-
Pennanen, M.; Vakkari, P.: Students' conceptual structure, search process, and outcome while preparing a research proposal : a longitudinal case study (2003)
0.02
0.023569375 = product of:
0.04713875 = sum of:
0.04713875 = sum of:
0.0030080476 = weight(_text_:s in 1682) [ClassicSimilarity], result of:
0.0030080476 = score(doc=1682,freq=2.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.060061958 = fieldWeight in 1682, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=1682)
0.0441307 = weight(_text_:22 in 1682) [ClassicSimilarity], result of:
0.0441307 = score(doc=1682,freq=4.0), product of:
0.16130796 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046063907 = queryNorm
0.27358043 = fieldWeight in 1682, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=1682)
0.5 = coord(1/2)
- Abstract
- This article focuses an analysing students' information needs in terms of conceptual understanding of the topic they propose to study and its consequences for the search process and outcome. The research subjects were 22 undergraduates of psychology attending a seminar for preparing a research proposal for a small empirical study. They were asked to make searches in the PsycINFO database for their task in the beginning and end of the seminar. A pre- and postsearch interview was conducted in both sessions. The students were asked to think aloud in the sessions. This was recorded, as were the transaction logs. The results show that during the preparation of research proposals different features of the students' conceptual structure were connected to the search success. Students' ability to cover their conceptual construct by query terms was the major feature affecting search success during the whole process. In the beginning also the number of concepts and the proportion of subconcepts in the construct contributed indirectly via search tactics to retrieving partly useful references. Students' ability to extract new query terms from retrieved items improved search results.
- Date
- 19. 6.2003 17:22:33
- Source
- Journal of the American Society for Information Science and technology. 54(2003) no.8, S.759-770
-
Vakkari, P.; Pennanen, M.; Serola, S.: Changes of search terms and tactics while writing a research proposal : a longitudinal case study (2003)
0.02
0.017729571 = product of:
0.035459142 = sum of:
0.035459142 = sum of:
0.0042540217 = weight(_text_:s in 1073) [ClassicSimilarity], result of:
0.0042540217 = score(doc=1073,freq=4.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.08494043 = fieldWeight in 1073, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=1073)
0.03120512 = weight(_text_:22 in 1073) [ClassicSimilarity], result of:
0.03120512 = score(doc=1073,freq=2.0), product of:
0.16130796 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046063907 = queryNorm
0.19345059 = fieldWeight in 1073, 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=1073)
0.5 = coord(1/2)
- Abstract
- The study analyses how students' growing understanding of the topic and search experience were related to their choice of search tactics and terms while preparing a research proposal for a small empirical study. In addition to that, the findings of the study are used to test Vakkari's (2001) theory of task-based IR. The research subjects were 22 students of psychology attending a seminar for preparing the proposal. They made a search for their task in PsychINFO database at the beginning and end of the seminar. Data were collected in several ways. A pre- and post-search interview was conducted in both sessions. The students were asked to think aloud in the sessions. This was recorded as were the transaction logs. The results show that search experience was slightly related to the change of facets. Although the students' vocabulary of the topic grew generating an increased use of specific terms between the sessions, their use of search tactics and operators remained fairly constant. There was no correlation between the terms and tactics used and the total number of useful references found. By comparing these results with the findings of relevant earlier studies the conclusion was drawn that domain knowledge has an impact on searching assuming that users have a sufficient command of the system used. This implies that the tested theory of task-based IR is valid on condition that the searchers are experienced. It is suggested that the theory should be enriched by including search experience in its scope.
