The program is a general purpose information retrieval program which can be used with a file of fixed format documents. Designed to be used by noncomputer personnel, the program provides flexibility in search requests and output format, which enable it to satisfy users' requests for information promptly and inexpensively. To insure easy adaptation…

The direct-chaining technique of hash coding is generalized in a manner that is useful for storing records on the basis of non-unique search keys. Two hash functions are used, a process implying a tree structure. Two models, one involving unique and the other non-unique keys, are presented. (7 references) (Author/KE)

This report discusses an experimental inquiry into the nature and use of context data. The objective is to explore the implications of a system incorporating context data and, ultimately, to test the utility of context data for meeting the needs of users of information systems. The result of this inquiry has been the establishment of a context…

The Cambridge Crystallographic Data Centre is concerned with the retrieval, evaluation, synthesis, and dissemination of structural data obtained by diffraction methods. This paper describes the use of a computer-based file system of both bibliographic information and numeric data to produce a compendium of interatomic distances. (10 references)…

A new, universally applicable computer program is described for the whole complex of punched card oriented literature documentation. Its characteristics are: modular construction, therefore easily adapted to user-specific problems; extremely high searching capacity; comprehensive and elastic syntax makes possible new unconventional methods of…

WISE is an on-line, interactive information retrieval system designed to operate on key-word-oriented data bases. The WISE user searches a data base by entering and combining key-words that are appropriate to the data base and the subject matter. The user also enters certain command statements to enhance the results of the search and to control…

The General Information Processing System (GIPSY) of the Merrick Computing Center is a user dominated system. It can be used to manipulate and retrieve both numeric and alphabetic material. One of its most interesting uses is in the selection and retrieval of records and documents or of selected entries from records and documents. It has been used…

The existing volume and increasing growth rate of documented information has resulted in numerous efforts to construct operational Document Storage and Retrieval Systems, as a practical solution to the demand for information storage and retrieval. Accompanying the surge to build more and better and bigger Document Retrieval Systems (DRSs), was the…

Analyzes recent developments in the problem of processing queries expressed as Boolean expressions, shows that the concept of threshold values resolves the problems inherent with relevance weights, and explores possible evaluation mechanisms for document retrieval based on fuzzy set theory. Sixteen references are listed. (FM)

Distance education created new challenges regarding the delivery of large size isochronous continuous streaming media (SM) objects. In this paper, we consider the design of a framework for customized SM presentations, where each presentation consists of a number of SM objects that should be retrieved and displayed to the user in a coherent…

This report presents the principal objectives and results of the Context Information Processing Project and discusses the nature of context and its relationship to conventional models of information storage and retrieval. In this approach literature searching involves prediction, and context represents a new class of clues to be obtained and…

This report, resulting from the Context Information Processing Project, is a review of request language and search logic in its present state with the purpose of relating these findings to the design of QUERY (the language described in LI 001 652) and to context information processing needs. A basic assumption is that an information retrieval…

Describes a systematic approach to the design of fixed-length, derived, truncated search keys for corporate author records; and a statistical method for predicting the performance of search keys for files of arbitrary size. (VT)

Problems encountered in converting a card-oriented biological data information system to new computer equipment are discussed. Data formats, input-output procedures, search strategies, etc., are described. (5 references) (Author/SJ)

WISE is an on-line interactive information retrieval system designed to operate on keyword oriented data bases. The system was designed particularly with bibliographic data bases in mind, but it is potentially useful for any keyword oriented data base. The WISE user searches a data base by entering and combining keywords that are appropriate to…