Search (35 results, page 1 of 2)

  • × author_ss:"Järvelin, K."
  1. 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) 0.03
    0.029562928 = product of:
      0.11086097 = sum of:
        0.015904883 = product of:
          0.031809766 = sum of:
            0.031809766 = weight(_text_:bibliothekswesen in 998) [ClassicSimilarity], result of:
              0.031809766 = score(doc=998,freq=2.0), product of:
                0.12917466 = queryWeight, product of:
                  4.457672 = idf(docFreq=1392, maxDocs=44218)
                  0.028978055 = queryNorm
                0.24625391 = fieldWeight in 998, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.457672 = idf(docFreq=1392, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=998)
          0.5 = coord(1/2)
        0.032484557 = weight(_text_:informationswissenschaft in 998) [ClassicSimilarity], result of:
          0.032484557 = score(doc=998,freq=2.0), product of:
            0.13053758 = queryWeight, product of:
              4.504705 = idf(docFreq=1328, maxDocs=44218)
              0.028978055 = queryNorm
            0.24885213 = fieldWeight in 998, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.504705 = idf(docFreq=1328, maxDocs=44218)
              0.0390625 = fieldNorm(doc=998)
        0.031809766 = weight(_text_:bibliothekswesen in 998) [ClassicSimilarity], result of:
          0.031809766 = score(doc=998,freq=2.0), product of:
            0.12917466 = queryWeight, product of:
              4.457672 = idf(docFreq=1392, maxDocs=44218)
              0.028978055 = queryNorm
            0.24625391 = fieldWeight in 998, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.457672 = idf(docFreq=1392, maxDocs=44218)
              0.0390625 = fieldNorm(doc=998)
        0.030661764 = sum of:
          0.01103113 = weight(_text_:information in 998) [ClassicSimilarity], result of:
            0.01103113 = score(doc=998,freq=10.0), product of:
              0.050870337 = queryWeight, product of:
                1.7554779 = idf(docFreq=20772, maxDocs=44218)
                0.028978055 = queryNorm
              0.21684799 = fieldWeight in 998, product of:
                3.1622777 = tf(freq=10.0), with freq of:
                  10.0 = termFreq=10.0
                1.7554779 = idf(docFreq=20772, maxDocs=44218)
                0.0390625 = fieldNorm(doc=998)
          0.019630633 = weight(_text_:22 in 998) [ClassicSimilarity], result of:
            0.019630633 = score(doc=998,freq=2.0), product of:
              0.101476215 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.028978055 = 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)
      0.26666668 = coord(4/15)
    
    Abstract
    The paper reports a longitudinal analysis of the topical and methodological development of Library and Information Science (LIS). Its focus is on the effects of researchers' disciplines on these developments. The study extends an earlier cross-sectional study (Vakkari et al., Journal of the Association for Information Science and Technology, 2022a, 73, 1706-1722) by a coordinated dataset representing a content analysis of articles published in 31 scholarly LIS journals in 1995, 2005, and 2015. It is novel in its coverage of authors' disciplines, topical and methodological aspects in a coordinated dataset spanning two decades thus allowing trend analysis. The findings include a shrinking trend in the share of LIS from 67 to 36% while Computer Science, and Business and Economics increase their share from 9 and 6% to 21 and 16%, respectively. The earlier cross-sectional study (Vakkari et al., Journal of the Association for Information Science and Technology, 2022a, 73, 1706-1722) for the year 2015 identified three topical clusters of LIS research, focusing on topical subfields, methodologies, and contributing disciplines. Correspondence analysis confirms their existence already in 1995 and traces their development through the decades. The contributing disciplines infuse their concepts, research questions, and approaches to LIS and may also subsume vital parts of LIS in their own structures of knowledge production.
    Date
    22. 6.2023 18:15:06
    Field
    Bibliothekswesen
    Informationswissenschaft
    Source
    Journal of the Association for Information Science and Technology. 74(2023) no.7, S.811-827
  2. Ingwersen, P.; Järvelin, K.: ¬The turn : integration of information seeking and retrieval in context (2005) 0.03
    0.025448434 = product of:
      0.095431626 = sum of:
        0.034604497 = weight(_text_:buch in 1323) [ClassicSimilarity], result of:
          0.034604497 = score(doc=1323,freq=8.0), product of:
            0.13472971 = queryWeight, product of:
              4.64937 = idf(docFreq=1149, maxDocs=44218)
              0.028978055 = queryNorm
            0.25684384 = fieldWeight in 1323, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              4.64937 = idf(docFreq=1149, maxDocs=44218)
              0.01953125 = fieldNorm(doc=1323)
        0.01885652 = weight(_text_:und in 1323) [ClassicSimilarity], result of:
          0.01885652 = score(doc=1323,freq=46.0), product of:
            0.06422601 = queryWeight, product of:
              2.216367 = idf(docFreq=13101, maxDocs=44218)
              0.028978055 = queryNorm
            0.29359633 = fieldWeight in 1323, product of:
              6.78233 = tf(freq=46.0), with freq of:
                46.0 = termFreq=46.0
              2.216367 = idf(docFreq=13101, maxDocs=44218)
              0.01953125 = fieldNorm(doc=1323)
        0.03631884 = weight(_text_:informationswissenschaft in 1323) [ClassicSimilarity], result of:
          0.03631884 = score(doc=1323,freq=10.0), product of:
            0.13053758 = queryWeight, product of:
              4.504705 = idf(docFreq=1328, maxDocs=44218)
              0.028978055 = queryNorm
            0.27822515 = fieldWeight in 1323, product of:
              3.1622777 = tf(freq=10.0), with freq of:
                10.0 = termFreq=10.0
              4.504705 = idf(docFreq=1328, maxDocs=44218)
              0.01953125 = fieldNorm(doc=1323)
        0.005651772 = product of:
          0.011303544 = sum of:
            0.011303544 = weight(_text_:information in 1323) [ClassicSimilarity], result of:
              0.011303544 = score(doc=1323,freq=42.0), product of:
                0.050870337 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.028978055 = queryNorm
                0.22220306 = fieldWeight in 1323, product of:
                  6.4807405 = tf(freq=42.0), with freq of:
                    42.0 = termFreq=42.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.01953125 = fieldNorm(doc=1323)
          0.5 = coord(1/2)
      0.26666668 = coord(4/15)
    
