Search (7 results, page 1 of 1)

  • × author_ss:"Järvelin, K."
  1. Tuomaala, O.; Järvelin, K.; Vakkari, P.: Evolution of library and information science, 1965-2005 : content analysis of journal articles (2014) 0.02
    0.020019764 = product of:
      0.08007906 = sum of:
        0.08007906 = weight(_text_:communication in 1309) [ClassicSimilarity], result of:
          0.08007906 = score(doc=1309,freq=6.0), product of:
            0.19382635 = queryWeight, product of:
              4.317879 = idf(docFreq=1601, maxDocs=44218)
              0.04488925 = queryNorm
            0.41314846 = fieldWeight in 1309, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              4.317879 = idf(docFreq=1601, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1309)
      0.25 = coord(1/4)
    
    Abstract
    This article first analyzes library and information science (LIS) research articles published in core LIS journals in 2005. It also examines the development of LIS from 1965 to 2005 in light of comparable data sets for 1965, 1985, and 2005. In both cases, the authors report (a) how the research articles are distributed by topic and (b) what approaches, research strategies, and methods were applied in the articles. In 2005, the largest research areas in LIS by this measure were information storage and retrieval, scientific communication, library and information-service activities, and information seeking. The same research areas constituted the quantitative core of LIS in the previous years since 1965. Information retrieval has been the most popular area of research over the years. The proportion of research on library and information-service activities decreased after 1985, but the popularity of information seeking and of scientific communication grew during the period studied. The viewpoint of research has shifted from library and information organizations to end users and development of systems for the latter. The proportion of empirical research strategies was high and rose over time, with the survey method being the single most important method. However, attention to evaluation and experiments increased considerably after 1985. Conceptual research strategies and system analysis, description, and design were quite popular, but declining. The most significant changes from 1965 to 2005 are the decreasing interest in library and information-service activities and the growth of research into information seeking and scientific communication.
  2. Vakkari, P.; Chang, Y.-W.; Järvelin, K.: Disciplinary contributions to research topics and methodology in Library and Information Science : leading to fragmentation? (2022) 0.02
    0.016346069 = product of:
      0.065384276 = sum of:
        0.065384276 = weight(_text_:communication in 767) [ClassicSimilarity], result of:
          0.065384276 = score(doc=767,freq=4.0), product of:
            0.19382635 = queryWeight, product of:
              4.317879 = idf(docFreq=1601, maxDocs=44218)
              0.04488925 = queryNorm
            0.3373343 = fieldWeight in 767, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.317879 = idf(docFreq=1601, maxDocs=44218)
              0.0390625 = fieldNorm(doc=767)
      0.25 = coord(1/4)
    
    Abstract
    The study analyses contributions to Library and Information Science (LIS) by researchers representing various disciplines. How are such contributions associated with the choice of research topics and methodology? The study employs a quantitative content analysis of articles published in 31 scholarly LIS journals in 2015. Each article is seen as a contribution to LIS by the authors' disciplines, which are inferred from their affiliations. The unit of analysis is the article-discipline pair. Of the contribution instances, the share of LIS is one third. Computer Science contributes one fifth and Business and Economics one sixth. The latter disciplines dominate the contributions in information retrieval, information seeking, and scientific communication indicating strong influences in LIS. Correspondence analysis reveals three clusters of research, one focusing on traditional LIS with contributions from LIS and Humanities and survey-type research; another on information retrieval with contributions from Computer Science and experimental research; and the third on scientific communication with contributions from Natural Sciences and Medicine and citation analytic research. The strong differentiation of scholarly contributions in LIS hints to the fragmentation of LIS as a discipline.
  3. Järvelin, K.; Vakkari, P.: LIS research across 50 years: content analysis of journal articles : offering an information-centric conception of memes (2022) 0.01
    0.011558416 = product of:
      0.046233665 = sum of:
        0.046233665 = weight(_text_:communication in 949) [ClassicSimilarity], result of:
          0.046233665 = score(doc=949,freq=2.0), product of:
            0.19382635 = queryWeight, product of:
              4.317879 = idf(docFreq=1601, maxDocs=44218)
              0.04488925 = queryNorm
            0.23853138 = fieldWeight in 949, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.317879 = idf(docFreq=1601, maxDocs=44218)
              0.0390625 = fieldNorm(doc=949)
      0.25 = coord(1/4)
    
