Search (204 results, page 2 of 11)

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Abstract

This paper develops a new perspective on the relation of instantiation. This new perspective is based on recent research in cognitive psychology, or, more specifically, on the theory of frames, which was defined by Lawrence Barsalou to capture the common features of contemporary models of human concepts. I show how this new perspective may be applied to coordinate two rudimentary mental operations: categorization and conceptualization.

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Abstract

In order to test how associated verbal and spatial stimuli are processed in memory, undergraduates studied a reference map as either an intact unit or as a series of individual features, and read a text containing facts related to map features. In Addition, the map was presented either before or after reading the text. Seeing the intact map prior to the text led to better recall of both map information and facts from the text. These results support a dual coding modell, where stimuli such as maps possess a retrieval advantage because they allow simultaneous representation in working memory. This advantage occurs because information from the map can be used to cue retrieval of associated verbal facts, without exceeding the processing constraints of the memorial system

Date

22. 7.2000 19:18:18

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Source

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

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Abstract

It is discussed what is underlying the assumption of modality-specific processing systems and representations. Starting from the information processing approach relevant aspects of mental representations and their physiological realizations are discussed. Then 3 different forms of modality-specific systems are distinguished: as stimulus specific processing, as specific informational formats, and as modular part systems. Parallel to that 3 kinds of analogue systems are differentiated: as holding an analogue-relation, as having a specific informational format and as a set of specific processing constraints. These different aspects of the assumption of modality-specific systems are demonstrated in the example of visual and spatial information processing. It is concluded that postulating information-specific systems is not a superfluous assumption, but it is necessary, and even more likely it is inevitable consequence of an optimization of stimulus processing

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Abstract

In philosophy of language, the phenomena fundamental to human communication are routinely modeled in ways that do not require commitment to a concept of "information" separate from those of "data," "meaning," "communication," "knowledge," and "relevance" (inter alia). A taxonomy of conceptions of information may be developed that relies on commonly drawn philosophical distinctions (between linguistic, mental, and physical entities, between objects and events, and between particulars and universals); in such a taxonomy, no category requires the label "information" in order to be differentiated from others. It is suggested that a conception of information-as-relevance is currently the most productive of advances in theoretical information studies.

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Abstract

Discusses the various purposes of knowledge representation including the understanding of texts, cognitive research, expert system development and information retrieval. Analyses the relationship of classification to knowledge, including the role of cluster analysis. Examines the problems of knowledge representation and the solution offered through proper classification

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Abstract

This article presents an updated account of integrated information theory of consciousness (IIT) and some of its implications. IIT stems from thought experiments that lead to phenomenological axioms (existence, compositionality, information, integration, exclusion) and corresponding ontological postulates. The information axiom asserts that every experience is specific - it is what it is by differing in its particular way from a large repertoire of alternatives. The integration axiom asserts that each experience is unified - it cannot be reduced to independent components. The exclusion axiom asserts that every experience is definite - it is limited to particular things and not others and flows at a particular speed and resolution. IIT formalizes these intuitions with postulates. The information postulate states that only "differences that make a difference" from the intrinsic perspective of a system matter: a mechanism generates cause-effect information if its present state has selective past causes and selective future effects within a system. The integration postulate states that only information that is irreducible matters: mechanisms generate integrated information only to the extent that the information they generate cannot be partitioned into that generated within independent components. The exclusion postulate states that only maxima of integrated information matter: a mechanism specifies only one maximally irreducible set of past causes and future effects - a concept. A complex is a set of elements specifying a maximally irreducible constellation of concepts, where the maximum is evaluated over elements and at the optimal spatio-temporal scale. Its concepts specify a maximally integrated conceptual information structure or quale, which is identical with an experience. Finally, changes in information integration upon exposure to the environment reflect a system's ability to match the causal structure of the world. After introducing an updated definition of information integration and related quantities, the article presents some theoretical considerations about the relationship between information and causation and about the relational structure of concepts within a quale. It also explores the relationship between the temporal grain size of information integration and the dynamic of metastable states in the corticothalamic complex. Finally, it summarizes how IIT accounts for empirical findings about the neural substrate of consciousness, and how various aspects of phenomenology may in principle be addressed in terms of the geometry of information integration.