    Abstract
    The Turn analyzes the research of information seeking and retrieval (IS&R) and proposes a new direction of integrating research in these two areas: the fields should turn off their separate and narrow paths and construct a new avenue of research. An essential direction for this avenue is context as given in the subtitle Integration of Information Seeking and Retrieval in Context. Other essential themes in the book include: IS&R research models, frameworks and theories; search and works tasks and situations in context; interaction between humans and machines; information acquisition, relevance and information use; research design and methodology based on a structured set of explicit variables - all set into the holistic cognitive approach. The present monograph invites the reader into a construction project - there is much research to do for a contextual understanding of IS&R. The Turn represents a wide-ranging perspective of IS&R by providing a novel unique research framework, covering both individual and social aspects of information behavior, including the generation, searching, retrieval and use of information. Regarding traditional laboratory information retrieval research, the monograph proposes the extension of research toward actors, search and work tasks, IR interaction and utility of information. Regarding traditional information seeking research, it proposes the extension toward information access technology and work task contexts. The Turn is the first synthesis of research in the broad area of IS&R ranging from systems oriented laboratory IR research to social science oriented information seeking studies. TOC:Introduction.- The Cognitive Framework for Information.- The Development of Information Seeking Research.- Systems-Oriented Information Retrieval.- Cognitive and User-Oriented Information Retrieval.- The Integrated IS&R Research Framework.- Implications of the Cognitive Framework for IS&R.- Towards a Research Program.- Conclusion.- Definitions.- References.- Index.
    Field
    Informationswissenschaft
    Footnote
    Rez. in: Mitt. VÖB 59(2006) H.2, S.81-83 (O. Oberhauser): "Mit diesem Band haben zwei herausragende Vertreter der europäischen Informationswissenschaft, die Professoren Peter Ingwersen (Kopenhagen) und Kalervo Järvelin (Tampere) ein Werk vorgelegt, das man vielleicht dereinst als ihr opus magnum bezeichnen wird. Mich würde dies nicht überraschen, denn die Autoren unternehmen hier den ambitionierten Versuch, zwei informations wissenschaftliche Forschungstraditionen, die einander bisher in eher geringem Ausmass begegneten, unter einem gesamtheitlichen kognitiven Ansatz zu vereinen - das primär im sozialwissenschaftlichen Bereich verankerte Forschungsgebiet "Information Seeking and Retrieval" (IS&R) und das vorwiegend im Informatikbereich angesiedelte "Information Retrieval" (IR). Dabei geht es ihnen auch darum, den seit etlichen Jahren zwar dominierenden, aber auch als zu individualistisch kritisierten kognitiven Ansatz so zu erweitern, dass technologische, verhaltensbezogene und kooperative Aspekte in kohärenter Weise berücksichtigt werden. Dies geschieht auf folgende Weise in neun Kapiteln: - Zunächst werden die beiden "Lager" - die an Systemen und Laborexperimenten orientierte IR-Tradition und die an Benutzerfragen orientierte IS&R-Fraktion - einander gegenübergestellt und einige zentrale Begriffe geklärt. - Im zweiten Kapitel erfolgt eine ausführliche Darstellung der kognitiven Richtung der Informationswissenschaft, insbesondere hinsichtlich des Informationsbegriffes. - Daran schliesst sich ein Überblick über die bisherige Forschung zu "Information Seeking" (IS) - eine äusserst brauchbare Einführung in die Forschungsfragen und Modelle, die Forschungsmethodik sowie die in diesem Bereich offenen Fragen, z.B. die aufgrund der einseitigen Ausrichtung des Blickwinkels auf den Benutzer mangelnde Betrachtung der Benutzer-System-Interaktion. - In analoger Weise wird im vierten Kapitel die systemorientierte IRForschung in einem konzentrierten Überblick vorgestellt, in dem es sowohl um das "Labormodell" als auch Ansätze wie die Verarbeitung natürlicher Sprache und Expertensysteme geht. Aspekte wie Relevanz, Anfragemodifikation und Performanzmessung werden ebenso angesprochen wie die Methodik - von den ersten Laborexperimenten bis zu TREC und darüber hinaus.
