Search (189 results, page 1 of 10)

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Abstract

The metrical characteristics of information space are compared with those of physical space. An abstract model is used to show that information space is like that of landscapes and skyscapes. As individuals we learn very early to correct the distortions that subjective appearances impose on us but traces of this process are shown by cosmological history. These arguments are supported by other evidence indicating that information quantities should be measured logarithmically

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Abstract

The basic entity model aims to provide information processing with a better theoretical foundation. Human information processing systems are perceived as physical symbol systems. The 4 basic entities that these systems handle are: data, information, knowledge and wisdom. The postulates fundamental to the model are the laws of boundary, interaction, and constructed information systems. The transformation of the basic entities taking place in the model create an information space that contains a set of information states in a particular knowledge domain. The space serves as a platform for decision making. Uses the model to analyze the strucuture of constructed information systems mathematically. Adopts the ontological, deep structure approach

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Abstract

The idea of obtaining subject access to information by being able to visualize an information space, and to navigate through that space toward useful or interesting information, is attractive and plausible. However, this approach to subject access requires additional cognitive processing associated with the interaction of cognitive facilities that deal with concepts and those that deal with space. This additional cognitive processing may cause problems for users, particularly in dealing with the dimensions, the details, and the symbols of information space. Further, it seems likely that different cognitive abilities are associated with conceptual and spatial cognition. As a result, users who deal well with subject access using traditional conceptual approaches may experience difficulty in using visualization and navigation. An experiment designed to investigate the effects of different cognitive abilities on the use of both conceptual and spatial representations of information is outlined

Date

22. 9.1997 19:16:05

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Abstract

A cognitive architecture embodies the more general structures and mechnaisms out of which could be made a model of individual cognition in certain situation. The space of models and architectures has a number of dimensions, including: dependence on domain; level of specification; and extent of coverage of different phenomena

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Abstract

Studies of public understanding, which include specific areas of study, such as: public understanding of science; intuitive physics; nutritional myths; and the 'mental mappimg' of geographical space are seen as falling into a general model of information transfer, using Popper's notion of 3 worlds. The deficiencies and distortions of understanding revealed by these studies can be perceived as defects in information transfer from worlds 1 and 3 (physical world and subjective world of mental phenomena respectively) to world2 (intellectual content of cultural artifacts). Proposes that more detailed cognitive profiling could identify these problem areas, thus enabling remedial measures to be taken to ensure better information transfer to the public in specific areas, such as: promotion of health care; education and advertising

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Footnote

Vgl. Original unter: http://www.sciencedirect.com/science/article/pii/S0896627315005243: "Morais Tavares, R., A. Mendelsohn, Y.Grossman, C.H. Williams, M. Shapiro, Y. Trope u. D. Schiller: A Map for Social Navigation in the Human Brain" in. Neuron 87(2015) no.1, S,231-243. [Deciphering the neural mechanisms of social behavior has propelled the growth of social neuroscience. The exact computations of the social brain, however, remain elusive. Here we investigated how the human br ain tracks ongoing changes in social relationships using functional neuroimaging. Participants were lead characters in a role-playing game in which they were to find a new home and a job through interactions with virtual cartoon characters. We found that a two-dimensional geometric model of social relationships, a "social space" framed by power and affiliation, predicted hippocampal activity. Moreover, participants who reported better social skills showed stronger covariance between hippocampal activity and "movement" through "social space." The results suggest that the hippocampus is crucial for social cognition, and imply that beyond framing physical locations, the hippocampus computes a more general, inclusive, abstract, and multidimensional cognitive map consistent with its role in episodic memory.].

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Abstract

It is argued that in information science we have to distinguish physical, objective, or document space from perspective, subjective, or information space. These two spaces are like maps and landscapes: each is a systematic distortion of the other. However, transformations can be easily made once the two spaces are distinguished. If the transformations are omitted we only get unhelpful physical solutions to information problems

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Abstract

The present article describes the use of Repertory Grid methodology as a menas of externalizing an individual's view of information space. The method is described with a single participant, and appears to offer a viable means of exploring the concept of information space. Future work will examine multiple views in an attampt to explore the extent to which the concept is shared among a group of people