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Abstract

The inferential communication model, which implies that the meaning of a document is inferred in the context of the user's situation to result in different meanings for users in different situations, is used to study an inferential science document representation method. Several topical components and non topical components of the science document were found as the inferred meanings of the document. These show the science document aspects which are used for relevance judgements. Science documents need to be represented in terms of these aspects for effective system's, intermediary's, and user's judgements of the meaning and the relevance of the document

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Abstract

Hypermedia information systems, because of their inherent qualities of nonlinearity and associative linking, offer the potential of facilitating enhanced knowledge representation and construction for users. These capabilities will be more fully realized if hypermedia information systems are developed and implemented based on constructivist learning theory. Examines the qualities of hypermedia systems that enable them to facilitate learning, discusses the background of current learning theories and provides a brief view of a possible hypermedia system based on constructivist learning principles that could be developed through the use of intellegent autonomous agents

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Abstract

The new forms of multimedia information and reference materials require an analysis of the concept of knowledge representation and how knowledge can be extracted from them. Compares these concepts with a model of human information processing and knowledge representation which is based on communication oriented concepts. Proposes a typology of general reference materials based upon this comparison. Original abstract

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Abstract

This paper considers an instance of non-verbal graphic communication from the legend of Theseus, in terms of information theory. The efficient cause of a failure in communication is regarded as a selection error and the formal cause as the absence of redundancy from the signals (a binary contrast between a black and a white sail) for transmission. Two considerations are then introduced. First, why should such a system of signalling have been succeeded by a graphic communication system, in alphabetic written language, so strongly marked by its redundancy? Second, why has information theory been so successful in describing systems for signal transmission but far less productive for modelling human-to-human communication, at the level of meaning or of the effects of messages on recipients? The legend is read historically, adopting specific insights, a method of interpretation, and a historical schema from Vico. The binary code used for the signal transmission is located as a rare but significant transitional form, mediating between heroic emblems and written language. For alphabetic written language, a link to the sounds of oral utterance replaces the connection to the mental states of the human information source and destination. It is also suggested that redundancy was deliberately introduced to counteract the effects of selection errors and noise. With regard to information theory, it is suggested that conformity with necessary conditions for signal transmission, which may include the introduction of redundancy, cannot be expected to yield insights into communication, at the level of meaning or the effects of messages.

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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

Purpose The purpose of this paper is to propose an appropriate symbolic representation, as well as its metaphorical interpretation, to illustrate the special role of information in the knowledge acquisition process. Design/methodology/approach Besides the literature review, this is a speculative study based on a symbolic and metaphorical point of view. Findings The proposed symbolic representation was derived from the conceptual designation of information "as a flow" and, accordingly, by the corresponding redrawing of the data-information-knowledge-wisdom (DIKW) pyramid. The knowledge acquisition process is symbolically represented by the growth of a "tree of knowledge" which is planted on a "data earth," filled with "information sap" and lit by the rays of the "sun of the mind," a new symbol of the concept of wisdom in the DIKW model. As indicated, a key concept of this metaphorical interpretation is the role of "information sap" which rises from the roots of the "tree of knowledge" to the top of the tree and it is recognized as an invisible link between "world of data" and "world of knowledge." This concept is also proposed as a new symbolic representation of the DIKW model. Originality/value On the basis of specific symbolic-metaphorical representation, this paper provides a relatively new concept of information which may help bridge observed gaps in the understanding of information in various scientific fields, as well as in its understanding as an objective or subjective phenomenon.

