| |  | Saracevic, Tefko | Relevance: A review of the literature and a framework for thinking on the notion in information science. Part II: nature and manifestations of relevance read moreAbstract: Relevance is a, if not even the, key notion in information science in general and information retrieval in particular. This two-part critical review traces and synthesizes the scholarship on relevance over the past 30 years and provides an updated framework within which the still widely dissonant ideas and works about relevance might be interpreted and related. It is a continuation and update of a similar review that appeared in 1975 under the same title, considered here as being Part I. The present review is organized into two parts: Part II addresses the questions related to nature and manifestations of relevance, and Part III addresses questions related to relevance behavior and effects. In Part II, the nature of relevance is discussed in terms of meaning ascribed to relevance, theories used or proposed, and models that have been developed. The manifestations of relevance are classified as to several kinds of relevance that form an interdependent system of relevances. In Part III, relevance behavior and effects are synthesized using experimental and observational works that incorporate data. In both parts, each section concludes with a summary that in effect provides an interpretation and synthesis of contemporary thinking on the topic treated or suggests hypotheses for future research. Analyses of some of the major trends that shape relevance work are offered in conclusions. | 2007 |
| | | Faran, Doron | Assessment — Making Sense of It All read moreAbstract: The knowledge integration (KI) process, depicted in Chap. 2, consists of three
stages: identification, acquisition and utilization – definitely in this order, as each
stage presupposes its former. Clearly, then, right identification determines the effectiveness
of the entire process since – as in any value chain – the pendulum's
principle works: a small deviation at the outset causes a huge shift down the road.... | 2006 |
| | | Mizzaro, Stefano | Relevance: the whole history read moreAbstract: Relevance is a fundamental, though not completely understood, concept for documentation, information science, and information retrieval. This article presents the history of relevance through an exhaustive review of the literature. Such history being very complex (about 160 papers are discussed), it is not simple to describe it in a comprehensible way. Thus, first of all a framework for establishing a common ground is defined, and then the history itself is illustrated via the presentation in chronological order of the papers on relevance. The history is divided into three periods (Before 1958, 1959-1976, and 1977-present) and, inside each period, the papers on relevance are analyzed under seven different aspects (methodological foundations, different kinds of relevance, beyond-topical criteria adopted by users, modes for expression of the relevance judgment, dynamic nature of relevance, types of document representation, and agreement among | 1997 |
| | | Mizzaro, Stefano M. | A Cognitive Analysis of Information Retrieval read moreAbstract: The lackness of a formal account is probably one of the most evident of the shortcomings of information retrieval : concepts like information, information need, and relevance are neither well understood nor formally defined. This paper sketches a cognitive framework that permits to analyze these three central concepts of the information retrieval scenario. The framework consists of concepts as cognitive agents acting in the world, knowledge states possessed by the cognitive agents, transitions among knowledge states, and inferences. On the basis of the framework, information is formally defined as a pair representing the difference between two knowledge states ; this definition permits to clarify the distinction among data, knowledge, and information and to discuss the subjectiveness of information. On this ground, the concept of information need is examined : it is defined, it is studied in the context of the interaction between an information retrieval system and a user, and the well known classification in verificative, conscious topical, and muddled needs is analyzed. On the basis of the above definitions of information and information need, relevance is formally defined, and some critical features of this concept are discussed. | 1996 |
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