The Telemakus System builds on the areas of concept representation, schema theory, and information visualization to enhance knowledge discovery from scientific literature. This article describes the underlying theories and an overview of a working implementation designed to enhance the knowledge discovery process through retrieval, visual and…

Results of field study measuring end-user perceptions of sources of information (computer-based, libraries, individuals) suggest that accessibility is multidimensional concept encompassing physical access to source, interface with source, ability to physically retrieve potentially relevant information; and perceptions of accessibility are…

Empirical comparisons are made of three statistical sampling methods evaluated for estimating total number of relevant documents in collection for given query: simple random sampling, random sampling which assigns unequal selection probabilities to individual documents in collection, and curve fitting and extrapolation. Nine references and…

Discusses the concept of search failure in document retrieval systems and three effectiveness measures, precision, recall, and "fallout." Four research methods--retrieval effectiveness measures, user satisfaction measures, transaction log analysis, and critical incident technique--are examined, and findings of major studies using each of the…

Discusses formulation of value function based on research from modelling, value assessment, human information seeking behavior, and human decision making. The proposed function is incorporated into computer-based fiction retrieval system and evaluated based on ability of individual's value function to discriminate among novels selected, rejected,…

Text analytics refers to the process of analyzing unstructured data from documented sources, including open-ended surveys, blogs, and other types of web dialog. Text analytics has enveloped the concept of text mining, an analysis approach influenced heavily from data mining. While text mining has been covered extensively in various computer…

The rapidly increasing amount of information retrieval experimentation necessitates that considerable attention be paid to the problems of experimental methodology. The authors feel that the generalized and well-known experience in the physical, life and behavioral sciences concerning the role of methodology in scientific research must be applied…

Zipf's law states that if words in a text are arranged in decreasing order of occurrence, then the product of the rank of a word and the number of times it occurs is a constant of that text. Examination of the probabilities of occurrence of multi-word phrases in information retrieval in relation to the probabilities of occurrence of single words…

THE PURPOSE OF THE PROJECT WAS TO REVIEW THE TEST AND EVALUATION LITERATURE ON DOCUMENT RETRIEVAL SYSTEMS, TO IDENTIFY THE METHODOLOGICAL PROBLEMS, AND TO DEVELOP A SET OF RECOMMENDATIONS FOR RESEARCHERS IN THE FIELD. TWO BASIC TOOLS WERE DEVELOPED TO AID IN THE DESCRIPTION AND EVALUATION OF THE STUDIES REVIEWED. THE FIRST TOOL WAS A DESCRIPTIVE…

The Comparative Systems Laboratory (CSL) proposed to deal with the problem of testing retrieval systems by examining a number of processes involved in such systems, with particular attention to the human factor. It is hoped that the results of the project will be useful in refining methodologies for experimentation with information retrieval (IR)…

Proposes a method for protein name extraction from biological texts. The method exploits hand-crafted rules based on heuristics and a set of protein names (dictionary). The approach avoids use of natural language processing tools so as to improve processing speed. Evaluation experiments were conducted in terms of: accuracy, generalizability, and…

Explores the intended and unintended outcomes of information technology on (1) business and economics, (2) research, and (3) library career preparation. Specific examples of the potential effects of databasing in these areas are provided, and four references are listed. (SW)

Describes experiments relating information to decision making. The experiments were developed to validate previously suggested conceptual model of information flow and its relation to decision making and to establish specific values for significant parameters involved. Background and summary of recent research and experimental design and research…

Investigates how an informal computerized environment, or workspace, can support information seeking. Outlines the design space for information-seeking environments and presents a prototype, SketchTrieve, a graphic editor. Discusses how this environment might support information-seeking in ways not available in other more overdetermined systems.…

Reasons for and methods of using the WESTLAW orientation program for computer-assisted legal research training are presented. A primer is provided to acquaint the student with the research and information retrieval system, especially in formulating search strategies. Available from Am. Assoc. Law Libraries, 53 W. Jackson Blvd., Suite 1201,…