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Abstract

Outlines the principles underlying the theory of polyrepresentation applied to the user's cognitive space and the information space of information retrieval systems, set in a cognitive framework. Uses polyrepresentation to represent the current user's information needs, problem states, and domain work tasks or interests in a structure of causality, as well as to embody semantic full text entities by means of the principle of 'intentional redundancy'

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Abstract

The paper discusses the applicability of contemporary knowledge theories to the study of information and knowledge as conditions of the survival and development of social organizations. Its relevance is connected to the importance that the variability of environmental conditions acquired from the acceleration of time and the relocation of space, as a result of the contemporary technological innovations. The majority of the managerial models, which focus on the production of information and organizational knowledge, share premises originated from a view of the world based on the myth of absolute objectivity. According to this interpretation, the organizational issue is related to the identification of procedures and rules, which enable the organizations to reach an optimal position in relation to the environmental conditions they face. Reflection on information and knowledge in organizations based on presuppositions of contemporary knowledge theories treats the relevance of circumstantial factors in the organization-environment context acknowledging the fact that the specifics in each organization are, at the same time, the contingency and the possibility of its survival. In this context, learning is not a procedure that can be normalized or generalized, but a process and a product of the survival of the organization. Keeping in mind the distance between this approach and the current patterns and methods - scientific knowledge based on the Cartesian method - the article focuses on the consequences of the hegemony of the scientific model of phenomena explanation - the myth of absolute objectivity - on the potential of the contemporary knowledge theory biology of knowing, or autopoiesis theory, by Humberto Maturana and Francisco Varela, which is based on the premise that, for the study of organizations, the perception of the object/phenomenon, and its interpretation, is not reachable outside the perceptive experience itself

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Abstract

Modelling of semantic space is discussed with specific reference to the authors' NSF-funded project on knowledge representation in dictionaries, thesauri, and free text. Research findings are discussed in relation to future research needs

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Abstract

This article examnies information theory from the aspect of its 'conduit metaphor'. A historical approach and a close reading of certain texts by Warren Weaver and Norbert Wiener shows how this metaphor was used to construct notions of language, information, information theory, and information science, and was used to extend the range of the notions across social and political space during the period of the Cold War. This article suggests that this legacy remains with us today in certain notions of information and information theory, and that this has affected not only social space in general, but in particular, the range and possibilities of information studies

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Abstract

When modelling pieces of unstructured information, such as full text forms, it is often necessary to recognize them based on a semantic principle, through which properties of information can be derived. Since there are several semantic principles that are related to each other, the resulting properties are also mutually relevant. This relevance is called 'relativity of concepts', whose modelling is indispensible to dealing exclusively with such properties of information that are invariant under the change of the underlying semantic principles. This paper uses the self-structured semantic relationship model to account for the relativity of concepts. More specifically, a set of local views rather than a single global view are introduced to the model, which greatly enhances the flexibility of the model's expressive power. Furthermore, semantic equivalence between the view-based information structures is also formalized in the proposed model. This truns out to be useful when integrating pieces of information that are structure based on different principles

Source

International forum on information and documentation. 20(1995) no.1, S.22-30

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Abstract

Purpose Using Michel Foucault's notion of heterotopia as a guide, the purpose of this paper is to explore the implications of considering the library as place, and specifically as a place that has the "curious property of being in relation with all the other sites, but in such a way as to suspect, neutralize, or invent the set of relations that they happen to designate, mirror, or reflect" (Foucault, 1986a, p. 24). Design/methodology/approach The paper draws upon a range of literary examples and from biographical accounts of authors such as Alan Bennett, Michel Foucault, and Umberto Eco to show how the library space operates as a heterotopia. Findings The paper finds that drawing together the constructs of heterotopia and serendipity can enrich the understanding of how libraries are experienced as sites of play, creativity, and adventure. Originality/value Foucault's concept of heterotopia is offered as an original and useful frame that can account for the range of experiences and associations uniquely attached to the library.