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Abstract

Many definitions of information have been suggested throughout the history of information science. In this essay, the objective has been to provide a definition that is usable for the physical, biological and social meanings of the term, covering the various senses important to our field. Information has been defined as the pattern of organization of matter and energy. Information is everywhere except where there is total entropy. Living beings process, organize and ascribe meaning to information. Some pattern of organization that has been given meaning by a living being has been defined as information 2, while the above definition is information 1, when it is desirable to make the distinction. Knowledge has been defined as information given meaning and integrated with other contents of understanding. Meaning itself is rooted ultimately in biological survival. In the human being, extensive processing space in the brain has made possible the generation of extremely rich cultural and interpersonal meaning, which imbues human interactions. (In the short term, not all meaning that humans ascribe to information is the result of evolutionary processes. Our extensive brain processing space also enables us to hold beliefs for the short term that, over the long term, may actually be harmful to survival.) Data 1 has been defined as that portion of the entire information environment (including internal inputs) that is taken in, or processed, by an organism. Data 2 is that information that is selected or generated and used by human beings for research or other social purposes. This definition of information is not reductive--that is, it does not imply that information is all and only the most microscopic physical manifestation of matter and energy. Information principally exists for organisms at many emergent levels. A human being, for example, can see this account as tiny marks on a piece of paper, as letters of the alphabet, as words of the English language, as a sequence of ideas, as a genre of publication, as a philosophical position and so on. Thus, patterns of organization are not all equal in the life experience of animals. Some types of patterns are more important, some less so. Some parts of patterns are repetitive and can be compressed in mental storage. As mental storage space is generally limited and its maintenance costly to an animal, adaptive advantage accrues to the species that develops efficient storage. As a result, many species process elements of their environment in ways efficient and effective for their particular purposes; that is, as patterns of organization that are experienced as emergent wholes. We see a chair as a chair, not only as a pattern of light and dark. We see a string of actions by a salesperson as bait and switch, not just as a sequence of actions. We understand a series of statements as parts of a whole philosophical argument, not just as a series of sentences. The understanding of information embraced here recognizes and builds on the idea that these emergent wholes are efficient for storage and effective for the life purposes of human beings as successful animals (to date) on our planet. Thus, people experience their lives in terms of these emergent objects and relations, for the most part. Likewise, information is stored in retrieval systems in such a way that it can be represented to human beings in their preferred emergent forms, rather than in the pixels or bits in which the information is actually encoded within the information system.

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Abstract

Recently, a new book on knowledge organization has been published by Greenwood Press. The title is 'Information seeking and subject representation: an activity-theoretical approach to information science'. This book presents a new general theory for information science and knowledge organization, based on a theory of information seeking. The author is Dr. Birger Hjørland, Royal School of Library and Information Science. In 1994, he presented his work on theory for KO at the 3rd International ISKO conference in Copenhagen. The book aims to provide both a new understanding for the foundations of information science and knowledge organization, and to provide new directions in research and teaching within these fields. KO (Hanne Albrechtsen) has interviewed Birger HjÝrland in Copenhagen about his views on knowledge organization and subject representation

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Abstract

Anyone who has clarified a thought or prompted a response during a conversation by drawing a picture has exploited the potential of image making to convey information. Images are increasingly ubiquitous in daily communication due to advances in visually enabled information and communication technologies (ICT), such as information visualization applications, image retrieval systems, and virtual collaborative work tools. Although images are often used in social contexts, information science research concerned with the visual representation of information typically focuses on the image artifact and system building. To learn more about image making as a form of social interaction and as a form of information practice, a qualitative study examined face-to-face conversations involving the creation of ad hoc visualizations (i.e., "napkin drawings"). Interactional sociolinguistic concepts of conversational involvement and coordination guided multimodal analysis of video-recorded interactions that included spontaneous drawing. Findings show patterns in communicative activities associated with the visual representation of information. Furthermore, the activity of mark making contributes to the maintenance of conversational involvement in ways that are not always evident in the drawn artifact. This research has implications for the design and evaluation of visually enabled virtual collaboration environments, visual information extraction and retrieval systems, and data visualization tools.