- Source
- Information processing and management. 39(2003) no.3, S.445-463
-
Wu, I.-C.; Vakkari, P.: Effects of subject-oriented visualization tools on search by novices and intermediates (2018)
0.02
0.017106583 = product of:
0.034213167 = sum of:
0.034213167 = sum of:
0.0030080476 = weight(_text_:s in 4573) [ClassicSimilarity], result of:
0.0030080476 = score(doc=4573,freq=2.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.060061958 = fieldWeight in 4573, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=4573)
0.03120512 = weight(_text_:22 in 4573) [ClassicSimilarity], result of:
0.03120512 = score(doc=4573,freq=2.0), product of:
0.16130796 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046063907 = queryNorm
0.19345059 = fieldWeight in 4573, 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=4573)
0.5 = coord(1/2)
- Date
- 9.12.2018 16:22:25
- Source
- Journal of the Association for Information Science and Technology. 69(2018) no.12, S.1428-1445
-
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)
0.02
0.017106583 = product of:
0.034213167 = sum of:
0.034213167 = sum of:
0.0030080476 = weight(_text_:s in 998) [ClassicSimilarity], result of:
0.0030080476 = score(doc=998,freq=2.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.060061958 = fieldWeight in 998, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=998)
0.03120512 = weight(_text_:22 in 998) [ClassicSimilarity], result of:
0.03120512 = score(doc=998,freq=2.0), product of:
0.16130796 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.046063907 = 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)
- Date
- 22. 6.2023 18:15:06
- Source
- Journal of the Association for Information Science and Technology. 74(2023) no.7, S.811-827
-
Järvelin, K.; Vakkari, P.: ¬The evolution of library and information science 1965-1985 : a content analysis of journal titles (1993)
0.00
0.0021056333 = product of:
0.0042112665 = sum of:
0.0042112665 = product of:
0.008422533 = sum of:
0.008422533 = weight(_text_:s in 4649) [ClassicSimilarity], result of:
0.008422533 = score(doc=4649,freq=2.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.16817348 = fieldWeight in 4649, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.109375 = fieldNorm(doc=4649)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Information processing and management. 29(1993) no.1, S.129-144
-
Vakkari, P.; Jones, S.; MacFarlane, A.; Sormunen, E.: Query exhaustivity, relevance feedback and search success in automatic and interactive query expansion (2004)
0.00
0.0012762066 = product of:
0.0025524131 = sum of:
0.0025524131 = product of:
0.0051048263 = sum of:
0.0051048263 = weight(_text_:s in 4435) [ClassicSimilarity], result of:
0.0051048263 = score(doc=4435,freq=4.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.101928525 = fieldWeight in 4435, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=4435)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of documentation. 60(2004) no.2, S.109-127
-
Vakkari, P.: Information seeking in context : a challenging metatheory (1997)
0.00
0.001203219 = product of:
0.002406438 = sum of:
0.002406438 = product of:
0.004812876 = sum of:
0.004812876 = weight(_text_:s in 302) [ClassicSimilarity], result of:
0.004812876 = score(doc=302,freq=2.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.09609913 = fieldWeight in 302, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=302)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Pages
- S.451-464
-
Serola, S.; Vakkari, P.: ¬The anticipated and assessed contribution of information types in references retrieved for preparing a research proposal (2005)
0.00
0.0010635054 = product of:
0.0021270108 = sum of:
0.0021270108 = product of:
0.0042540217 = sum of:
0.0042540217 = weight(_text_:s in 3328) [ClassicSimilarity], result of:
0.0042540217 = score(doc=3328,freq=4.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.08494043 = fieldWeight in 3328, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=3328)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of the American Society for Information Science and Technology. 56(2005) no.4, S.373-381
-
Talja, S.; Vakkari, P.; Fry, J.; Wouters, P.: Impact of research cultures on the use of digital library resources (2007)
0.00
0.0010635054 = product of:
0.0021270108 = sum of:
0.0021270108 = product of:
0.0042540217 = sum of:
0.0042540217 = weight(_text_:s in 590) [ClassicSimilarity], result of:
0.0042540217 = score(doc=590,freq=4.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.08494043 = fieldWeight in 590, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=590)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of the American Society for Information Science and Technology. 58(2007) no.11, S.1674-1685
-
Vakkari, P.; Huuskonen, S.: Search effort degrades search output but improves task outcome (2012)
0.00
0.0010635054 = product of:
0.0021270108 = sum of:
0.0021270108 = product of:
0.0042540217 = sum of:
0.0042540217 = weight(_text_:s in 46) [ClassicSimilarity], result of:
0.0042540217 = score(doc=46,freq=4.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.08494043 = fieldWeight in 46, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=46)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of the American Society for Information Science and Technology. 63(2012) no.4, S.657-670
-
Vakkari, P.; Kuokkanen, M.: Theory growth in information science : applications of the theory of science to a theory of information seeking (1997)
0.00
0.0010528166 = product of:
0.0021056333 = sum of:
0.0021056333 = product of:
0.0042112665 = sum of:
0.0042112665 = weight(_text_:s in 4710) [ClassicSimilarity], result of:
0.0042112665 = score(doc=4710,freq=2.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.08408674 = fieldWeight in 4710, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0546875 = fieldNorm(doc=4710)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of documentation. 53(1997) no.5, S.497-519
-
Vakkari, P.; Sormunen, E.: ¬The influence of relevance levels an the effectiveness of interactive information retrieval (2004)
0.00
9.0241426E-4 = product of:
0.0018048285 = sum of:
0.0018048285 = product of:
0.003609657 = sum of:
0.003609657 = weight(_text_:s in 2884) [ClassicSimilarity], result of:
0.003609657 = score(doc=2884,freq=2.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.072074346 = fieldWeight in 2884, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=2884)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of the American Society for Information Science and Technology. 55(2004) no.11, S.963-969
-
Vakkari, P.: Task-based information searching (2002)
0.00
9.0241426E-4 = product of:
0.0018048285 = sum of:
0.0018048285 = product of:
0.003609657 = sum of:
0.003609657 = weight(_text_:s in 4288) [ClassicSimilarity], result of:
0.003609657 = score(doc=4288,freq=2.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.072074346 = fieldWeight in 4288, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=4288)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Annual review of information science and technology. 37(2003), S.413-464
-
Vakkari, P.: ¬A theory of the task-based information retrieval process : a summary and generalisation of a longitudinal study (2001)
0.00
9.0241426E-4 = product of:
0.0018048285 = sum of:
0.0018048285 = product of:
0.003609657 = sum of:
0.003609657 = weight(_text_:s in 4493) [ClassicSimilarity], result of:
0.003609657 = score(doc=4493,freq=2.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.072074346 = fieldWeight in 4493, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=4493)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of documentation. 57(2001) no.1, S.44-60
-
Vakkari, P.: Perceived influence of the use of electronic information resources on scholarly work and publication productivity (2008)
0.00
9.0241426E-4 = product of:
0.0018048285 = sum of:
0.0018048285 = product of:
0.003609657 = sum of:
0.003609657 = weight(_text_:s in 1380) [ClassicSimilarity], result of:
0.003609657 = score(doc=1380,freq=2.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.072074346 = fieldWeight in 1380, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=1380)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of the American Society for Information Science and Technology. 59(2008) no.4, S.602-612
-
Eerola, J.; Vakkari, P.: How a general and a specific thesaurus cover expressions in patients' questions and physicians' answers (2008)
0.00
9.0241426E-4 = product of:
0.0018048285 = sum of:
0.0018048285 = product of:
0.003609657 = sum of:
0.003609657 = weight(_text_:s in 1732) [ClassicSimilarity], result of:
0.003609657 = score(doc=1732,freq=2.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.072074346 = fieldWeight in 1732, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=1732)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of documentation. 64(2008) no.1, S.131-142
-
Numminen, P.; Vakkari, P.: Question types in public libraries' digital reference service in Finland : comparing 1999 and 2006 (2009)
0.00
9.0241426E-4 = product of:
0.0018048285 = sum of:
0.0018048285 = product of:
0.003609657 = sum of:
0.003609657 = weight(_text_:s in 2850) [ClassicSimilarity], result of:
0.003609657 = score(doc=2850,freq=2.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.072074346 = fieldWeight in 2850, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=2850)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of the American Society for Information Science and Technology. 60(2009) no.6, S.1249-1257
-
Huuskonen, S.; Vakkari, P.: Students' search process and outcome in Medline in writing an essay for a class on evidence-based medicine (2008)
0.00
8.508044E-4 = product of:
0.0017016088 = sum of:
0.0017016088 = product of:
0.0034032175 = sum of:
0.0034032175 = weight(_text_:s in 1891) [ClassicSimilarity], result of:
0.0034032175 = score(doc=1891,freq=4.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.06795235 = fieldWeight in 1891, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.03125 = fieldNorm(doc=1891)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of documentation. 64(2008) no.2, S.287-303
-
Vakkari, P.: Task complexity, information types, search strategies and relevance : integrating studies on information retrieval and seeking (1999)
0.00
7.520119E-4 = product of:
0.0015040238 = sum of:
0.0015040238 = product of:
0.0030080476 = sum of:
0.0030080476 = weight(_text_:s in 299) [ClassicSimilarity], result of:
0.0030080476 = score(doc=299,freq=2.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.060061958 = fieldWeight in 299, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=299)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Pages
- S.35-54
-
Sihvonen, A.; Vakkari, P.: Subject knowledge improves interactive query expansion assisted by a thesaurus (2004)
0.00
7.520119E-4 = product of:
0.0015040238 = sum of:
0.0015040238 = product of:
0.0030080476 = sum of:
0.0030080476 = weight(_text_:s in 4417) [ClassicSimilarity], result of:
0.0030080476 = score(doc=4417,freq=2.0), product of:
0.05008241 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046063907 = queryNorm
0.060061958 = fieldWeight in 4417, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=4417)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of documentation. 60(2004) no.6, S.673-690