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Abstract

This article is about the mental coding processes involved in the flow of 'information' when the user is interacting with an 'enabling' information retrieval system. An 'enabling' IR system is designed to stimulate the user's grasping towards a higher understanding of the information need / problem / task that brought the user to the IR system. C. Shannon's (1949/1959) model of the flow of information and K.R. Popper's (1975) 3 worlds concept are used to diagram the flow of information between the user and system when the user receives a stimulating massage, with particluar emphasis on the decoding and encoding operations involved as the user processes the message. The key difference between the model of information flow proposed here and the linear transmission, receiver-oriented model now in use is that we assume that users of a truly interactive, 'enabling' IR system are primarily message senders, not passive receivers of the message, because they must create a new message back to the system, absed on a reconceptualization of their information need, while they are 'online' interacting with the system

Date

22. 5.1999 14:51:49

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Abstract

The dominant approaches in information literacy scholarship and research conflict with constructivist approaches to learning preferred by educators. Proposes an alternative, 'relational', model of information literacy which reveals a picture of information literacy that is constructed in terms of varying relations between people and information. These relations are captured in 7 categories, graphially conveyed through awareness structures, which together represent information literacy as it is experienced. Information literacy education may be interpreted as helping people to experience information use differently. This model demonstrates that: the meanings associated with information literacy by information professionals may not be shared by users; the experienced meaning of information literacy is fluid and contextually bound; and, understanding of information literacy and related concepts will deepen if the experience of information users is given priority in research. Proposes an agenda for information literacy research based upon the relational approach

Source

New review of information and library research. 3(1997), S.1-22

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Abstract

It is argued that the current generation of online catalogues do not meet basic user expectations about how to search for information. After a brief examination of virtual reality and its associated technology, a new form of online catalogue, the 'virtual reality library' is proposed. Users browse an information space, a computer-controlled set of shelf orderings for items. Its form, workings and design are investigated in detail. The concept of the virtual reality library is then applied to information resources which either have no physical repository or have one which is not accessible to users

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Abstract

This review introduces a comprehensive model of the cognitive process and mechanisms of individual sensemaking to provide a theoretical basis for: - empirical studies that improve our understanding of the cognitive process and mechanisms of sensemaking and integration of results of such studies; - education in critical thinking and sensemaking skills; - the design of sensemaking assistant tools that support and guide users. The paper reviews and extends existing sensemaking models with ideas from learning and cognition. It reviews literature on sensemaking models in human-computer interaction (HCI), cognitive system engineering, organizational communication, and library and information sciences (LIS), learning theories, cognitive psychology, and task-based information seeking. The model resulting from this synthesis moves to a stronger basis for explaining sensemaking behaviors and conceptual changes. The model illustrates the iterative processes of sensemaking, extends existing models that focus on activities by integrating cognitive mechanisms and the creation of instantiated structure elements of knowledge, and different types of conceptual change to show a complete picture of the cognitive processes of sensemaking. The processes and cognitive mechanisms identified provide better foundations for knowledge creation, organization, and sharing practices and a stronger basis for design of sensemaking assistant systems and tools.

Date

22. 8.2014 16:55:39

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Abstract

The integrated information theory (IIT) starts from phenomenology and makes use of thought experiments to claim that consciousness is integrated information. Specifically: (i) the quantity of consciousness corresponds to the amount of integrated information generated by a complex of elements; (ii) the quality of experience is specified by the set of informational relationships generated within that complex. Integrated information (PHI) is defined as the amount of information generated by a complex of elements, above and beyond the information generated by its parts. Qualia space (Q) is a space where each axis represents a possible state of the complex, each point is a probability distribution of its states, and arrows between points represent the informational relationships among its elements generated by causal mechanisms (connections). Together, the set of informational relationships within a complex constitute a shape in Q that completely and univocally specifies a particular experience. Several observations concerning the neural substrate of consciousness fall naturally into place within the IIT framework. Among them are the association of consciousness with certain neural systems rather than with others; the fact that neural processes underlying consciousness can influence or be influenced by neural processes that remain unconscious; the reduction of consciousness during dreamless sleep and generalized seizures; and the distinct role of different cortical architectures in affecting the quality of experience. Equating consciousness with integrated information carries several implications for our view of nature.

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Abstract

2 studies examined the effect that mental representations derived from maps and verbal descriptions have on the recall of facts from a text. In experiment 1, subjects studies a map of Tasmania, a control map of Ceylon, or comparable verbal descriptions and then listened to a text containing facts about Tasmania. Fact recall was higher and map drawings were more accurate for the group that studied the Tasmania map. In experiment 2, subject studied a map of Tasmania, or one of two verbal descriptions (using different sequences of landmarks) of Tasmania. The results replicated those of experiment 1. These findings suggest that there may be fundamental differences between visual and verbal representations of the same space