Search (703 results, page 1 of 36)

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Abstract

Knowledge organization (KO) can be postulated as existing on a continuum between classificatory activity and perception. Studying perception and its role in the identification of concepts is critical for the advancement of KO. The purpose of this research is to advance our understanding of the role of perception in KO systems. We briefly review the role of perception in KO and some preliminary evidence about affective social tagging, which is seen as a form of everyday classification. We consider how Husserlian phenomenology might be useful for analyzing the role of perception in affective social tagging. Finally, preliminary results of an empirical study are reported.

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Abstract

Previous studies of user-generated vocabularies (e.g., Golder & Huberman, 2006; Munk & Mork, 2007b; Yoon, 2009) have proposed that a primary source of tag agreement across users is due to wide-spread use of tags at the basic level of abstraction. However, an investigation of levels of abstraction in user-generated tagging vocabularies did not support this notion. This study analyzed approximately 8000 tags generated by 40 subjects. Analysis of 7617 tags assigned to 36 online resources representing four content categories (TOOL, FRUIT, CLOTHING, VEHICLE) and three resource genres (news article, blog, ecommerce) did not find statistically significant preferences in the assignment of tags at the superordinate, subordinate or basic levels of abstraction. Within the framework of Heidegger's (1953/1996) notion of handiness , observed variations in the preferred level of abstraction are both natural and phenomenological in that perception and understanding -- and thus the meaning of "things" -- arise out of the individual's contextualized experiences of engaging with objects. Operationalization of superordinate, subordinate and basic levels of abstraction using Heidegger's notion of handiness may be able to account for differences in the everyday experiences and activities of taggers, thereby leading to a better understanding of user-generated tagging vocabularies.

Date

5. 9.2014 16:22:27

Source

Knowledge organization in the 21st century: between historical patterns and future prospects. Proceedings of the Thirteenth International ISKO Conference 19-22 May 2014, Kraków, Poland. Ed.: Wieslaw Babik

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Content

Vgl.: http%3A%2F%2Fcreativechoice.org%2Fdoc%2FHansJonas.pdf&usg=AOvVaw1TM3teaYKgABL5H9yoIifA&opi=89978449.

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Abstract

This book provides a comprehensive account of the intentionality of perceptual experience. With special emphasis on vision Searle explains how the raw phenomenology of perception sets the content and the conditions of satisfaction of experience. The central question concerns the relation between the subjective conscious perceptual field and the objective perceptual field. Everything in the objective field is either perceived or can be perceived. Nothing in the subjective field is perceived nor can be perceived precisely because the events in the subjective field consist of the perceivings, whether veridical or not, of the events in the objective field.
Searle begins by criticizing the classical theories of perception and identifies a single fallacy, what he calls the Bad Argument, as the source of nearly all of the confusions in the history of the philosophy of perception. He next justifies the claim that perceptual experiences have presentational intentionality and shows how this justifies the direct realism of his account. In the central theoretical chapters, he shows how it is possible that the raw phenomenology must necessarily determine certain form of intentionality. Searle introduces, in detail, the distinction between different levels of perception from the basic level to the higher levels and shows the internal relation between the features of the experience and the states of affairs presented by the experience. The account applies not just to language possessing human beings but to infants and conscious animals. He also discusses how the account relates to certain traditional puzzles about spectrum inversion, color and size constancy and the brain-in-the-vat thought experiments. In the final chapters he explains and refutes Disjunctivist theories of perception, explains the role of unconscious perception, and concludes by discussing traditional problems of perception such as skepticism.

Content

The Bad Argument Summary of the Theory of Intentionality Consciousness The Intentionality of Perceptual Experiences Further Developments of the Argument Against the Bad Argument How Perceptual Intentionality Works I: Basic Features, Causation, and Intentional Content How Perceptual Intentionality Works II: Extending the Analysis to Non-basic Features Disjunctivism Unconscious Perception Classical Theories of Perception

LCSH

Perception (Philosophy)

Subject

Perception (Philosophy)

