Background: During the last fifty years, improved information retrieval techniques have become necessary because of the huge amount of information people have available, which continues to increase rapidly due to the use of new technologies and the Internet. Stemming is one of the processes that can improve information retrieval in terms of…

Introduction: Several controlled vocabularies are used for indexing three journal articles to check if better or equal consistency rates are achieved with a list of descriptors than with a standard thesaurus and augmented thesaurus. Method: A terminology set for library and information Science was used to build a list of descriptors with…

The idea of pseudo-classification based on external relevance is introduced and compared with the more usual classifications derived by associative techniques. A general model for an information retrieval system using term classification is described. The derivation of a set of operators, or perturbations, for adjusting pseudo-classification and…

The investigation is part of a continuing project to find better means for studying and evaluating document representations (e.g., abstracts, indexes). The present study focused on understanding the ways individuals interpret index terms, with the goal of using the findings in improving indexing systems. Indexing systems use all-or-none bases for…

The Index to Dental Literature" is evaluated in terms of its classification system, its standardization of nomenclature, its use of cross references and its effectiveness in machine-searching for information. (Author)

A SURVEY OF THE LITERATURE ON EVALUATION OF INFORMATION SYSTEMS HAS BEEN CONDUCTED BY THE TECHNICAL INFORMATION EXCHANGE, CENTER FOR COMPUTER SCIENCES AND TECHNOLOGY, NATIONAL BUREAU OF STANDARDS. DURING THE EARLY STAGES OF THE SURVEY, THE LITERATURE WAS DIVIDED AMONG DESCRIPTIONS OF PROGRAMS WHICH COMPARED THE PERFORMANCE OF TWO OR MORE…

Large-scale, on-line information storage and retrieval systems pose numerous problems above those encountered by smaller systems. A step toward the solution of these problems is presented along with several demonstrations of feasibility and advantages. The methodology on which this solution is based is that of a posteriori automatic classification…

A set of twenty five questions was processed against a computer-stored file of 9159 document references in the field of ferrous metallurgy, representing the 1965 coverage of the Iron and Steel Institute (London) information service. A basis for evaluation of system performance characteristics and analysis of system failures was provided by using…

Presents results of a study of seven World Wide Web-based "What's New" announcement services to determine their relevance for academic library Webmasters, concluding that the use of such services for locating appropriate new Internet resources is problematic. A list of 15 recommended Web-based sources of new sites for library home pages…

A proposed classification system was studied to determine its efficacy to the Air Force Control-Display Area. Based on negative outcomes from a logical assessment of the proposed system, an alternate system was proposed to include the coordinate index concept. Upon development of a thesaurus and an index system for 106 documents on VSTOL/VTOL…

This paper was prepared to provide a frame of reference to the role of microfilm within the information retrieval world and to provide an opportunity for evaluation of the use of microforms for active retrieval applications. The paper discusses the principles of information retrieval, considers subject and classification indexing, and describes…

THIS REPORT COVERS A REVIEW OF THE LITERATURE ON THE DIAL ACCESS INFORMATION SYSTEMS (DAIRS), USED FOR RETRIEVING AND TRANSMITTING AUDIO AND/OR VISUAL INSTRUCTIONAL MATERIALS TO CARRELS OR CLASSROOMS ELECTRONICALLY. AFTER FORMULATING A WORKING DEFINITION OF THE SUBJECT, A CLASSIFICATION SYSTEM AND SPECIFIC SUBJECT HEADINGS FOR USE IN THE SEARCH…