Search (6 results, page 1 of 1)

0.028946966 = product of:
  0.057893932 = sum of:
    0.057893932 = product of:
      0.115787864 = sum of:
        0.115787864 = weight(_text_:22 in 4840) [ClassicSimilarity], result of:
          0.115787864 = score(doc=4840,freq=4.0), product of:
            0.17634645 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.050358377 = queryNorm
            0.6565931 = fieldWeight in 4840, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.09375 = fieldNorm(doc=4840)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date

22. 2.2003 17:25:39
22. 2.2003 18:13:11

0.028946966 = product of:
  0.057893932 = sum of:
    0.057893932 = product of:
      0.115787864 = sum of:
        0.115787864 = weight(_text_:22 in 1359) [ClassicSimilarity], result of:
          0.115787864 = score(doc=1359,freq=4.0), product of:
            0.17634645 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.050358377 = queryNorm
            0.6565931 = fieldWeight in 1359, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.09375 = fieldNorm(doc=1359)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date

22. 2.2003 17:25:39
22. 2.2003 18:20:07

0.017767247 = product of:
  0.035534494 = sum of:
    0.035534494 = product of:
      0.14213797 = sum of:
        0.14213797 = weight(_text_:author's in 2213) [ClassicSimilarity], result of:
          0.14213797 = score(doc=2213,freq=4.0), product of:
            0.338416 = queryWeight, product of:
              6.7201533 = idf(docFreq=144, maxDocs=44218)
              0.050358377 = queryNorm
            0.42000958 = fieldWeight in 2213, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              6.7201533 = idf(docFreq=144, maxDocs=44218)
              0.03125 = fieldNorm(doc=2213)
      0.25 = coord(1/4)
  0.5 = coord(1/2)

Footnote

Rez. in: JASIST 55(2004) no.4, S.363-365 (J.W. Schneider): "Theories and methods for mapping scientific frontiers have existed for decades-especially within quantitative studies of science. This book investigates mapping scientific frontiers from the perspective of visual thinking and visual exploration (visual communication). The central theme is construction of visual-spatial representations that may convey insights into the dynamic structure of scientific frontiers. The author's previous book, Information Visualisation and Virtual Environments (1999), also concerns some of the ideas behind and possible benefits of visual communication. This new book takes a special focus an knowledge visualization, particularly in relation to science literature. The book is not a technical tutorial as the focus is an principles of visual communication and ways that may reveal the dynamics of scientific frontiers. The new approach to science mapping presented is the culmination of different approaches from several disciplines, such as philosophy of science, information retrieval, scientometrics, domain analysis, and information visualization. The book therefore addresses an audience with different disciplinary backgrounds and tries to stimulate interdisciplinary research. Chapter 1, The Growth of Scientific Knowledge, introduces a range of examples that illustrate fundamental issues concerning visual communication in general and science mapping in particular. Chapter 2, Mapping the Universe, focuses an the basic principles of cartography for visual communication. Chapter 3, Mapping the Mind, turns the attention inward and explores the design of mind maps, maps that represent our thoughts, experience, and knowledge. Chapter 4, Enabling Techniques for Science Mapping, essentially outlines the author's basic approach to science mapping.

0.0132585475 = product of:
  0.026517095 = sum of:
    0.026517095 = product of:
      0.05303419 = sum of:
        0.05303419 = weight(_text_:f in 2275) [ClassicSimilarity], result of:
          0.05303419 = score(doc=2275,freq=2.0), product of:
            0.20071772 = queryWeight, product of:
              3.985786 = idf(docFreq=2232, maxDocs=44218)
              0.050358377 = queryNorm
            0.26422277 = fieldWeight in 2275, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.985786 = idf(docFreq=2232, maxDocs=44218)
              0.046875 = fieldNorm(doc=2275)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

0.01104879 = product of:
  0.02209758 = sum of:
    0.02209758 = product of:
      0.04419516 = sum of:
        0.04419516 = weight(_text_:f in 4603) [ClassicSimilarity], result of:
          0.04419516 = score(doc=4603,freq=2.0), product of:
            0.20071772 = queryWeight, product of:
              3.985786 = idf(docFreq=2232, maxDocs=44218)
              0.050358377 = queryNorm
            0.22018565 = fieldWeight in 4603, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.985786 = idf(docFreq=2232, maxDocs=44218)
              0.0390625 = fieldNorm(doc=4603)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Abstract

This article presents 2 studies concerning the role of individual differences in searching through a spatial-semantic virtual environment. In the first study, 10 subjects searched for 2 topics through a spatial user interface of a semantic space. A strong positive correlation was found between associative memory (MA-1) and search performance (r=0,855, p=0,003) but no significant correlation was found between visual memory (MV-1) and search performance. In the secon study, 12 subjects participated in a within-subject experimental design. The same spatial user interface and a simple textual user interface were used. The effects of spatial ability (VZ-2), associative memory (MA-1), and on-line experience were tested on a set of interrelated search performance scores. A statistically significant main effect of on-line experience was found, F(6,4)=6,213, p=0,049, two-tailed. In particular, on-line experience has a significant effect on the recall scores with the textual interface. Individuals experienced in on-line esearch are more likely to have a higher recall score with the textual interface than less experienced individuals. No significant main effects were found for spatial ability and associative memory. Subjects' comments suggest a potentially complex interplay between individuals' mental models and the high-dimensional semantic model. Qualitative and process-oriented studies are, therefore, called for to reveal the complex interaction between individuals' cognitive abilities, doamin knowledge, and direct manipulation skills. A recommendation is made that spatial-semantic models should be adaptable to suit individuals and tasks at various levels

0.008528581 = product of:
  0.017057162 = sum of:
    0.017057162 = product of:
      0.034114324 = sum of:
        0.034114324 = weight(_text_:22 in 5272) [ClassicSimilarity], result of:
          0.034114324 = score(doc=5272,freq=2.0), product of:
            0.17634645 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.050358377 = queryNorm
            0.19345059 = fieldWeight in 5272, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5272)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date

22. 7.2006 16:11:05