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Abstract

Discusses classification as a central resource of human informational activity and as a central aspect of research for many sciences. Argues that thinking about the background of classification can help improve, or at least clarify, the practical tasks of documentary workers and librarians. Discusses the relationship and gaps between cognitive science and information science, and considers the contributions of epistemology and cognitive psychology; in particular, focuses on the role of the latter in the development of an integrative theory of classification

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Abstract

Intended is first of all a preliminary review of the implications that the new approaches to the theory of classification, mainly from cognitive psychology and epistemology may have for information work and research. As a secondary topic the scientific relations existing among information science, epistemology and the cognitive sciences are discussed. Classification is seen as a central activity in all daily and scientific activities, and, of course, of knowledge organization in information services. There is a mutual implication between classification and conceptualization, as the former moves in a natural way to the latter and the best result elaborated for classification is the concept. Research in concept theory is a need for a theory of classification. In this direction it is of outstanding importance to integrate the achievements of 'natural concept formation theory' (NCFT) as an alternative approach to conceptualization different from the traditional one of logicians and problem solving researchers. In conclusion both approaches are seen as being complementary: the NCFT approach being closer to the user and the logical one being more suitable for experts, including 'expert systems'

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Abstract

Pictorial image retrieval is analysed as a cognitive process. Such a model could build on the physical paradigm of information science, based on the general model proposed by Shannon and Weaver. Some of the different cognitive approaches which are possible are modeling: a) the communicative interaction, with different possibilities depending on which level of the process the researcher wishes to emphasise; b) the acquisition of image information, attending to the perceptual qualities of images, the recognition of objects, the assigning of meaning and the gestalt process; c) the image retrieval process as a problem solving interaction, where the user solves an informational problem by using metacognitive processes, such as search strategies and translation processes; and d) the translation processes between imagination and conceptual thinking that image retrieval requires. The first has a great theoretical potential to integrate the rest of them. From a general point of view, information retrieval interactions constitute communication processes, where semantic and pragmatic aspects are as important as the transmission of a message. In this context, images and text conform to two distinct forms of communication, deeply rooted in our cognitive system, that produce distinct forms of knowledge. In spite of that, pictorial retrieval requires the involvement of conceptual thinking, requiring some kind of translation between concepts and images on the part of the system, the user or the mediator, that is, the information professional.

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Date

16. 3.2008 18:22:50