Discussion of relevance and the needs of the users in information retrieval focuses on a deductive object-oriented approach and suggests eight inference rules for the deduction. Highlights include characteristics of a deductive object-oriented system, database and data modeling language, implementation, and user interface. (Contains 24…

Reviews past research on user-satisfaction and relevance information systems. Describes an experiment that compares user-satisfaction with retrieved items and the retrieval process with the relevance of the items in resolving user information needs. Results indicate a connection exists between relevance and user-satisfaction with the retrieved…

Proposes an argumentation-based method for information retrieval that involves representing a scholarly article by means of rhetorical structure rather than by a semantic representation of content. Topics addressed include problems with indexing practices, the argumentative nature of articles, rhetoric as an information categorizing schema, and…

The current state of information retrieval (IR) evaluation is reviewed with criticisms directed at the available test collections and the research and evaluation methodologies used, including precision and recall rates for online searches and laboratory tests not including real users. Automatic text retrieval systems are also discussed. (32…

Discusses approaches to the integration of query-based information retrieval and browsing in a hypertext network. A prototype system developed to evaluate the proposed approach in terms of retrieval effectiveness and search efficiency is presented, and design and implementation issues concerning the prototype are considered. (30 references) (EA)

Describes prototype retrieval systems that use statistically based rank retrieval of records for text retrieval and bibliographic records: (1) the PRISE System at the National Institute of Standards and Technology; (2) the CITE System, for MEDLINE; (3) the Muscat System at the Scott Polar Research Institute; and (4) the News Retrieval Tool at the…

Provides an overview of research on individual user differences and relevance in information retrieval. An experiment with a two-stage information retrieval system, using a topical set of document representations produced by a Boolean search and a citation profile is described. Implications for information retrieval are explored. (Contains 32…

Discussion of relevance provides an overview to this special issue on relevance research. Topics addressed include user-centered criteria that affect relevance judgments; information-seeking behavior; the need for appropriate research methodologies; models for system design and evaluation; and approaches to facilitate further research, including…

Discusses the need to develop the concept of user-based relevance for the benefit of users and for the meaningful development of future research in information retrieval. Characteristics of users' criteria of relevance are examined; and research methodology models are considered, including naturalistic inquiry versus scientific, or rationalistic,…

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…

The increasing complexity of evaluating information retrieval (IR) systems is discussed in terms of contributing factors and research methods. Examples are provided from experiments with weighted searching on a front-end system, information-seeking behavior and online catalogs, and the OKAPI experimental retrieval system. (21 references) (LAE)

Discusses the use of natural language processing to help organize multimedia data. The MARIE system, which uses captions to embody the classificatory information and heuristic advice necessary to search a database of photographs, is explained. Advantages include improved speed of access and the ability for improved user interaction. (Contains 21…

Discussion of the situational dynamism of user-centered relevance estimation focuses on a study that used magnitude estimation to express the relative importance of each document retrieved from an information retrieval system. Topics addressed include relevance estimation as a cognitive schema and the relationship between learning and user…

Discussion of library information systems focuses on the idea of including user-supplied data (USD) in libraries' automated catalogs. Hypertext is mentioned, the information explosion and the ability to selectively retrieve information is considered, and the value of user input in evaluating the relevance of material is discussed. (12 references)…

This study examines research that is part of an alternative paradigm in information needs and uses assessment. Approaches in the alternative paradigm include Sense-Making, Value-Added, and Anomalous States of Knowledge. From an analysis of these approaches and related research, a conceptual model has been developed. The model focuses on several…