Search (7 results, page 1 of 1)

  • × author_ss:"Chen, H."
  1. Carmel, E.; Crawford, S.; Chen, H.: Browsing in hypertext : a cognitive study (1992) 0.05 
    0.04789163 = product of:
  0.09578326 = sum of:
    0.09578326 = sum of:
      0.060998734 = weight(_text_:multimedia in 7469) [ClassicSimilarity], result of:
        0.060998734 = score(doc=7469,freq=2.0), product of:
          0.2381132 = queryWeight, product of:
            4.6372695 = idf(docFreq=1163, maxDocs=44218)
            0.051347714 = queryNorm
          0.25617537 = fieldWeight in 7469, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.6372695 = idf(docFreq=1163, maxDocs=44218)
            0.0390625 = fieldNorm(doc=7469)
      0.034784533 = weight(_text_:22 in 7469) [ClassicSimilarity], result of:
        0.034784533 = score(doc=7469,freq=2.0), product of:
          0.17981094 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.051347714 = queryNorm
          0.19345059 = fieldWeight in 7469, 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=7469)
  0.5 = coord(1/2)
    Abstract
    With the growth of hypertext and multimedia applications that support and encourage browsing it is time to take a penetrating look at browsing behaviour. Several dimensions of browsing are exemined, to find out: first, what is browsing and what cognitive processes are associated with it: second, is there a browsing strategy, and if so, are there any differences between how subject-area experts and novices browse; and finally, how can this knowledge be applied to improve the design of hypertext systems. Two groups of students, subject-area experts and novices, were studied while browsing a Macintosh HyperCard application on the subject The Vietnam War. A protocol analysis technique was used to gather and analyze data. Components of the GOMS model were used to describe the goals, operators, methods, and selection rules observed: Three browsing strategies were identified: (1) search-oriented browse, scanning and and reviewing information relevant to a fixed task; (2) review-browse, scanning and reviewing intersting information in the presence of transient browse goals that represent changing tasks, and (3) scan-browse, scanning for interesting information (without review). Most subjects primarily used review-browse interspersed with search-oriented browse. Within this strategy, comparisons between subject-area experts and novices revealed differences in tactics: experts browsed in more depth, seldom used referential links, selected different kinds of topics, and viewed information differently thatn did novices. Based on these findings, suggestions are made to hypertext developers
    Source
    IEEE transactions on systems, man and cybernetics. 22(1992) no.5, S.865-884
  2. Chen, H.: Semantic research for digital libraries (1999) 0.03 
    0.025879571 = product of:
  0.051759142 = sum of:
    0.051759142 = product of:
      0.103518285 = sum of:
        0.103518285 = weight(_text_:multimedia in 1247) [ClassicSimilarity], result of:
          0.103518285 = score(doc=1247,freq=4.0), product of:
            0.2381132 = queryWeight, product of:
              4.6372695 = idf(docFreq=1163, maxDocs=44218)
              0.051347714 = queryNorm
            0.434744 = fieldWeight in 1247, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.6372695 = idf(docFreq=1163, maxDocs=44218)
              0.046875 = fieldNorm(doc=1247)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    In this era of the Internet and distributed, multimedia computing, new and emerging classes of information systems applications have swept into the lives of office workers and people in general. From digital libraries, multimedia systems, geographic information systems, and collaborative computing to electronic commerce, virtual reality, and electronic video arts and games, these applications have created tremendous opportunities for information and computer science researchers and practitioners. As applications become more pervasive, pressing, and diverse, several well-known information retrieval (IR) problems have become even more urgent. Information overload, a result of the ease of information creation and transmission via the Internet and WWW, has become more troublesome (e.g., even stockbrokers and elementary school students, heavily exposed to various WWW search engines, are versed in such IR terminology as recall and precision). Significant variations in database formats and structures, the richness of information media (text, audio, and video), and an abundance of multilingual information content also have created severe information interoperability problems -- structural interoperability, media interoperability, and multilingual interoperability.