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Abstract

Political sentiment analysis using social media, especially Twitter, has attracted wide interest in recent years. In such research, opinions about politicians are typically divided into positive, negative, or neutral. In our research, the goal is to mine political opinion from social media at a higher resolution by assessing statements of opinion related to the personality traits of politicians; this is an angle that has not yet been considered in social media research. A second goal is to contribute a novel retrieval-based approach for tracking public perception of personality using Gough and Heilbrun's Adjective Check List (ACL) of 110 terms describing key traits. This is in contrast to the typical lexical and machine-learning approaches used in sentiment analysis. High-precision search templates developed from the ACL were run on an 18-month span of Twitter posts mentioning Obama and Romney and these retrieved more than half a million tweets. For example, the results indicated that Romney was perceived as more of an achiever and Obama was perceived as somewhat more friendly. The traits were also aggregated into 14 broad personality dimensions. For example, Obama rated far higher than Romney on the Moderation dimension and lower on the Machiavellianism dimension. The temporal variability of such perceptions was explored.

Date

22. 1.2016 11:25:47

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Abstract

Purpose The purpose of this paper is to uncover similarities and differences among emphasized information literacy (IL) skills for the disciplines of political- and social sciences, economics, educational sciences, law sciences, mathematics, life sciences, history and German studies, based on an analysis of IL teaching materials. Design/methodology/approach Eight issues of the German language publication series Erfolgreich recherchieren (Succesful Research Strategies) are compared by using a structuring content analysis. The category system is based on the IL standards and performance indicators of the Association of College and Research Libraries (2000), extended with additional categories. Findings The results, first, suggest that the biggest similarities and differences among the disciplines are found concerning the determination of the nature and extent of the needed information, especially in the area of identifying potential sources of information. Second, some of the disciplines focus more on international sources, whereas others focus on country- and language-specific sources. Third, the criteria to define the appropriate retrieval system differ among the various disciplines. Fourth, approaches to narrow the search results differ among the various disciplines. Fifth, the critical evaluation of sources is addressed in all disciplines but relates to different contexts. Research limitations/implications This approach only addresses one book per discipline out of a German language book series. Further research is needed. Originality/value This paper is unique in its approach and one of few papers on disciplinary differences in IL perception.

Date

20. 1.2015 18:30:22

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Abstract

Are art and science separated by an unbridgeable divide? Can they find common ground? In this new book, neuroscientist Eric R. Kandel, whose remarkable scientific career and deep interest in art give him a unique perspective, demonstrates how science can inform the way we experience a work of art and seek to understand its meaning. Kandel illustrates how reductionism?the distillation of larger scientific or aesthetic concepts into smaller, more tractable components?has been used by scientists and artists alike to pursue their respective truths. He draws on his Nobel Prize-winning work revealing the neurobiological underpinnings of learning and memory in sea slugs to shed light on the complex workings of the mental processes of higher animals. In Reductionism in Art and Brain Science, Kandel shows how this radically reductionist approach, applied to the most complex puzzle of our time?the brain?has been employed by modern artists who distill their subjective world into color, form, and light. Kandel demonstrates through bottom-up sensory and top-down cognitive functions how science can explore the complexities of human perception and help us to perceive, appreciate, and understand great works of art. At the heart of the book is an elegant elucidation of the contribution of reductionism to the evolution of modern art and its role in a monumental shift in artistic perspective. Reductionism steered the transition from figurative art to the first explorations of abstract art reflected in the works of Turner, Monet, Kandinsky, Schoenberg, and Mondrian. Kandel explains how, in the postwar era, Pollock, de Kooning, Rothko, Louis, Turrell, and Flavin used a reductionist approach to arrive at their abstract expressionism and how Katz, Warhol, Close, and Sandback built upon the advances of the New York School to reimagine figurative and minimal art. Featuring captivating drawings of the brain alongside full-color reproductions of modern art masterpieces, this book draws out the common concerns of science and art and how they illuminate each other.

