-
Cochrane, P.A.: Improving LCSH for use in online catalogs : exercises for self-help with a selection of background readings (1986)
0.24
0.23948164 = product of:
0.39913607 = sum of:
0.06798208 = product of:
0.13596416 = sum of:
0.13596416 = weight(_text_:problems in 4218) [ClassicSimilarity], result of:
0.13596416 = score(doc=4218,freq=16.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.9028852 = fieldWeight in 4218, product of:
4.0 = tf(freq=16.0), with freq of:
16.0 = termFreq=16.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.0546875 = fieldNorm(doc=4218)
0.5 = coord(1/2)
0.21407966 = product of:
0.42815933 = sum of:
0.42815933 = weight(_text_:exercises in 4218) [ClassicSimilarity], result of:
0.42815933 = score(doc=4218,freq=18.0), product of:
0.25947425 = queryWeight, product of:
7.11192 = idf(docFreq=97, maxDocs=44218)
0.036484417 = queryNorm
1.6501033 = fieldWeight in 4218, product of:
4.2426405 = tf(freq=18.0), with freq of:
18.0 = termFreq=18.0
7.11192 = idf(docFreq=97, maxDocs=44218)
0.0546875 = fieldNorm(doc=4218)
0.5 = coord(1/2)
0.1170743 = product of:
0.2341486 = sum of:
0.2341486 = weight(_text_:etc in 4218) [ClassicSimilarity], result of:
0.2341486 = score(doc=4218,freq=16.0), product of:
0.19761753 = queryWeight, product of:
5.4164915 = idf(docFreq=533, maxDocs=44218)
0.036484417 = queryNorm
1.1848575 = fieldWeight in 4218, product of:
4.0 = tf(freq=16.0), with freq of:
16.0 = termFreq=16.0
5.4164915 = idf(docFreq=533, maxDocs=44218)
0.0546875 = fieldNorm(doc=4218)
0.5 = coord(1/2)
0.6 = coord(3/5)
- LCSH
- Subject headings, Library of Congress / Problems, exercises, etc
Subject cataloging / Problems, exercises, etc
Online library catalogs / Subject access / Problems, exercises, etc
Online bibliographic searching / Problems, exercises, etc
- Subject
- Subject headings, Library of Congress / Problems, exercises, etc
Subject cataloging / Problems, exercises, etc
Online library catalogs / Subject access / Problems, exercises, etc
Online bibliographic searching / Problems, exercises, etc
-
Akeroyd, J.: Information seeking in online catalogues (1990)
0.04
0.042140376 = product of:
0.105350934 = sum of:
0.03399104 = product of:
0.06798208 = sum of:
0.06798208 = weight(_text_:problems in 2125) [ClassicSimilarity], result of:
0.06798208 = score(doc=2125,freq=4.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.4514426 = fieldWeight in 2125, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.0546875 = fieldNorm(doc=2125)
0.5 = coord(1/2)
0.071359895 = product of:
0.14271979 = sum of:
0.14271979 = weight(_text_:exercises in 2125) [ClassicSimilarity], result of:
0.14271979 = score(doc=2125,freq=2.0), product of:
0.25947425 = queryWeight, product of:
7.11192 = idf(docFreq=97, maxDocs=44218)
0.036484417 = queryNorm
0.5500345 = fieldWeight in 2125, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
7.11192 = idf(docFreq=97, maxDocs=44218)
0.0546875 = fieldNorm(doc=2125)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- Three different interfaces for online public access catalogues were evaluated using transaction logging as a methodology. In two cases exercises were set and run against each interface so that results could be critically evaluated to indicate areas of weakness. In all cases a random transaction log was derived and this was used to diagnose system problems and identify patterns of behaviour. Results showed that searches were often difficult to categorise, users employing different approaches to the same end. Users also were prepared to undertake sustained searching until something was retrieved; however they then frequently stopped. Search input problems are also identified and possible areas for further research suggested
-
Martin, G.: Main entry : the argument for a defence of main entry in the OPAC (1996)
0.02
0.018896578 = product of:
0.047241446 = sum of:
0.027468907 = product of:
0.054937813 = sum of:
0.054937813 = weight(_text_:problems in 7234) [ClassicSimilarity], result of:
0.054937813 = score(doc=7234,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.36482072 = fieldWeight in 7234, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.0625 = fieldNorm(doc=7234)
0.5 = coord(1/2)
0.019772539 = product of:
0.039545078 = sum of:
0.039545078 = weight(_text_:22 in 7234) [ClassicSimilarity], result of:
0.039545078 = score(doc=7234,freq=2.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.30952093 = fieldWeight in 7234, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=7234)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- Argues that the current understanding of main entry is the chief access point for the work in a physical item being described by a bibliographic record. Explains the justification for main entries while drawing attention to the few related problems as they relate to OPACs
