-
Shiri, A.A.; Revie, C.: Query expansion behavior within a thesaurus-enhanced search environment : a user-centered evaluation (2006)
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- Abstract
- The study reported here investigated the query expansion behavior of end-users interacting with a thesaurus-enhanced search system on the Web. Two groups, namely academic staff and postgraduate students, were recruited into this study. Data were collected from 90 searches performed by 30 users using the OVID interface to the CAB abstracts database. Data-gathering techniques included questionnaires, screen capturing software, and interviews. The results presented here relate to issues of search-topic and search-term characteristics, number and types of expanded queries, usefulness of thesaurus terms, and behavioral differences between academic staff and postgraduate students in their interaction. The key conclusions drawn were that (a) academic staff chose more narrow and synonymous terms than did postgraduate students, who generally selected broader and related terms; (b) topic complexity affected users' interaction with the thesaurus in that complex topics required more query expansion and search term selection; (c) users' prior topic-search experience appeared to have a significant effect on their selection and evaluation of thesaurus terms; (d) in 50% of the searches where additional terms were suggested from the thesaurus, users stated that they had not been aware of the terms at the beginning of the search; this observation was particularly noticeable in the case of postgraduate students.
- Date
- 22. 7.2006 16:32:43
-
Vogt, R.: "Es wurde keine Treffermenge gefunden" (1999)
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- Source
- ProLibris. 4(1999) H.2, S.90-94
-
Haarala, A.-R.: Online catalogue SESAM at Tampere University of Technology Library (1991)
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- Source
- OPACs and the user: Proc. of the 3rd Anglo-Nordic seminar, Apr. 90
-
Söderholm, G.: OPAC user study : Stockholm University Library (1991)
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- Source
- OPACs and the user: Proc. of the 3rd Anglo-Nordic seminar, Apr. 90
-
Ballard, T.: Comparative searching styles of patrons and staff (1994)
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- Abstract
- 3 months of transaction records from the INNOPAC online catalogue, at Adelphi University, New York, were examined. Patron searchers rely on the standard access points of subject, title, and author for nearly 90% of their searches. Library employees search by title nearly 50% of the time. Title searching predominated among technical services staff as well as public service staff. Approximately 30% of staff searches and 40% of patron searches retrieved no records. Patrons were 10 times more likely than staff to make a search resulting in 500 or more hits
-
Read, J.: 'What do you want?' : a question academic libraries should be asking their users (1997)
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- Source
- Assistant librarian. 90(1997) no.9, S.130-132
-
Kohlstädt, K.: Schüler suchen im Netz : Eine exemplarische Erhebung zu Erfahrungen und Problemen von Jugendlichen bei der Internetrecherche für schulische Zwecke (2004)
0.03
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- Abstract
- Nach Einführungen zu Jugend und Internet, Medienkompetenz und Lernen durch Medien, wird im praktischen Teil eine schriftliche Umfrage unter 90 Schülern eines Gymnasiums und einer Gesamtschule über deren Internetnutzung für schulische Zwecke analysiert. Suchpraxis, Einbindung des Internets in den schulischen Alltag, Unterschiede bei Geschlechtern und Schulformen werden besonders untersucht. Die Auswertung ergibt selbstbewußte Grundeinstellung der Schüler zum Internet, eher privat als schulisch genutzt, geschätzt wegen Schnelligkeit, Informationsmenge und Spaßfaktor bei Fixierung auf die Suchmaschine Google. Die Schüler geben sich meistens mit den gefundenen Ergebnissen zufrieden, stellen deren Qualität nicht weiter in Frage.