    - Kapitel fünf enthält einen entsprechenden Überblick über die kognitive und benutzerorientierte IR-Tradition. Es zeigt, welche anderen (als nur die labororientierten) IR-Studien durchgeführt werden können, wobei sich die Betrachtung von frühen Modellen (z.B. Taylor) über Belkins ASK-Konzept bis zu Ingwersens Modell der Polyrepräsentation, und von Bates Berrypicking-Ansatz bis zu Vakkaris "taskbased" IR-Modell erstreckt. Auch Web-IR, OKAPI und Diskussionen zum Relevanzbegriff werden hier thematisiert. - Im folgenden Kapitel schlagen die Autoren ein integriertes IS&R Forschungsmodell vor, bei dem die vielfältigen Beziehungen zwischen Informationssuchenden, Systementwicklern, Oberflächen und anderen beteiligten Aspekten berücksichtigt werden. Ihr Ansatz vereint die traditionelle Laborforschung mit verschiedenen benutzerorientierten Traditionen aus IS&R, insbesondere mit den empirischen Ansätzen zu IS und zum interaktiven IR, in einem holistischen kognitiven Modell. - Kapitel sieben untersucht die Implikationen dieses Modells für IS&R, wobei besonders ins Auge fällt, wie komplex die Anfragen von Informationssuchenden im Vergleich mit der relativen Einfachheit der Algorithmen zum Auffinden relevanter Dokumente sind. Die Abbildung der vielfältig variierenden kognitiven Zustände der Anfragesteller im Rahmen der der Systementwicklung ist sicherlich keine triviale Aufgabe. Wie dabei das Problem der Einbeziehung des zentralen Aspektes der Bedeutung gelöst werden kann, sei dahingestellt. - Im achten Kapitel wird der Versuch unternommen, die zuvor diskutierten Punkte in ein IS&R-Forschungsprogramm (Prozesse - Verhalten - Systemfunktionalität - Performanz) umzusetzen, wobei auch einige kritische Anmerkungen zur bisherigen Forschungspraxis getroffen werden. - Das abschliessende neunte Kapitel fasst das Buch kurz zusammen und kann somit auch als Einstieg in dieThematik gelesen werden. Darauffolgen noch ein sehr nützliches Glossar zu allen wichtigen Begriffen, die in dem Buch Verwendung finden, eine Bibliographie und ein Sachregister. Ingwersen und Järvelin haben hier ein sehr anspruchsvolles und dennoch lesbares Buch vorgelegt. Die gebotenen Übersichtskapitel und Diskussionen sind zwar keine Einführung in die Informationswissenschaft, decken aber einen grossen Teil der heute in dieser Disziplin aktuellen und durch laufende Forschungsaktivitäten und Publikationen berührten Teilbereiche ab. Man könnte es auch - vielleicht ein wenig überspitzt - so formulieren: Was hier thematisiert wird, ist eigentlich die moderne Informationswissenschaft. Der Versuch, die beiden Forschungstraditionen zu vereinen, wird diesem Werk sicherlich einen Platz in der Geschichte der Disziplin sichern. Nicht ganz glücklich erscheint der Titel des Buches. "The Turn" soll eine Wende bedeuten, nämlich jene hin zu einer integrierten Sicht von IS und IR. Das geht vermutlich aus dem Untertitel besser hervor, doch dieser erschien den Autoren wohl zu trocken. Schade, denn "The Turn" gibt es z.B. in unserem Verbundkatalog bereits, allerdings mit dem Zusatz "from the Cold War to a new era; the United States and the Soviet Union 1983-1990". Der Verlag, der abgesehen davon ein gediegenes (wenn auch nicht gerade wohlfeiles) Produkt vorgelegt hat, hätte derlei unscharfe Duplizierend besser verhindert. Ungeachtet dessen empfehle ich dieses wichtige Buch ohne Vorbehalt zur Anschaffung; es sollte in keiner grösseren Bibliothek fehlen."
    Series
    The Kluwer international series on information retrieval ; 18
    Theme
    Information
  3. 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
    0.022997657 = product of:
      0.08624121 = sum of:
        0.015904883 = product of:
          0.031809766 = sum of:
            0.031809766 = weight(_text_:bibliothekswesen in 767) [ClassicSimilarity], result of:
              0.031809766 = score(doc=767,freq=2.0), product of:
                0.12917466 = queryWeight, product of:
                  4.457672 = idf(docFreq=1392, maxDocs=44218)
                  0.028978055 = queryNorm
                0.24625391 = fieldWeight in 767, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.457672 = idf(docFreq=1392, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=767)
          0.5 = coord(1/2)
        0.032484557 = weight(_text_:informationswissenschaft in 767) [ClassicSimilarity], result of:
          0.032484557 = score(doc=767,freq=2.0), product of:
            0.13053758 = queryWeight, product of:
              4.504705 = idf(docFreq=1328, maxDocs=44218)
              0.028978055 = queryNorm
            0.24885213 = fieldWeight in 767, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.504705 = idf(docFreq=1328, maxDocs=44218)
              0.0390625 = fieldNorm(doc=767)
        0.031809766 = weight(_text_:bibliothekswesen in 767) [ClassicSimilarity], result of:
          0.031809766 = score(doc=767,freq=2.0), product of:
            0.12917466 = queryWeight, product of:
              4.457672 = idf(docFreq=1392, maxDocs=44218)
              0.028978055 = queryNorm
            0.24625391 = fieldWeight in 767, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.457672 = idf(docFreq=1392, maxDocs=44218)
              0.0390625 = fieldNorm(doc=767)
        0.006041999 = product of:
          0.012083998 = sum of:
            0.012083998 = weight(_text_:information in 767) [ClassicSimilarity], result of:
              0.012083998 = score(doc=767,freq=12.0), product of:
                0.050870337 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.028978055 = queryNorm
                0.23754507 = fieldWeight in 767, product of:
                  3.4641016 = tf(freq=12.0), with freq of:
                    12.0 = termFreq=12.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=767)
          0.5 = coord(1/2)
      0.26666668 = coord(4/15)
    