Content

The emergence of a reductionist school of abstract art in New York -- The Beginning of a Scientific Approach to Art -- The Biology of the Beholder's Share: Visual Perception and Bottom-Up Processing in Art -- The Biology of Learning and Memory: Top-Down Processing in Art -- A Reductionist Approach to Art. Reductionism in the Emergence of Abstract Art -- Mondrian and the Radical Reduction of the Figurative Image -- The New York School of Painters -- How the Brain Processes and Perceives Abstract Images -- From Figuration to Color Abstraction -- Color and the Brain -- A Focus on Light -- A Reductionist Influence on Figuration -- The Emerging Dialogue Between Abstract Art and Science. Why Is Reductionism Successful in Art? -- A Return to the Two Cultures

Date

14. 6.2019 12:22:37

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Source

http://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=5&ved=0CDQQFjAE&url=http%3A%2F%2Fdigbib.ubka.uni-karlsruhe.de%2Fvolltexte%2Fdocuments%2F3131107&ei=HzFWVYvGMsiNsgGTyoFI&usg=AFQjCNE2FHUeR9oQTQlNC4TPedv4Mo3DaQ&sig2=Rlzpr7a3BLZZkqZCXXN_IA&bvm=bv.93564037,d.bGg&cad=rja

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Abstract

The focus of this research is to clarify the role of the phenomenon in perception and its relationship with the cognition viewpoints, and, more broadly, knowledge organization. I will explain how the phenomena relate to the interoperability and natural connection between phenomena and knowledge. Finally, I will demonstrate the importance of the semantic elements.

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Content

Inhalt: Acknowledgments; Abstract; Zusammenfassung; Contents; List of Figures; List of Tables; List of Acronyms; Chapter 1 Introduction ; 1.1 Research Questions; 1.2 Thesis Outline; Part I Fundamentals ; Chapter 2 Information Retrieval for Young Users ; 2.1 Basics of Information Retrieval; 2.1.1 Architecture of an IR System; 2.1.2 Relevance Ranking; 2.1.3 Search User Interfaces; 2.1.4 Targeted Search Engines; 2.2 Aspects of Child Development Relevant for Information Retrieval Tasks; 2.2.1 Human Cognitive Development; 2.2.2 Information Processing Theory; 2.2.3 Psychosocial Development 2.3 User Studies and Evaluation2.3.1 Methods in User Studies; 2.3.2 Types of Evaluation; 2.3.3 Evaluation with Children; 2.4 Discussion; Chapter 3 State of the Art ; 3.1 Children's Information-Seeking Behaviour; 3.1.1 Querying Behaviour; 3.1.2 Search Strategy; 3.1.3 Navigation Style; 3.1.4 User Interface; 3.1.5 Relevance Judgement; 3.2 Existing Algorithms and User Interface Concepts for Children; 3.2.1 Query; 3.2.2 Content; 3.2.3 Ranking; 3.2.4 Search Result Visualisation; 3.3 Existing Information Retrieval Systems for Children; 3.3.1 Digital Book Libraries; 3.3.2 Web Search Engines 3.4 Summary and DiscussionPart II Studying Open Issues ; Chapter 4 Usability of Existing Search Engines for Young Users ; 4.1 Assessment Criteria; 4.1.1 Criteria for Matching the Motor Skills; 4.1.2 Criteria for Matching the Cognitive Skills; 4.2 Results; 4.2.1 Conformance with Motor Skills; 4.2.2 Conformance with the Cognitive Skills; 4.2.3 Presentation of Search Results; 4.2.4 Browsing versus Searching; 4.2.5 Navigational Style; 4.3 Summary and Discussion; Chapter 5 Large-scale Analysis of Children's Queries and Search Interactions; 5.1 Dataset; 5.2 Results; 5.3 Summary and Discussion Chapter 6 Differences in Usability and Perception of Targeted Web Search Engines between Children and Adults 6.1 Related Work; 6.2 User Study; 6.3 Study Results; 6.4 Summary and Discussion; Part III Tackling the Challenges ; Chapter 7 Search User Interface Design for Children ; 7.1 Conceptual Challenges and Possible Solutions; 7.2 Knowledge Journey Design; 7.3 Evaluation; 7.3.1 Study Design; 7.3.2 Study Results; 7.4 Voice-Controlled Search: Initial Study; 7.4.1 User Study; 7.5 Summary and Discussion; Chapter 8 Addressing User Diversity ; 8.1 Evolving Search User Interface 8.1.1 Mapping Function8.1.2 Evolving Skills; 8.1.3 Detection of User Abilities; 8.1.4 Design Concepts; 8.2 Adaptation of a Search User Interface towards User Needs; 8.2.1 Design & Implementation; 8.2.2 Search Input; 8.2.3 Result Output; 8.2.4 General Properties; 8.2.5 Configuration and Further Details; 8.3 Evaluation; 8.3.1 Study Design; 8.3.2 Study Results; 8.3.3 Preferred UI Settings; 8.3.4 User satisfaction; 8.4 Knowledge Journey Exhibit; 8.4.1 Hardware; 8.4.2 Frontend; 8.4.3 Backend; 8.5 Summary and Discussion; Chapter 9 Supporting Visual Searchers in Processing Search Results 9.1 Related Work