    Abstract
    Purpose This paper analyses the research in Library and Information Science (LIS) and reports on (1) the status of LIS research in 2015 and (2) on the evolution of LIS research longitudinally from 1965 to 2015. Design/methodology/approach The study employs a quantitative intellectual content analysis of articles published in 30+ scholarly LIS journals, following the design by Tuomaala et al. (2014). In the content analysis, we classify articles along eight dimensions covering topical content and methodology. Findings The topical findings indicate that the earlier strong LIS emphasis on L&I services has declined notably, while scientific and professional communication has become the most popular topic. Information storage and retrieval has given up its earlier strong position towards the end of the years analyzed. Individuals are increasingly the units of observation. End-user's and developer's viewpoints have strengthened at the cost of intermediaries' viewpoint. LIS research is methodologically increasingly scattered since survey, scientometric methods, experiment, case studies and qualitative studies have all gained in popularity. Consequently, LIS may have become more versatile in the analysis of its research objects during the years analyzed. Originality/value Among quantitative intellectual content analyses of LIS research, the study is unique in its scope: length of analysis period (50 years), width (8 dimensions covering topical content and methodology) and depth (the annual batch of 30+ scholarly journals).
  4. Järvelin, K.; Kristensen, J.; Niemi, T.; Sormunen, E.; Keskustalo, H.: ¬A deductive data model for query expansion (1996) 0.00
    0.0045614047 = product of:
      0.018245619 = sum of:
        0.018245619 = product of:
          0.036491238 = sum of:
            0.036491238 = weight(_text_:22 in 2230) [ClassicSimilarity], result of:
              0.036491238 = score(doc=2230,freq=2.0), product of:
                0.1571945 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04488925 = queryNorm
                0.23214069 = fieldWeight in 2230, 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=2230)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Source
    Proceedings of the 19th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (ACM SIGIR '96), Zürich, Switzerland, August 18-22, 1996. Eds.: H.P. Frei et al
  5. Saastamoinen, M.; Järvelin, K.: Search task features in work tasks of varying types and complexity (2017) 0.00
    0.0045614047 = product of:
      0.018245619 = sum of:
        0.018245619 = product of:
          0.036491238 = sum of:
            0.036491238 = weight(_text_:22 in 3589) [ClassicSimilarity], result of:
              0.036491238 = score(doc=3589,freq=2.0), product of:
                0.1571945 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04488925 = queryNorm
                0.23214069 = fieldWeight in 3589, 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=3589)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Abstract
    Information searching in practice seldom is an end in itself. In work, work task (WT) performance forms the context, which information searching should serve. Therefore, information retrieval (IR) systems development/evaluation should take the WT context into account. The present paper analyzes how WT features: task complexity and task types, affect information searching in authentic work: the types of information needs, search processes, and search media. We collected data on 22 information professionals in authentic work situations in three organization types: city administration, universities, and companies. The data comprise 286 WTs and 420 search tasks (STs). The data include transaction logs, video recordings, daily questionnaires, interviews. and observation. The data were analyzed quantitatively. Even if the participants used a range of search media, most STs were simple throughout the data, and up to 42% of WTs did not include searching. WT's effects on STs are not straightforward: different WT types react differently to WT complexity. Due to the simplicity of authentic searching, the WT/ST types in interactive IR experiments should be reconsidered.
  6. Näppilä, T.; Järvelin, K.; Niemi, T.: ¬A tool for data cube construction from structurally heterogeneous XML documents (2008) 0.00
    0.003801171 = product of:
      0.015204684 = sum of:
        0.015204684 = product of:
          0.030409368 = sum of:
            0.030409368 = weight(_text_:22 in 1369) [ClassicSimilarity], result of:
              0.030409368 = score(doc=1369,freq=2.0), product of:
                0.1571945 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04488925 = queryNorm
                0.19345059 = fieldWeight in 1369, 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=1369)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Date
    9. 2.2008 17:22:42
  7. Vakkari, P.; Järvelin, K.; Chang, Y.-W.: ¬The association of disciplinary background with the evolution of topics and methods in Library and Information Science research 1995-2015 (2023) 0.00
    0.003801171 = product of:
      0.015204684 = sum of:
        0.015204684 = product of:
          0.030409368 = sum of:
            0.030409368 = weight(_text_:22 in 998) [ClassicSimilarity], result of:
              0.030409368 = score(doc=998,freq=2.0), product of:
                0.1571945 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04488925 = queryNorm
                0.19345059 = fieldWeight in 998, 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=998)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Date
    22. 6.2023 18:15:06