Critically reviews the different types of abstractions and implementations in the area of hypertext and proposes the existence of three types of hypertext: small, medium, and large volume. Each type of hypertext is described, human-computer interaction is considered, and a movement toward intelligent hypertext is discussed. (48 references) (LRW)

Describes techniques used for information retrieval from free-text or document databases and presents a new approach based on signature files, or representations of documents, called the Map Array Signature (MAS) method. False drops are discussed, and results of experiments are compared to Robert's Superimposed Coding method. (20 references) (LRW)

Investigates the presence of clustering structure in a document collection and the influence of the presence of clustering structure on the success of cluster-based retrieval. Term-weight and similarity thresholds are discussed, empirical and statistical significance are considered, and indexing exhaustivity for document representation is…

This brief review of the documentation activities of the United Nations Library at Geneva includes a general description, documentation activities (current bibliographic publications, specialized bibliographies and reference lists), catalog card service, major documents, indexing of official documents originating in the UN, technical tools used,…

Describes a conceptual model for bibliographic data called Maestro (Management Environment for Structured Text Retrieval and Organization) that is being developed both to support structured documents in databases, and to provide a query language to link information contained in these structures. Traditional text retrieval systems are discussed,…

Describes the development of a structural model of document retrieval based on lexical-semantic relationships between index terms. An algorithm that uses tree-to-tree distance to measure structural closeness between a document and a query statement is explained, and the proposed model is compared to a vector retrieval model. (18 references) (LRW)

Presents the "Evidence-of-Existence" information system in which the structure is developed, with application of cybernetic concepts, as an isomorphic model in analogy to the system structure of communication technology. Three criteria of structuring are postulated: (1) source-channel-sink, with input-output characteristics, (2) filter-type…

Discusses documentation and information in the social sciences in Austria, including the demand for information, information systems and information services, social research and main institutions of documentation and information, and a survey of institutions/organizations. (VT)

Assesses the present situation of information and documentation services in the social sciences in Belgium, including information and documentation on social science literature, research, and science data; services and technical tools used; existing international cooperation; and possibilities and areas of European collaboration. (VT)

Describes information and documentation in the social sciences (SSID) in Canada, and outlines SSID activities in literature, research, and data. SSID is characterized as highly dispersed, and underdeveloped, having few national foci, and no clear national center. (VT)

Briefly surveys social science documentation in Switzerland. (VT)

This brief description of the system of social science information in Yugoslavia includes size, scope, and publications. (VT)

Summary of a project for developing and testing standard systems and methods for cost accounting; establishing indices for the costs of activities; and developing approaches to and methods of determining the level of performance, efficiency, and usefulness of information and documentation systems. (Author/KP)

This issue contains nine articles that provide an overview of trends and research in parallel information retrieval. Topics discussed include network design for text searching; the Connection Machine System; PThomas, an adaptive information retrieval system on the Connection Machine; algorithms for document clustering; and system architecture for…

Discusses problems for information management in dealing with multilingual documentation. The planned language, Esperanto, is suggested as a universal working language because of its neutrality, rational structure, clarity, and expressive power. (Author/CWM)