  3. Ramsey, M.C.; Chen, H.; Zhu, B.; Schatz, B.R.: ¬A collection of visual thesauri for browsing large collections of geographic images (1999) 0.02 
    0.021349557 = product of:
  0.042699113 = sum of:
    0.042699113 = product of:
      0.08539823 = sum of:
        0.08539823 = weight(_text_:multimedia in 3922) [ClassicSimilarity], result of:
          0.08539823 = score(doc=3922,freq=2.0), product of:
            0.2381132 = queryWeight, product of:
              4.6372695 = idf(docFreq=1163, maxDocs=44218)
              0.051347714 = queryNorm
            0.3586455 = fieldWeight in 3922, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.6372695 = idf(docFreq=1163, maxDocs=44218)
              0.0546875 = fieldNorm(doc=3922)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    Digital libraries of geo-spatial multimedia content are currently deficient in providing fuzzy, concept-based retrieval mechanisms to users. The main challenge is that indexing and thesaurus creation are extremely labor-intensive processes for text documents and especially for images. Recently, 800.000 declassified staellite photographs were made available by the US Geological Survey. Additionally, millions of satellite and aerial photographs are archived in national and local map libraries. Such enormous collections make human indexing and thesaurus generation methods impossible to utilize. In this article we propose a scalable method to automatically generate visual thesauri of large collections of geo-spatial media using fuzzy, unsupervised machine-learning techniques
  4. Chung, W.; Chen, H.: Browsing the underdeveloped Web : an experiment on the Arabic Medical Web Directory (2009) 0.01 
    0.010435359 = product of:
  0.020870717 = sum of:
    0.020870717 = product of:
      0.041741434 = sum of:
        0.041741434 = weight(_text_:22 in 2733) [ClassicSimilarity], result of:
          0.041741434 = score(doc=2733,freq=2.0), product of:
            0.17981094 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.051347714 = queryNorm
            0.23214069 = fieldWeight in 2733, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046875 = fieldNorm(doc=2733)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 3.2009 17:57:50
  5. Leroy, G.; Chen, H.: Genescene: an ontology-enhanced integration of linguistic and co-occurrence based relations in biomedical texts (2005) 0.01 
    0.008696133 = product of:
  0.017392267 = sum of:
    0.017392267 = product of:
      0.034784533 = sum of:
        0.034784533 = weight(_text_:22 in 5259) [ClassicSimilarity], result of:
          0.034784533 = score(doc=5259,freq=2.0), product of:
            0.17981094 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.051347714 = queryNorm
            0.19345059 = fieldWeight in 5259, 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=5259)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 7.2006 14:26:01
  6. Zheng, R.; Li, J.; Chen, H.; Huang, Z.: ¬A framework for authorship identification of online messages : writing-style features and classification techniques (2006) 0.01 
    0.008696133 = product of:
  0.017392267 = sum of:
    0.017392267 = product of:
      0.034784533 = sum of:
        0.034784533 = weight(_text_:22 in 5276) [ClassicSimilarity], result of:
          0.034784533 = score(doc=5276,freq=2.0), product of:
            0.17981094 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.051347714 = queryNorm
            0.19345059 = fieldWeight in 5276, 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=5276)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 7.2006 16:14:37
  7. Hu, D.; Kaza, S.; Chen, H.: Identifying significant facilitators of dark network evolution (2009) 0.01 
    0.008696133 = product of:
  0.017392267 = sum of:
    0.017392267 = product of:
      0.034784533 = sum of:
        0.034784533 = weight(_text_:22 in 2753) [ClassicSimilarity], result of:
          0.034784533 = score(doc=2753,freq=2.0), product of:
            0.17981094 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.051347714 = queryNorm
            0.19345059 = fieldWeight in 2753, 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=2753)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 3.2009 18:50:30

Authors

Years

Types

Themes