by Minnick and Ashenhurst on a similar multidimensional single-bit selection plan used for another purpose [6]. A four-dimensional code, correcting three and detecting four errors, has been developed; the extension to higher-dimenslonal codes with greater correction power is straightforward.
EAS flGISD, A lANGUAGE FUM U*FG1K0l tyvl ¶FIRT CONSOLE Easy English is a natural comand language designed to simplify comeinication between mn and machine through a remot typewriter ccnsole. Xt is made up of readily recognized suntences of the English 1•aguage. sentences which any layman might be expected to use in everyday requests for services or articles frca a familiar source. Easy English has been developed as a comand language for retritval of documnts from a computerized data base, specifically from the Moore School Information Systems Laboratory (IBISL) files. it is intented for all information retrieval systems using remote typewriter consoles in a conversational mode.
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