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Reardon, Bernard C. – Information Storage and Retrieval, 1974
The Retrieval of information by means of freely-chosen descriptors may be handled efficiently by creating an inverted file organization in an adaptive manner, entries in this file being generated by sequential searching of the master file, when required. (Author)
Descriptors: Databases, Information Retrieval, Information Storage, Search Strategies
Giroux, Pierre; Khadem, Riaz – Information Storage and Retrieval, 1973
An English summary is provided for this French article which describes the first stage of a research project using the Bose, Ghosh and Abraham theory with attributes of multiple values applied to a file containing a large number (10 6) of records. (7 references) (Author/SJ)
Descriptors: Databases, Information Processing, Information Retrieval, Information Storage
Lynch, Michael F. – Information Storage and Retrieval, 1973
Substantial degrees of compression of bibliographical data bases result from the application to them of a modified form of run-length coding. (14 references) (Author)
Descriptors: Citations (References), Databases, Information Retrieval, Information Storage
Laus, Krystyna; Dabrowski, Miroslaw – Information Storage and Retrieval, 1974
Presents a model information retrieval system for the case when a hierarchic set of descriptors is defined. (Author/PF)
Descriptors: Information Retrieval, Information Storage, Models, Subject Index Terms
Farradane, J.; And Others – Information Storage and Retrieval, 1973
The use of a structured system of storing information, particularly relational indexing, can lead to situations in which items would not be retrieved due to technicalities of the system. To overcome such problems a study was made of condensations with the aim of providing a series of rules to apply. (4 references) (Author/SJ)
Descriptors: Indexing, Information Retrieval, Information Storage, Relevance (Information Retrieval)
Stanfel, Larry E. – Information Storage and Retrieval, 1973
A review is given of doubly-chained trees for information retrieval. It is shown that the chaining steps may be of different cost depending upon whether the step is vertical or horizontal. The problem of constructing an optimal retrieval tree is formulated mathematically and a solution procedure given. (5 references) (Author/KE)
Descriptors: Decision Making, Information Retrieval, Information Storage, Mathematical Models
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
Corning, Mary E. – Information Storage and Retrieval, 1972
The National Library of Medicine has eight international MEDLARS quid-pro-quo arrangements with the United Kingdom, Sweden, France, West Germany, Japan, Australia, Canada and the World Health Organization. Policy aspects of these arrangements are discussed as well as the organizational and operational characteristics of the non-U.S. Medlars…
Descriptors: Information Retrieval, Information Services, Information Storage, Information Systems
Negus, A. E.; Hall, J. L. – Information Storage and Retrieval, 1971
Descriptors: Computers, Cost Effectiveness, Costs, Information Retrieval
Williams, Martha E. – Information Storage and Retrieval, 1972
Descriptors: Computers, Information Centers, Information Retrieval, Information Storage
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
Rettenmayer, John W. – Information Storage and Retrieval, 1972
This study proposes and investigates file ordering and retrieval techniques which, it is hypothesized, will: (a) reduce the average cost of retrieving records which satisfy a query, and (b) increase the rate of retrieval in the initial portion of the response period. (8 references) (Author)
Descriptors: Cluster Grouping, Cost Effectiveness, Databases, Information Retrieval
Hansen, Inge Berg – Information Storage and Retrieval, 1973
A retrospective test search on one year of CA Condensates was carried out in order to calculate the costs per profile and to get an impression of how CA Condensates would suffice as a database for retrospective use. (11 references) (Author)
Descriptors: Cost Effectiveness, Information Retrieval, Information Storage, Information Systems
Kelly, J. R.; Popper, P. – Information Storage and Retrieval, 1971
Described is International Nickel's Technical Information System which involves cooperation between the London and New York offices. The problems of coordination, selection, vocabulary control, computer compatibility, communication and security are discussed. (4 references) (SJ)
Descriptors: Agency Cooperation, Automatic Indexing, Cooperative Programs, Costs
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
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