- Source
- Cataloguing Australia. 22(1996) nos.1/2, S.21-25
-
Nuttall, H.D.; McAbee, S.L.: Pathfinders on-line : adding pathfinders to a NOTIS on-line system (1997)
0.02
0.018896578 = product of:
0.047241446 = sum of:
0.027468907 = product of:
0.054937813 = sum of:
0.054937813 = weight(_text_:problems in 510) [ClassicSimilarity], result of:
0.054937813 = score(doc=510,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.36482072 = fieldWeight in 510, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.0625 = fieldNorm(doc=510)
0.5 = coord(1/2)
0.019772539 = product of:
0.039545078 = sum of:
0.039545078 = weight(_text_:22 in 510) [ClassicSimilarity], result of:
0.039545078 = score(doc=510,freq=2.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.30952093 = fieldWeight in 510, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=510)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- For decades print pathfinders have complemented card catalogues and been useful reference tools. They are overlooked as components of online catalogues, even though they can extend the depth of the catalogue. To encourage librarians to consider integrating pathfinders into online catalogues discusses problems in OPAC searching, describes the value and styles of pathfinders, and illustrates how to include them in a NOTIS system
- Date
- 27.11.1995 17:07:22
-
Ballard, T.; Grimaldi, A.: Improve OPAC searching by reducing tagging errors in MARC records (1997)
0.02
0.018896578 = product of:
0.047241446 = sum of:
0.027468907 = product of:
0.054937813 = sum of:
0.054937813 = weight(_text_:problems in 695) [ClassicSimilarity], result of:
0.054937813 = score(doc=695,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.36482072 = fieldWeight in 695, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.0625 = fieldNorm(doc=695)
0.5 = coord(1/2)
0.019772539 = product of:
0.039545078 = sum of:
0.039545078 = weight(_text_:22 in 695) [ClassicSimilarity], result of:
0.039545078 = score(doc=695,freq=2.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.30952093 = fieldWeight in 695, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=695)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- One of the most common errors in cataloguing library materials involves miscoding of the nonfiling indicator of title fields. Notes the extent of the problem and its negative effect on searching in the library's online catalogue and surveys how librarians have approached solutions to the problems. Describes how the major library automation system address this problem
- Date
- 6. 3.1997 16:22:15
-
Wallace, P.M.: Periodical title searching in online catalogues (1997)
0.02
0.018896578 = product of:
0.047241446 = sum of:
0.027468907 = product of:
0.054937813 = sum of:
0.054937813 = weight(_text_:problems in 1628) [ClassicSimilarity], result of:
0.054937813 = score(doc=1628,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.36482072 = fieldWeight in 1628, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.0625 = fieldNorm(doc=1628)
0.5 = coord(1/2)
0.019772539 = product of:
0.039545078 = sum of:
0.039545078 = weight(_text_:22 in 1628) [ClassicSimilarity], result of:
0.039545078 = score(doc=1628,freq=2.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.30952093 = fieldWeight in 1628, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=1628)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- Reports on a dramatic shift from subject to periodical title searching at Colorado University Libraries. States possible reasons for the change, examines problems encountered by users with searching the periodical title index and suggests how this change in online catalogue searching may affect future catalogue design and bibliographic instruction
- Date
- 29. 7.1998 10:57:22
-
Buckland, M.K.: OASIS: a front-end for prototyping catalog enhancements (1992)
0.02
0.016534507 = product of:
0.04133627 = sum of:
0.024035294 = product of:
0.048070587 = sum of:
0.048070587 = weight(_text_:problems in 4546) [ClassicSimilarity], result of:
0.048070587 = score(doc=4546,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.31921813 = fieldWeight in 4546, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.0546875 = fieldNorm(doc=4546)
0.5 = coord(1/2)
0.017300973 = product of:
0.034601945 = sum of:
0.034601945 = weight(_text_:22 in 4546) [ClassicSimilarity], result of:
0.034601945 = score(doc=4546,freq=2.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.2708308 = fieldWeight in 4546, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=4546)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- By the mid 1980s online bibliographic systems retrieved excessively large sets. Conversely, with standard Boolean systems, searches retrieved commonly nothing or too few records. In Nov. 92, 32% of searches yielded nothing from a retrieval set averaging 98. Offers solutions to these problems using MELVYL as a case study. Examines how non topical data such as date, language and location of document can improve topical searches. Explains OASIS and front end phototyping. Discusses adaptive retrieval, strategic commands, expanded retrieval and developments of OASIS. Covers aggregation of filtered sets, related terms, automatic progressive truncation, the SUMMARIZE LIBRARIES command, filing and filtering and collection analysis
- Source
- Library hi tech. 10(1992) no.4, S.7-22
-
Witt, M.: Survey on the use of the catalogue at the Mediatheque of the Cité des Sciences et de l'Industrie (CSI) (1993)
0.02
0.016534507 = product of:
0.04133627 = sum of:
0.024035294 = product of:
0.048070587 = sum of:
0.048070587 = weight(_text_:problems in 7914) [ClassicSimilarity], result of:
0.048070587 = score(doc=7914,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.31921813 = fieldWeight in 7914, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.0546875 = fieldNorm(doc=7914)
0.5 = coord(1/2)
0.017300973 = product of:
0.034601945 = sum of:
0.034601945 = weight(_text_:22 in 7914) [ClassicSimilarity], result of:
0.034601945 = score(doc=7914,freq=2.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.2708308 = fieldWeight in 7914, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=7914)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- The library of the Cité des Sciences et de l'industrie attracts 4.000 visitors daily of whom 25% consult the GEAC system OPAC. Describes a 1992 survey consisting of online questions followed by an interview. The questionnaires were adapted from ones used in the UK and utilised OLIVE (Online Interactive Validation and Evaluation). While difficulties arose from users' inconsistency in their replies and failures to answer questions, it has become clear that subject access is unsatisfactory, sometimes because of mistyping by the searcher but also because of the vocabulary problems and lack of guidance in search strategies
- Source
- International cataloguing and bibliographic control. 22(1993) no.4, S.68-71
-
Casale, M.: Searching for a common language (1996)
0.02
0.016534507 = product of:
0.04133627 = sum of:
0.024035294 = product of:
0.048070587 = sum of:
0.048070587 = weight(_text_:problems in 4439) [ClassicSimilarity], result of:
0.048070587 = score(doc=4439,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.31921813 = fieldWeight in 4439, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.0546875 = fieldNorm(doc=4439)
0.5 = coord(1/2)
0.017300973 = product of:
0.034601945 = sum of:
0.034601945 = weight(_text_:22 in 4439) [ClassicSimilarity], result of:
0.034601945 = score(doc=4439,freq=2.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.2708308 = fieldWeight in 4439, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=4439)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- Describes the availability, use and value of Z39.50, an international standard which allows a librarian accessing a database on one computer platform to search an OPAC hosted on another computer with a totally different database structure. Experiences of those working with the standard are given, and its use by the European Union IRIS project to link 6 major Irish research libraries is examined. Despite some problems encountered with different forms of author cataloguing and possible competition from the WWW, the standard is seen as possessing considerable strengths, for example in searching different catalogues and presenting the results in a standard format on screen, which justify the continuing interest of librarians
- Source
- Library manager. 1996, no.14, S.22-23
-
Ayres, F.H.; Nielsen, L.P.S.; Ridley, M.J.: Bibliographic management : a new approach using the manifestations concept and the Bradford OPAC (1996)
0.02
0.016534507 = product of:
0.04133627 = sum of:
0.024035294 = product of:
0.048070587 = sum of:
0.048070587 = weight(_text_:problems in 5162) [ClassicSimilarity], result of:
0.048070587 = score(doc=5162,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.31921813 = fieldWeight in 5162, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.0546875 = fieldNorm(doc=5162)
0.5 = coord(1/2)
0.017300973 = product of:
0.034601945 = sum of:
0.034601945 = weight(_text_:22 in 5162) [ClassicSimilarity], result of:
