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| Information Retrieval | 8 |
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Humphrey, Susanne M. – Information Storage and Retrieval, 1975
Compares the ELHILL 2 and STAIRS programs with respect to on-line searching of the MEDLARS citation file by means of a chart showing the capabilities of the two programs. (Author/PF)
Descriptors: Computer Programs, Information Retrieval, Online Systems
Schuegraf, E. J. – Information Storage and Retrieval, 1973
The design of programs to search large document data bases is discussed with regard to the use of compression coding combined with adoption of word fragments as the basic language elements. An algorithm is described for determination of a set of almost equifrequent fragments. Its efficiency is tested. (23 references) (Author)
Descriptors: Algorithms, Computer Programs, Information Retrieval, Information Storage
Mittman, Benjamin; Dominick, Wayne D. – Information Storage and Retrieval, 1973
A little understood aspect of implementing on-line software is the problem of effective monitoring. Northwestern University has developed techniques to monitor an on-line information retrieval system, by using that system both to monitor itself and to process the data collected. The Remote Information Query System is a batch and on-line…
Descriptors: Computer Programs, Evaluation, Information Retrieval, Information Systems
And Others; Byrne, J. G. – Information Storage and Retrieval, 1972
The paper describes TSAR, a current awareness or SDI system which has been developed for processing MARC records in general, but is particularly concerned with the INSPEC service. Some statistics on the frequency of occurrence of words and comments on data compression conclude the paper. (7 references) (Author/SJ)
Descriptors: Computer Programs, Data Processing, Databases, Information Retrieval
Thiel, L. H.; Heaps, H. S. – Information Storage and Retrieval, 1972
Retrospective search of large data bases requires development of special techniques for automatic compression of data and minimization of the number of input-output operations to the computer files. The computer program should require a relatively small amount of internal memory. This paper describes the structure of such a program. (9 references)…
Descriptors: Computer Programs, Computers, Information Retrieval, Information Storage
Fendrych, Miroslav; Fogl, Ing. Jiri – Information Storage and Retrieval, 1971
Discussed is the Czechoslovak program of State Information Policy which aims at the construction of a unified, integrated national system of scientific, technological and economic information. (Author/SJ)
Descriptors: Automation, Computer Programs, Data Processing, Economics
Polton, D. J. – Information Storage and Retrieval, 1972
Computer programs have been written which enable substructure searches to be carried out on a file of compounds ciphered using a modified version of the IUPAC (Dyson) notation. The search system outlined is to be linked with one which uses input from the chemical structure typewriter. (3 references) (Author)
Descriptors: Chemical Bonding, Chemical Industry, Chemistry, Computer Programs
And Others; Prywes, Noah S. – Information Storage and Retrieval, 1974
Reports on a series of programs that have been developed to process data bases, consisting of textual items, and to index and arrange (classify) the data items in accordance with an automatically generated classification system. (Author)
Descriptors: Automatic Indexing, Automation, Classification, Computer Programs