    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.
    Field
    Bibliothekswesen
    Informationswissenschaft
    Source
    Journal of the Association for Information Science and Technology. 73(2022) no.12, S.1706-1722
  4. Järvelin, K.; Vakkari, P.: LIS research across 50 years: content analysis of journal articles : offering an information-centric conception of memes (2022) 0.02
    0.022525748 = product of:
      0.08447155 = sum of:
        0.015904883 = product of:
          0.031809766 = sum of:
            0.031809766 = weight(_text_:bibliothekswesen in 949) [ClassicSimilarity], result of:
              0.031809766 = score(doc=949,freq=2.0), product of:
                0.12917466 = queryWeight, product of:
                  4.457672 = idf(docFreq=1392, maxDocs=44218)
                  0.028978055 = queryNorm
                0.24625391 = fieldWeight in 949, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.457672 = idf(docFreq=1392, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=949)
          0.5 = coord(1/2)
        0.032484557 = weight(_text_:informationswissenschaft in 949) [ClassicSimilarity], result of:
          0.032484557 = score(doc=949,freq=2.0), product of:
            0.13053758 = queryWeight, product of:
              4.504705 = idf(docFreq=1328, maxDocs=44218)
              0.028978055 = queryNorm
            0.24885213 = fieldWeight in 949, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.504705 = idf(docFreq=1328, maxDocs=44218)
              0.0390625 = fieldNorm(doc=949)
        0.031809766 = weight(_text_:bibliothekswesen in 949) [ClassicSimilarity], result of:
          0.031809766 = score(doc=949,freq=2.0), product of:
            0.12917466 = queryWeight, product of:
              4.457672 = idf(docFreq=1392, maxDocs=44218)
              0.028978055 = queryNorm
            0.24625391 = fieldWeight in 949, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.457672 = idf(docFreq=1392, maxDocs=44218)
              0.0390625 = fieldNorm(doc=949)
        0.004272339 = product of:
          0.008544678 = sum of:
            0.008544678 = weight(_text_:information in 949) [ClassicSimilarity], result of:
              0.008544678 = score(doc=949,freq=6.0), product of:
                0.050870337 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.028978055 = queryNorm
                0.16796975 = fieldWeight in 949, product of:
                  2.4494898 = tf(freq=6.0), with freq of:
                    6.0 = termFreq=6.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=949)
          0.5 = coord(1/2)
      0.26666668 = coord(4/15)
    
