Investigates the information representation power of different modalities in the video data in order to collect empirical evidence for video surrogate creation and thus better support effective video browsing and information retrieval. Three types of video surrogates were created and compared under two user tasks--verbal comprehension and visual…

Describes a study that investigated the cognitive processes undergraduates used to select information while using a virtual library, GALILEO (Georgia Library Learning Online). Discusses higher order thinking processes, relevance judging, evaluation (critical thinking), decision making, reasoning involving documents, relevance-related reasoning,…

The Excerpta Medica on-line test data base of 181,653 records was found to be supplementary to MEDLINE and TOXLINE but especially responsive to searches on drug products. (Author)

A model of word occurrences in documents is presented in the context of a model information system. (Author/PF)

A statistical description of a text retrieval system allows the derivation of a unique and measurable performance criterion that, in turn, may be used in discussing various parameters of systems performance. (Author/PF)

A specialized classification and information retrieval system is described. (PF)

A study of the coverage of a sample of the geochemical literature by major indexing and abstracting services showed a need for greater cooperation and coordination among the services. (Author/PF)

Computer software package systems called data management systems have great potential for the small or medium-sized library. (Author/PF)

This fact sheet offers basic instructions on connecting to the ERIC database for individuals who own or have access to a microcomputer and are familiar with ERIC and how to search it through a database terminal. Software, hardware, and telephone line components necesary to make a microcomputer act as a database terminal are outlined. The…

The binary vector is suggested as an alternative to the usual method of storing document pointers in an inverted index file. (Author)

The binary search scheme is discussed with reference to the number of passes required to locate a record and the distribution of the number of passes. (Author/PF)

A summary of one library's experiences in one year of searching a variety of bibliographic data bases. (PF)

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)

The development, capabilities, and products of the computer-based retrieval system of the Jet Propulsion Laboratory Library are described. The system handles books and documents, produces a book catalog, and provides a machine search capability. (Author)