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Abstract

As an answer to the humanistic, socially oriented critique of the information-processing paradigms used as a conceptual frame for library information science, this article formulates a broader and less objective concept of communication than that of the information-processing paradigm. Knowledge can be seen as the mental phenomenon that documents (combining signs into text, depending on the state of knowledge of the recipient) can cause through interpretation. The examination of these "correct circumstances" is an important part of information science. This article represents the following developments in the concept of information: Information is understood as potential until somebody interprets it. The objective carriers of potential knowledge are signs. Signs need interpretation to release knowledge in the form of interpretants. Interpretation is based on the total semantic network, horizons, worldviews, and experience of the person, including the emotional and social aspects. The realm of meaning is rooted in social-historical as well as embodied evolutionary processes that go beyond computational algorithmically logic. The semantic network derives a decisive aspect of signification from a person's embodied cultural worldview, which, in turn, derives from, develops, and has its roots in undefined tacit knowledge. To theoretically encompass both the computational and the semantic aspects of document classification and retrieval, we need to combine the cybernetic functionalistic approach with the semiotic pragmatic understanding of meaning as social and embodied. For such a marriage, it is necessary to go into the constructivistic second-order cybernetics and autopoiesis theory of von Foerster, Maturana, and Luhmann, on the one hand, and the pragmatic triadic semiotics of Peirce in the form of the embodied Biosemiotics, on the other hand. This combination is what I call Cybersemiotics.

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Abstract

Originality/value - The general consensus is that uncertainty is a mental state of users reflecting a gap in knowledge which triggers an IS&R process, and that the gap is reduced as relevant information is found, and thus that the uncertainty disappears as the search process concludes. However, in the present study it is argued that some form of uncertainty is always associated with some part of the IS&R process and that it also fluctuates throughout the IS&R process. Users may therefore feel uncertain at any stage of the IS&R process and this may be related to: the initial information need and expression of that need, the search process itself, including identification of relevant systems, services and resources; and the assessment of, and reaction to, the results produced by the search process. Uncertainty may be unresolved, or even increase, as the user progresses, often iteratively, through the IS&R process and may remain even after its completion, resulting in what may be called a persistent uncertainty. In other words, this research hypothesises that, in addition to the uncertainty that triggers the information search process (Wilson et al., 2000), users suffer from varying degrees of uncertainty at every stage of the information search and retrieval process, and that in turn, triggers different information-seeking behaviours.

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Abstract

This study aimed to evaluate the extent to which Year Seven students, teachers and teacher-librarians, in three rural Australian state schools, would value question formulation as an information literacy skill. Question formulation is defined here as students independently formulating their own questions for curricular assignments. It also aimed to evaluate the extent to which these students would transfer question formulation across subjects and across time. The study used a constructivist grounded theory approach and data were analysed using constructivist grounded analysis. The findings of the study indicated that most students, teachers and teacher-librarians valued question formulation as an information literacy skill, but that this value was often limited in scope, e.g. only in relation to information retrieval. Some students, and most teachers and teacher-librarians, saw extensive value in question formulation and took a more holistic view, e.g. linking question formulation with assignment writing. A small minority of students did not value question formulation as they found it a difficult concept. Students used written questions when required to do so by teachers but some students preferred to develop mental questions when doing assignments. There was some clear evidence of transfer, in that some students applied what they had learned about question formulation in a previous term to a new subject assignment. On the other hand, many other students did not transfer what they had learned, and the evidence showed that this was either because they did not understand the concept of transfer (a small minority), or that they lacked motivation to transfer, or that they expected the teacher and/or teacher-librarian to tell them to formulate their own questions. It was clear from the study that there was no culture of transfer in these schools and that this made it unlikely that students, apart from a well-motivated minority, would transfer skills.