    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).
    Field
    Bibliothekswesen
    Informationswissenschaft
  5. Tuomaala, O.; Järvelin, K.; Vakkari, P.: Evolution of library and information science, 1965-2005 : content analysis of journal articles (2014) 0.01
    0.005470565 = product of:
      0.041029237 = sum of:
        0.032484557 = weight(_text_:informationswissenschaft in 1309) [ClassicSimilarity], result of:
          0.032484557 = score(doc=1309,freq=2.0), product of:
            0.13053758 = queryWeight, product of:
              4.504705 = idf(docFreq=1328, maxDocs=44218)
              0.028978055 = queryNorm
            0.24885213 = fieldWeight in 1309, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              4.504705 = idf(docFreq=1328, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1309)
        0.008544678 = product of:
          0.017089356 = sum of:
            0.017089356 = weight(_text_:information in 1309) [ClassicSimilarity], result of:
              0.017089356 = score(doc=1309,freq=24.0), product of:
                0.050870337 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.028978055 = queryNorm
                0.3359395 = fieldWeight in 1309, product of:
                  4.8989797 = tf(freq=24.0), with freq of:
                    24.0 = termFreq=24.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=1309)
          0.5 = coord(1/2)
      0.13333334 = coord(2/15)
    
    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.
    Field
    Informationswissenschaft
    Source
    Journal of the Association for Information Science and Technology. 65(2014) no.7, S.1446-1462
  6. Saastamoinen, M.; Järvelin, K.: Search task features in work tasks of varying types and complexity (2017) 0.00
    0.0026146274 = product of:
      0.03921941 = sum of:
        0.03921941 = sum of:
          0.015662652 = weight(_text_:information in 3589) [ClassicSimilarity], result of:
            0.015662652 = score(doc=3589,freq=14.0), product of:
              0.050870337 = queryWeight, product of:
                1.7554779 = idf(docFreq=20772, maxDocs=44218)
                0.028978055 = queryNorm
              0.3078936 = fieldWeight in 3589, product of:
                3.7416575 = tf(freq=14.0), with freq of:
                  14.0 = termFreq=14.0
                1.7554779 = idf(docFreq=20772, maxDocs=44218)
                0.046875 = fieldNorm(doc=3589)
          0.023556758 = weight(_text_:22 in 3589) [ClassicSimilarity], result of:
            0.023556758 = score(doc=3589,freq=2.0), product of:
              0.101476215 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.028978055 = 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)
      0.06666667 = coord(1/15)
    
    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.
    Source
    Journal of the Association for Information Science and Technology. 68(2017) no.5, S.1111-1123
  7. Järvelin, K.; Kristensen, J.; Niemi, T.; Sormunen, E.; Keskustalo, H.: ¬A deductive data model for query expansion (1996) 0.00
    0.0019651123 = product of:
      0.029476684 = sum of:
        0.029476684 = sum of:
          0.005919926 = weight(_text_:information in 2230) [ClassicSimilarity], result of:
            0.005919926 = score(doc=2230,freq=2.0), product of:
              0.050870337 = queryWeight, product of:
                1.7554779 = idf(docFreq=20772, maxDocs=44218)
                0.028978055 = queryNorm
              0.116372846 = fieldWeight in 2230, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                1.7554779 = idf(docFreq=20772, maxDocs=44218)
                0.046875 = fieldNorm(doc=2230)
          0.023556758 = weight(_text_:22 in 2230) [ClassicSimilarity], result of:
            0.023556758 = score(doc=2230,freq=2.0), product of:
              0.101476215 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.028978055 = 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)
      0.06666667 = coord(1/15)
    
    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
  8. Näppilä, T.; Järvelin, K.; Niemi, T.: ¬A tool for data cube construction from structurally heterogeneous XML documents (2008) 0.00
    0.0017738222 = product of:
      0.026607333 = sum of:
        0.026607333 = sum of:
          0.0069766995 = weight(_text_:information in 1369) [ClassicSimilarity], result of:
            0.0069766995 = score(doc=1369,freq=4.0), product of:
              0.050870337 = queryWeight, product of:
                1.7554779 = idf(docFreq=20772, maxDocs=44218)
                0.028978055 = queryNorm
              0.13714671 = fieldWeight in 1369, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                1.7554779 = idf(docFreq=20772, maxDocs=44218)
                0.0390625 = fieldNorm(doc=1369)
          0.019630633 = weight(_text_:22 in 1369) [ClassicSimilarity], result of:
            0.019630633 = score(doc=1369,freq=2.0), product of:
              0.101476215 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.028978055 = 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)
      0.06666667 = coord(1/15)
    
    Abstract
    Data cubes for OLAP (On-Line Analytical Processing) often need to be constructed from data located in several distributed and autonomous information sources. Such a data integration process is challenging due to semantic, syntactic, and structural heterogeneity among the data. While XML (extensible markup language) is the de facto standard for data exchange, the three types of heterogeneity remain. Moreover, popular path-oriented XML query languages, such as XQuery, require the user to know in much detail the structure of the documents to be processed and are, thus, effectively impractical in many real-world data integration tasks. Several Lowest Common Ancestor (LCA)-based XML query evaluation strategies have recently been introduced to provide a more structure-independent way to access XML documents. We shall, however, show that this approach leads in the context of certain - not uncommon - types of XML documents to undesirable results. This article introduces a novel high-level data extraction primitive that utilizes the purpose-built Smallest Possible Context (SPC) query evaluation strategy. We demonstrate, through a system prototype for OLAP data cube construction and a sample application in informetrics, that our approach has real advantages in data integration.
    Date
    9. 2.2008 17:22:42
    Source
    Journal of the American Society for Information Science and Technology. 59(2008) no.3, S.435-449
  9. Järvelin, K.; Vakkari, P.: ¬The evolution of library and information science 1965-1985 : a content analysis of journal titles (1993) 0.00
    6.511586E-4 = product of:
      0.009767379 = sum of:
        0.009767379 = product of:
          0.019534757 = sum of:
            0.019534757 = weight(_text_:information in 4649) [ClassicSimilarity], result of:
              0.019534757 = score(doc=4649,freq=4.0), product of:
                0.050870337 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.028978055 = queryNorm
                0.3840108 = fieldWeight in 4649, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.109375 = fieldNorm(doc=4649)
          0.5 = coord(1/2)
      0.06666667 = coord(1/15)
    