Date

1. 2.2016 18:25:22

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Abstract

It is widely accepted that subject indexing of an image is based on a two-dimensional approach. The first is the ofness and the second focuses on aboutness of the image. Assigning a suitable set of subject tags based on these two groups depends, to a great deal, on users' perception of the image. This study aims at analyzing users' perception of aboutness and ofness of images. 25 in-depth semi-structured interviews were conducted in two phases. In the first phase a collection of 10 widely known photographs were given to the interviewees and they were asked to assign subject tags (as many as they wanted) to each image. In the second phase some facts regarding each image were given to him / her to assign further tags (again as many as they wanted) or even modify their previous tags. The results show that the interviewees do focus both on ofness and aboutness in subject tagging; but it seems that they emphasize more on aboutness in describing images. On the other hand, as soon as the interviewees were able to distinguish the iconographical ofness, they could speak of iconographical and iconological aboutness. The results also show that subject indexers must focus on the iconographical level, especially regarding those tags which represent the ofness at this level.

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Abstract

Knowledge contributing has long been identified as a bottleneck in knowledge management since individuals tend to believe that their contributing would not be worth the effort, given high levels of expectation to receive some value in return. Self-perception theory posits that individuals come to "know" their own internal beliefs by inferring them partially from observations of their own overt behavior. Building on self-perception theory and adhering to the principle that the relationship between behavior and beliefs is one of mutual influence, we develop a research model to explore the behavioral transfer from knowledge seeking to knowledge contributing and consider the mediating effect of intrinsic motivation. Data collected from 430 users of Web 2.0 applications were used to test the model. The mediating role of intrinsic motivation between knowledge seeking and knowledge contributing is confirmed. These findings and their implications for theory and practice are discussed.

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Footnote

Rez. in: Philosophisch-ethische Rezensionen vom 09.11.2019 (Jürgen Czogalla), Unter: https://philosophisch-ethische-rezensionen.de/rezension/Goedert1.html. In: B.I.T. online 23(2020) H.3, S.345-347 (W. Sühl-Strohmenger) [Unter: https%3A%2F%2Fwww.b-i-t-online.de%2Fheft%2F2020-03-rezensionen.pdf&usg=AOvVaw0iY3f_zNcvEjeZ6inHVnOK]. In: Open Password Nr. 805 vom 14.08.2020 (H.-C. Hobohm) [Unter: https://www.password-online.de/?mailpoet_router&endpoint=view_in_browser&action=view&data=WzE0MywiOGI3NjZkZmNkZjQ1IiwwLDAsMTMxLDFd].

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Abstract

Emotional meaning is critical for users to retrieve relevant images. However, because emotional meanings are subject to the individual viewer's interpretation, they are considered difficult to implement when designing image retrieval systems. With the intent of making an image's emotional messages more readily accessible, this study aims to test a new approach designed to enhance the accessibility of emotional meanings during the image search process. This approach utilizes image searchers' emotional reactions, which are quantitatively measured. Broadly used quantitative measurements for emotional reactions, Semantic Differential (SD) and Self-Assessment Manikin (SAM), were selected as tools for gathering users' reactions. Emotional representations obtained from these two tools were compared with three image perception tasks: searching, describing, and sorting. A survey questionnaire with a set of 12 images was administered to 58 participants, which were tagged with basic emotions. Results demonstrated that the SAM represents basic emotions on 2-dimensional plots (pleasure and arousal dimensions), and this representation consistently corresponded to the three image perception tasks. This study provided experimental evidence that quantitative users' reactions can be a useful complementary element of current image retrieval/indexing systems. Integrating users' reactions obtained from the SAM into image browsing systems would reduce the efforts of human indexers as well as improve the effectiveness of image retrieval systems.