0.034601945 = score(doc=5162,freq=2.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.2708308 = fieldWeight in 5162, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=5162)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- The Bradford OPAC is an experimental prototype OPAC, with a graphical user interface, based on the manifestation concept. It was designed to study some of the problems in catalogues where there are many versions of the same work or complex multipart works. In place of the main entry based approach of one complete record for each item, the OPAC groups together into sets items that are manifestations of the same work. Users are presented with shorter lists of different intellectual works. Items in a set can be sorted, searched and displayed according to user supplied criteria
- Source
- Cataloging and classification quarterly. 22(1996) no.1, S.3-28
-
Buchanen, N.L.; Rupp-Serano, K.; LaGrange, J.: ¬The effectiveness of a projected computersed presentation in teaching online library catalog searching (1992)
0.01
0.014271979 = product of:
0.071359895 = sum of:
0.071359895 = product of:
0.14271979 = sum of:
0.14271979 = weight(_text_:exercises in 2652) [ClassicSimilarity], result of:
0.14271979 = score(doc=2652,freq=2.0), product of:
0.25947425 = queryWeight, product of:
7.11192 = idf(docFreq=97, maxDocs=44218)
0.036484417 = queryNorm
0.5500345 = fieldWeight in 2652, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
7.11192 = idf(docFreq=97, maxDocs=44218)
0.0546875 = fieldNorm(doc=2652)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Abstract
- A computerised presentation teaching method of NOTIS commands and search strategies in on-line catalogues was produced using ShowPartner F/X software. Students viewed the presentation and completed a NOTIS search exercise. A 2nd group of students from the same class completed the exercise without having viewed the presentation. A comparison of the 2 groups' exercises and transaction logs show that the group that viewed the presentation proved better at using correct NOTIS commands and formulationg effective search strategies. The greatest differences between the 2 groups were in subject searching (LCSH and keyword) and in locating specific items
-
Pasanen-Tuomainen, I.: Evaluating the user education (1994)
0.01
0.014271979 = product of:
0.071359895 = sum of:
0.071359895 = product of:
0.14271979 = sum of:
0.14271979 = weight(_text_:exercises in 1421) [ClassicSimilarity], result of:
0.14271979 = score(doc=1421,freq=2.0), product of:
0.25947425 = queryWeight, product of:
7.11192 = idf(docFreq=97, maxDocs=44218)
0.036484417 = queryNorm
0.5500345 = fieldWeight in 1421, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
7.11192 = idf(docFreq=97, maxDocs=44218)
0.0546875 = fieldNorm(doc=1421)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Abstract
- Desicusses the user training programme of the Helsinki University of Technology Library in the light of an internordic monitoring project. In the project, the use of OPACs was evaluated by analyzing the transaction logs and it was concluded that end users do not exploit the various possibilities of OPACs. A large part of the material found in the collections in the library is not retrieved: misspellings, lack of truncation, inequate use of Boolean operators and wrong database choices lead to ineffective retrieval. Emphasis in the online catalogue training has been on the 'hands on' exercises and it appears that the training programme is not very effective in the area of subject searching. Presents reasons for this and discusses plans for the future development of the library user training programme
-
Caro Castro, C.; Travieso Rodríguez, C.: Ariadne's thread : knowledge structures for browsing in OPAC's (2003)
0.01
0.013085462 = product of:
0.032713655 = sum of:
0.012017647 = product of:
0.024035294 = sum of:
0.024035294 = weight(_text_:problems in 2768) [ClassicSimilarity], result of:
0.024035294 = score(doc=2768,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.15960906 = fieldWeight in 2768, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.02734375 = fieldNorm(doc=2768)
0.5 = coord(1/2)
0.020696009 = product of:
0.041392017 = sum of:
0.041392017 = weight(_text_:etc in 2768) [ClassicSimilarity], result of:
0.041392017 = score(doc=2768,freq=2.0), product of:
0.19761753 = queryWeight, product of:
5.4164915 = idf(docFreq=533, maxDocs=44218)
0.036484417 = queryNorm
0.20945519 = fieldWeight in 2768, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.4164915 = idf(docFreq=533, maxDocs=44218)