    Source
    Information processing and management. 29(1993) no.1, S.129-144
  10. Pirkola, A.; Hedlund, T.; Keskustalo, H.; Järvelin, K.: Dictionary-based cross-language information retrieval : problems, methods, and research findings (2001) 0.00
    6.511586E-4 = product of:
      0.009767379 = sum of:
        0.009767379 = product of:
          0.019534757 = sum of:
            0.019534757 = weight(_text_:information in 3908) [ClassicSimilarity], result of:
              0.019534757 = score(doc=3908,freq=4.0), product of:
                0.050870337 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.028978055 = queryNorm
                0.3840108 = fieldWeight in 3908, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.109375 = fieldNorm(doc=3908)
          0.5 = coord(1/2)
      0.06666667 = coord(1/15)
    
    Source
    Information retrieval. 4(2001), S.209-230
  11. Hansen, P.; Järvelin, K.: Collaborative Information Retrieval in an information-intensive domain (2005) 0.00
    5.9199263E-4 = product of:
      0.008879889 = sum of:
        0.008879889 = product of:
          0.017759778 = sum of:
            0.017759778 = weight(_text_:information in 1040) [ClassicSimilarity], result of:
              0.017759778 = score(doc=1040,freq=18.0), product of:
                0.050870337 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.028978055 = queryNorm
                0.34911853 = fieldWeight in 1040, product of:
                  4.2426405 = tf(freq=18.0), with freq of:
                    18.0 = termFreq=18.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.046875 = fieldNorm(doc=1040)
          0.5 = coord(1/2)
      0.06666667 = coord(1/15)
    
    Abstract
    In this article we investigate the expressions of collaborative activities within information seeking and retrieval processes (IS&R). Generally, information seeking and retrieval is regarded as an individual and isolated process in IR research. We assume that an IS&R situation is not merely an individual effort, but inherently involves various collaborative activities. We present empirical results from a real-life and information-intensive setting within the patent domain, showing that the patent task performance process involves highly collaborative aspects throughout the stages of the information seeking and retrieval process. Furthermore, we show that these activities may be categorised and related to different stages in an information seeking and retrieval process. Therefore, the assumption that information retrieval performance is purely individual needs to be reconsidered. Finally, we also propose a refined IR framework involving collaborative aspects.
    Source
    Information processing and management. 41(2005) no.5, S.1101-1120
  12. Niemi, T.; Junkkari, M.; Järvelin, K.; Viita, S.: Advanced query language for manipulating complex entities (2004) 0.00
    4.604387E-4 = product of:
      0.00690658 = sum of:
        0.00690658 = product of:
          0.01381316 = sum of:
            0.01381316 = weight(_text_:information in 4218) [ClassicSimilarity], result of:
              0.01381316 = score(doc=4218,freq=2.0), product of:
                0.050870337 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.028978055 = queryNorm
                0.27153665 = fieldWeight in 4218, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.109375 = fieldNorm(doc=4218)
          0.5 = coord(1/2)
      0.06666667 = coord(1/15)
    
    Source
    Information processing and management. 40(2004) no.6, S.869-
  13. Järvelin, K.: Evaluation (2011) 0.00
    4.604387E-4 = product of:
      0.00690658 = sum of:
        0.00690658 = product of:
          0.01381316 = sum of:
            0.01381316 = weight(_text_:information in 548) [ClassicSimilarity], result of:
              0.01381316 = score(doc=548,freq=2.0), product of:
                0.050870337 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.028978055 = queryNorm
                0.27153665 = fieldWeight in 548, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.109375 = fieldNorm(doc=548)
          0.5 = coord(1/2)
      0.06666667 = coord(1/15)
    
    Source
    Interactive information seeking, behaviour and retrieval. Eds.: Ruthven, I. u. D. Kelly
  14. Vakkari, P.; Järvelin, K.: Explanation in information seeking and retrieval (2005) 0.00
    4.5571616E-4 = product of:
      0.006835742 = sum of:
        0.006835742 = product of:
          0.013671484 = sum of:
            0.013671484 = weight(_text_:information in 643) [ClassicSimilarity], result of:
              0.013671484 = score(doc=643,freq=24.0), product of:
                0.050870337 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.028978055 = queryNorm
                0.2687516 = fieldWeight in 643, product of:
                  4.8989797 = tf(freq=24.0), with freq of:
                    24.0 = termFreq=24.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.03125 = fieldNorm(doc=643)
          0.5 = coord(1/2)
      0.06666667 = coord(1/15)
    