-
Marchionini, G.; Xia, L.; Dwiggins, S.: Efforts of search and subject expertise on information seeking in a hypertext environment (1990)
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- Source
- ASIS'90: Information in the year 2000, from research to applications. Proc. of the 53rd Annual Meeting of the American Society for Information Science, Toronto, Canada, 4.-8.11.1990. Ed. by Diana Henderson
-
Wood, F.; Ford, N.; Walsh, C.: ¬The effect of postings information on search behaviour (1994)
0.02
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- Abstract
- How postings information is used for inverted file searching was investigated by comparing searches, made by postgraduate students at the Dept. of Information Studies, of the LISA database on CD-ROM with and without postings information. Performance (the number of relevant references, precision and recall) was not significantly different but searches with postings information took more time, and more sets were viewed, than in searches without postings. Postings information was used to make decisions to narrow or broaden the search; to view or print the references. The same techniques were used to amend searches whether or not postings information was available. Users decided that a search was satisfactory on the basis of the search results, and consequently many searches done without postings were still considered satisfactory. However, searchers thought that the lack of postings information had affected 90% of their searches. Differences in search performance and searching behaviour were found in participants who were shown to have different learning styles using the Witkin's Embedded Figures test and the Lancaster Short Inventory of Approaches to Learning Test. These differences were, in part, explained by the differences in behaviour indicated by their learning styles
-
Woods, F.; Walsh, C.; Ford, N.: Effects of postings information on user searching behaviour (1994)
0.02
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- Abstract
- Reports results of an investigation, undertaken at Sheffield University, Departmant of Information Studies, UK into the effects of postings information (the display on the screen of the number of references in the retrieved sets) on searching behaviour. Linked online searches were conducted, on the LISA database on CD-ROM, with and without postings information. Performance in terms of the number of relevant references, precision and recall was not significantly different whether postings information was available or not; but searches with postings information took more time and more sets were viewed than in searches without postings. Searchers thought that the lack of postings information had affected 90% of their searches. Proposes that training should place greater emphasis on the value of postings information at different stages of the search and should optimize the searching behaviour of those with different searching styles
-
Shiri, A.A.; Revie, C.: End-user interaction with thesauri : an evaluation of cognitive overlap in search term selection (2004)
0.02
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- Abstract
- The use of thesaurus-enhanced search tools is an the increase. This paper provides an insight into end-users interaction with and perceptions of such tools. In particular the overlap between users' initial query formulation and thesaurus structures is investigated. This investigation involved the performance of genuine search tasks an the CAB Abstracts database by academic users in the domain of veterinary medicine. The perception of these users regarding the nature and usefulness of the terms suggested from the thesaurus during the search interaction is reported. The results indicated that around 80% of terms entered were matched either exactly or partially to thesaurus terms. Users found over 90% of the terms suggested to be close to their search topics and where terms were selected they indicated that around 50% were to support a 'narrowing down' activity. These findings have implications for the design of thesaurus-enhanced interfaces.
-
Yee, K.-P.; Swearingen, K.; Li, K.; Hearst, M.: Faceted metadata for image search and browsing
0.02
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- Abstract
- There are currently two dominant interface types for searching and browsing large image collections: keywordbased search, and searching by overall similarity to sample images. We present an alternative based on enabling users to navigate along conceptual dimensions that describe the images. The interface makes use of hierarchical faceted metadata and dynamically generated query previews. A usability study, in which 32 art history students explored a collection of 35,000 fine arts images, compares this approach to a standard image search interface. Despite the unfamiliarity and power of the interface (attributes that often lead to rejection of new search interfaces), the study results show that 90% of the participants preferred the metadata approach overall, 97% said that it helped them learn more about the collection, 75% found it more flexible, and 72% found it easier to use than a standard baseline system. These results indicate that a category-based approach is a successful way to provide access to image collections.
-
Scholle, U.: Kann ich Ihnen behilflich sein? : Erhebung am zentralen Auskunftsplatz der ULB Münster (2000)
0.02
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- Date
- 22. 1.2000 17:52:11
-
Branch, J.L.: Investigating the information-seeking process of adolescents : the value of using think alouds and think afters (2000)
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- Source
- Library and information science research. 22(2000) no.4, S.371-382
-
Yoo, E.-Y.; Robbins, L.S.: Understanding middle-aged women's health information seeking on the web : a theoretical approach (2008)
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- Date
- 9. 2.2008 17:52:22
-
Tang, R.; Solomon, P.: Use of relevance criteria across stages of document evaluation : on the complementarity of experimental and naturalistic studies (2001)
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- Abstract
- Tang and Solomon, based upon their review of the history of topical and other than topical criteria in relevance evaluation, decide to look at a two stage model where judgements are first made on surrogate records and then on full document text to determine if a criteria shift takes place and if so in what manner and to what degree. Both a controlled experiment and a naturalistic study were used to study the staging of relevance judgement criteria. In the controlled environment 90 undergraduate Psychology students were instructed to choose papers that would help them meet an assignment from 20 preselected papers on broader topic that included that assigned. They first selected on the basis of citation and abstract, then read the papers, and in each process filled out a questionnaire on the importance of each of 15 criteria at each stage of the two-stage process. In the naturalistic study 9 Ph.D. Psychology students conducted literature searches to support their own research and were asked to think aloud while making their decisions from retrieved surrogates, and later filled out a questionnaire while reading those materials that they selected and then interviewed at the end of the process. Apparently understandability is important at both stages. Importance increased at stage two. Cognitive criteria do not all follow the same pattern across stages. The controlled group thought quality of information was most important in stage one and topicality most important in stage 2. In the naturalistic study topicality was most frequent for stage one and research structure for stage two. A classification of criteria by their functionality is suggested as a better approach. First a division as to whether a criterion is objectively associated with the document as opposed to being subjectively associated with a person's expectations; then a division based on primary (essential) or secondary (for assistance) status.
-
Wallace, P.M.: Periodical title searching in online catalogues (1997)
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- Date
- 29. 7.1998 10:57:22
-
Tomney, H.; Burton, P.F.: Electronic journals : a case study of usage and attitudes among academics (1998)
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- Date
- 22. 5.1999 19:07:29
-
Gremett, P.: Utilizing a user's context to improve search results (2006)
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- Date
- 22. 7.2006 18:17:44
-
Schneider, R.: OPACs, Benutzer und das Web (2009)
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- Date
- 22. 2.2009 18:50:43