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Abstract

Purpose - The purpose of this paper is to examine the information-seeking behavior of science and social science research scholars, including service effectiveness, satisfaction level on different type of sources and various methods adopted by the scholars for keeping up to date. Design/methodology/approach - Data were gathered using a questionnaire survey of 200, randomly selected, PhD students of science and social science departments of four universities in Kerala, India. Findings - Although similarities exist between social science and science PhD students with regard to information-seeking behavior, there are significant differences as well. There is a significant difference between science and social science scholars on the perception of the adequacy of print journals and database collection which are very relevant to the research purposes. There is no significant difference between science and social science scholars on the perception of the adequacy of e-journals, the most used source for keeping up to date. The study proved that scholars of both the fields are dissatisfied with the effectiveness of the library in keeping them up to date with latest developments. Originality/value - The study is based on actual situation and the result can be used for library service redesign for different types of users.

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Abstract

Serendipity is not an easy word to define. Its meaning has been stretched to apply to experiences ranging from the mundane to the exceptional. Serendipity, however, is consistently associated with unexpected and positive personal, scholarly, scientific, organizational, and societal events and discoveries. Diverse serendipitous experiences share a conceptual space; therefore, what lessons can we draw from an exploration of how serendipity unfolds and what may influence it? This article describes an investigation of work-related serendipity. Twelve professionals and academics from a variety of fields were interviewed. The core of the semi-structured interviews focused on participants' own work-related experiences that could be recalled and discussed in depth. This research validated and augmented prior research while consolidating previous models of serendipity into a single model of the process of serendipity, consisting of: Trigger, Connection, Follow-up, and Valuable Outcome, and an Unexpected Thread that runs through 1 or more of the first 4 elements. Together, the elements influence the Perception of Serendipity. Furthermore, this research identified what factors relating to the individual and their environment may facilitate the main elements of serendipity and further influence its perception.

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Abstract

The objective of this paper is to describe, on behalf of social network, elements which allow for identification of possible activity that can present potentially harmful effects to users' privacy, executed by either internal or external agents. To achieve this, the Taxonomy of Privacy was used to establish a way to categorize these possible actions found in terms of use, focusing on current guidelines set about issues related with gathering and storing personal data to increase users' perception about privacy issues. The universe of research was delimited to the study from the three prominent social networks at the time. The results are divided into two parts: the first part tries to identify evidence of activity withpotential to be harmful to privacy through a linkage of characteristics from excerpts of the terms of use with concepts found of taxonomy; and the second shows comparisons between classifications made possible by taxonomy and their level of occurrence in terms of use studied. It was concluded that applying an appropriate taxonomy can help with the study of terms of use, enabling a perception of potential harmful activities under those terms. Also, it allows new proposals of applications of this methodology in other contexts.

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Abstract

Information sources require consumers to use them in order to evaluate their quality, meaning that they are experience goods. The value perceived before acquisition and use may be different from the value obtained by actual use. Understanding the value perception gap is likely to inform more efficient selection of information sources. The current research studies the value gap in a learning situation. We examine information value perceptions before and after experiencing information in an experiment with 113 software engineers engaged in a problem-based learning task while using and evaluating three types of information sources: supportive, reflective and reciprocal. The results indicate that before using an information source, the subjective value for supportive information is lower than for reflective information. In addition, 55% of the participants preferred to obtain information when presented with a choice. After using an information source no correlation was observed between perceived value of information before and after the use of information source (value gap); participants assigned a higher user experience (UX) value to reflective and reciprocal information than to supportive information; positive correlation between UX value and revealed information value; positive correlation between learning achievement and revealed information value; Reciprocal information is associated with higher learning achievement than reflective and supportive; use of information led to higher learning achievement than avoidance of information. Reciprocal information supports high achievement in software engineering informal learning. Reflective information is valued higher than supportive information sources. If supportive information is essential, learning environments designers should invest heavily in interface design combining reciprocal and reflective elements, such as forums and "try it yourself", respectively

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Abstract

This study analyzes conceptual aspects of the principle of semantic warrant in knowledge organization through the study of language. This analysis resorts to the perception of language as a phenomenon of social activity related to the views of Mikhail Bakhtin and Ludwig Wittgenstein. From the authors' pragmatic concept of language, it seeks to update the possibility of understanding the principle of semantic warrant to address the shortcomings of theoretical reflection on this topic, especially in the wake of the emergence of web information phenomena.