    Abstract
    Information Retrieval (IR) is a research area both within Computer Science and Information Science. It has by and large two communities: a Computer Science oriented experimental approach and a user-oriented Information Science approach with a Social Science background. The communities hold a critical stance towards each other (e.g., Ingwersen, 1996), the latter suspecting the realism of the former, and the former suspecting the usefulness of the latter. Within Information Science the study of information seeking (IS) also has a Social Science background. There is a lot of research in each of these particular areas of information seeking and retrieval (IS&R). However, the three communities do not really communicate with each other. Why is this, and could the relationships be otherwise? Do the communities in fact belong together? Or perhaps each community is better off forgetting about the existence of the other two? We feel that the relationships between the research areas have not been properly analyzed. One way to analyze the relationships is to examine what each research area is trying to find out: which phenomena are being explained and how. We believe that IS&R research would benefit from being analytic about its frameworks, models and theories, not just at the level of meta-theories, but also much more concretely at the level of study designs. Over the years there have been calls for more context in the study of IS&R. Work tasks as well as cultural activities/interests have been proposed as the proper context for information access. For example, Wersig (1973) conceptualized information needs from the tasks perspective. He argued that in order to learn about information needs and seeking, one needs to take into account the whole active professional role of the individuals being investigated. Byström and Järvelin (1995) analysed IS processes in the light of tasks of varying complexity. Ingwersen (1996) discussed the role of tasks and their descriptions and problematic situations from a cognitive perspective on IR. Most recently, Vakkari (2003) reviewed task-based IR and Järvelin and Ingwersen (2004) proposed the extension of IS&R research toward the task context. Therefore there is much support to the task context, but how should it be applied in IS&R?
    Series
    The information retrieval series, vol. 19
    Source
    New directions in cognitive information retrieval. Eds.: A. Spink, C. Cole
  15. Järvelin, K.; Ingwersen, P.: User-oriented and cognitive models of information retrieval (2009) 0.00
    3.987516E-4 = product of:
      0.005981274 = sum of:
        0.005981274 = product of:
          0.011962548 = sum of:
            0.011962548 = weight(_text_:information in 3901) [ClassicSimilarity], result of:
              0.011962548 = score(doc=3901,freq=6.0), product of:
                0.050870337 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.028978055 = queryNorm
                0.23515764 = fieldWeight in 3901, product of:
                  2.4494898 = tf(freq=6.0), with freq of:
                    6.0 = termFreq=6.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=3901)
          0.5 = coord(1/2)
      0.06666667 = coord(1/15)
    
    Abstract
    The domain of user-oriented and cognitive information retrieval (IR) is first discussed, followed by a discussion on the dimensions and types of models one may build for the domain. The focus of the present entry is on the models of user-oriented and cognitive IR, not on their empirical applications. Several models with different emphases on user-oriented and cognitive IR are presented-ranging from overall approaches and relevance models to procedural models, cognitive models, and task-based models. The present entry does not discuss empirical findings based on the models.
    Source
    Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates
  16. Järvelin, K.: ¬An analysis of two approaches in information retrieval : from frameworks to study designs (2007) 0.00
    3.9466174E-4 = product of:
      0.005919926 = sum of:
        0.005919926 = product of:
          0.011839852 = sum of:
            0.011839852 = weight(_text_:information in 326) [ClassicSimilarity], result of:
              0.011839852 = score(doc=326,freq=8.0), product of:
                0.050870337 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.028978055 = queryNorm
                0.23274569 = fieldWeight in 326, product of:
                  2.828427 = tf(freq=8.0), with freq of:
                    8.0 = termFreq=8.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.046875 = fieldNorm(doc=326)
          0.5 = coord(1/2)
      0.06666667 = coord(1/15)
    
    Abstract
    There is a well-known gap between systems-oriented information retrieval (IR) and user-oriented IR, which cognitive IR seeks to bridge. It is therefore interesting to analyze approaches at the level of frameworks, models, and study designs. This article is an exercise in such an analysis, focusing on two significant approaches to IR: the lab IR approach and P. Ingwersen's (1996) cognitive IR approach. The article focuses on their research frameworks, models, hypotheses, laws and theories, study designs, and possible contributions. The two approaches are quite different, which becomes apparent in the use of Independent, controlled, and dependent variables in the study designs of each approach. Thus, each approach is capable of contributing very differently to understanding and developing information access. The article also discusses integrating the approaches at the study-design level.
    Source
    Journal of the American Society for Information Science and Technology. 58(2007) no.7, S.971-986
  17. Järvelin, K.; Niemi, T.: Deductive information retrieval based on classifications (1993) 0.00
    3.9466174E-4 = product of:
      0.005919926 = sum of:
        0.005919926 = product of:
          0.011839852 = sum of:
            0.011839852 = weight(_text_:information in 2229) [ClassicSimilarity], result of:
              0.011839852 = score(doc=2229,freq=8.0), product of:
                0.050870337 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.028978055 = queryNorm
                0.23274569 = fieldWeight in 2229, product of:
                  2.828427 = tf(freq=8.0), with freq of:
                    8.0 = termFreq=8.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2229)
          0.5 = coord(1/2)
      0.06666667 = coord(1/15)
    
    Abstract
    Modern fact databses contain abundant data classified through several classifications. Typically, users msut consult these classifications in separate manuals or files, thus making their effective use difficult. Contemporary database systems do little support deductive use of classifications. In this study we show how deductive data management techniques can be applied to the utilization of data value classifications. Computation of transitive class relationships is of primary importance here. We define a representation of classifications which supports transitive computation and present an operation-oriented deductive query language tailored for classification-based deductive information retrieval. The operations of this language are on the same abstraction level as relational algebra operations and can be integrated with these to form a powerful and flexible query language for deductive information retrieval. We define the integration of these operations and demonstrate the usefulness of the language in terms of several sample queries
    Source
    Journal of the American Society for Information Science. 44(1993) no.10, S.557-578
  18. Pharo, N.; Järvelin, K.: ¬The SST method : a tool for analysing Web information search processes (2004) 0.00
    3.6770437E-4 = product of:
      0.005515565 = sum of:
        0.005515565 = product of:
          0.01103113 = sum of:
            0.01103113 = weight(_text_:information in 2533) [ClassicSimilarity], result of:
              0.01103113 = score(doc=2533,freq=10.0), product of:
                0.050870337 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.028978055 = queryNorm
                0.21684799 = fieldWeight in 2533, product of:
                  3.1622777 = tf(freq=10.0), with freq of:
                    10.0 = termFreq=10.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=2533)
          0.5 = coord(1/2)
      0.06666667 = coord(1/15)
    
    Abstract
    The article presents the search situation transition (SST) method for analysing Web information search (WIS) processes. The idea of the method is to analyse searching behaviour, the process, in detail and connect both the searchers' actions (captured in a log) and his/her intentions and goals, which log analysis never captures. On the other hand, ex post factor surveys, while popular in WIS research, cannot capture the actual search processes. The method is presented through three facets: its domain, its procedure, and its justification. The method's domain is presented in the form of a conceptual framework which maps five central categories that influence WIS processes; the searcher, the social/organisational environment, the work task, the search task, and the process itself. The method's procedure includes various techniques for data collection and analysis. The article presents examples from real WIS processes and shows how the method can be used to identify the interplay of the categories during the processes. It is shown that the method presents a new approach in information seeking and retrieval by focusing on the search process as a phenomenon and by explicating how different information seeking factors directly affect the search process.
    Source
    Information processing and management. 40(2004) no.4, S.633-654
  19. Kumpulainen, S.; Järvelin, K.: Barriers to task-based information access in molecular medicine (2012) 0.00
    3.6770437E-4 = product of:
      0.005515565 = sum of:
        0.005515565 = product of:
          0.01103113 = sum of:
            0.01103113 = weight(_text_:information in 4965) [ClassicSimilarity], result of:
              0.01103113 = score(doc=4965,freq=10.0), product of:
                0.050870337 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.028978055 = queryNorm
                0.21684799 = fieldWeight in 4965, product of:
                  3.1622777 = tf(freq=10.0), with freq of:
                    10.0 = termFreq=10.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=4965)
          0.5 = coord(1/2)
      0.06666667 = coord(1/15)
    
    Abstract
    We analyze barriers to task-based information access in molecular medicine, focusing on research tasks, which provide task performance sessions of varying complexity. Molecular medicine is a relevant domain because it offers thousands of digital resources as the information environment. Data were collected through shadowing of real work tasks. Thirty work task sessions were analyzed and barriers in these identified. The barriers were classified by their character (conceptual, syntactic, and technological) and by their context of appearance (work task, system integration, or system). Also, work task sessions were grouped into three complexity classes and the frequency of barriers of varying types across task complexity levels were analyzed. Our findings indicate that although most of the barriers are on system level, there is a quantum of barriers in integration and work task contexts. These barriers might be overcome through attention to the integrated use of multiple systems at least for the most frequent uses. This can be done by means of standardization and harmonization of the data and by taking the requirements of the work tasks into account in system design and development, because information access is seldom an end itself, but rather serves to reach the goals of work tasks.
    Source
    Journal of the American Society for Information Science and Technology. 63(2012) no.1, S.86-97
  20. Halttunen, K.; Järvelin, K.: Assessing learning outcomes in two information retrieval learning environments (2005) 0.00
    3.4178712E-4 = product of:
      0.0051268064 = sum of:
        0.0051268064 = product of:
          0.010253613 = sum of:
            0.010253613 = weight(_text_:information in 996) [ClassicSimilarity], result of:
              0.010253613 = score(doc=996,freq=6.0), product of:
                0.050870337 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.028978055 = queryNorm
                0.20156369 = fieldWeight in 996, product of:
                  2.4494898 = tf(freq=6.0), with freq of:
                    6.0 = termFreq=6.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.046875 = fieldNorm(doc=996)
          0.5 = coord(1/2)
      0.06666667 = coord(1/15)
    
    Abstract
    In order to design information retrieval (IR) learning environments and instruction, it is important to explore learning outcomes of different pedagogical solutions. Learning outcomes have seldom been evaluated in IR instruction. The particular focus of this study is the assessment of learning outcomes in an experimental, but naturalistic, learning environment compared to more traditional instruction. The 57 participants of an introductory course on IR were selected for this study, and the analysis illustrates their learning outcomes regarding both conceptual change and development of IR skill. Concept mapping of student essays was used to analyze conceptual change and log-files of search exercises provided data for performance assessment. Students in the experimental learning environment changed their conceptions more regarding linguistic aspects of IR and paid more emphasis on planning and management of search process. Performance assessment indicates that anchored instruction and scaffolding with an instructional tool, the IR Game, with performance feedback enables students to construct queries with fewer semantic knowledge errors also in operational IR systems.
    Source
    Information processing and management. 41(2005) no.4, S.949-972