0.02734375 = fieldNorm(doc=2768)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- Subject searching is the most common but also the most conflictive searching for end user. The aim of this paper is to check how users expressions match subject headings and to prove if knowledge structure used in online catalogs enhances searching effectiveness. A bibliographic revision about difficulties in subject access and proposed methods to improve it is also presented. For the empirical analysis, transaction logs from two university libraries, online catalogs (CISNE and FAMA) were collected. Results show that more than a quarter of user queries are effective due to an alphabetical subject index approach and browsing through hypertextual links. 1. Introduction Since the 1980's, online public access catalogs (OPAC's) have become usual way to access bibliographic information. During the last two decades the technological development has helped to extend their use, making feasible the access for a whole of users that is getting more and more extensive and heterogeneous, and also to incorporate information resources in electronic formats and to interconnect systems. However, technology seems to have developed faster than our knowledge about the tasks where it has been applied and than the evolution of our capacities for adapting to it. The conceptual model of OPAC has been hardly modified recently, and for interacting with them, users still need to combine the same skills and basic knowledge than at the beginning of its introduction (Borgman, 1986, 2000): a) conceptual knowledge to translate the information need into an appropriate query because of a well-designed mental model of the system, b) semantic and syntactic knowledge to be able to implement that query (access fields, searching type, Boolean logic, etc.) and c) basic technical skills in computing. At present many users have the essential technical skills to make use, with more or less expertise, of a computer. This number is substantially reduced when it is referred to the conceptual, semantic and syntactic knowledge that is necessary to achieve a moderately satisfactory search. An added difficulty arises in subject searching, as users should concrete their unknown information needs in terms that the information retrieval system can understand. Many researches have focused an unskilled searchers' difficulties to enter an effective query. The mental models influence, users assumption about characteristics, structure, contents and operation of the system they interact with have been analysed (Dillon, 2000; Dimitroff, 2000). Another issue that implies difficulties is vocabulary: how to find the right terms to implement a query and to modify it as the case may be. Terminology and expressions characteristics used in searching (Bates, 1993), the match between user terms and the subject headings from the catalog (Carlyle, 1989; Drabensttot, 1996; Drabensttot & Vizine-Goetz, 1994), the incidence of spelling errors (Drabensttot and Weller, 1996; Ferl and Millsap, 1996; Walker and Jones, 1987), users problems
-
Markey, K.: Users and the online catalog : subject access problems (1986)
0.01
0.010987563 = product of:
0.054937813 = sum of:
0.054937813 = product of:
0.10987563 = sum of:
0.10987563 = weight(_text_:problems in 342) [ClassicSimilarity], result of:
0.10987563 = score(doc=342,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.72964144 = fieldWeight in 342, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.125 = fieldNorm(doc=342)
0.5 = coord(1/2)
0.2 = coord(1/5)
-
Blazek, R.; Bilal, D.: Problems with OPAC : A case study of an academic research library (1988)
0.01
0.010987563 = product of:
0.054937813 = sum of:
0.054937813 = product of:
0.10987563 = sum of:
0.10987563 = weight(_text_:problems in 360) [ClassicSimilarity], result of:
0.10987563 = score(doc=360,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.72964144 = fieldWeight in 360, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.125 = fieldNorm(doc=360)
0.5 = coord(1/2)
0.2 = coord(1/5)
-
Slack, F.; Wood, A.J.: Subject searching on British OPACs : problems and progress (1990)
0.01
0.010987563 = product of:
0.054937813 = sum of:
0.054937813 = product of:
0.10987563 = sum of:
0.10987563 = weight(_text_:problems in 1405) [ClassicSimilarity], result of:
0.10987563 = score(doc=1405,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.72964144 = fieldWeight in 1405, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.125 = fieldNorm(doc=1405)
0.5 = coord(1/2)
0.2 = coord(1/5)
-
Fayen, E.G.: Loading local machine readable data files : issues, problems, and answers (1989)
0.01
0.010987563 = product of:
0.054937813 = sum of:
0.054937813 = product of:
0.10987563 = sum of:
0.10987563 = weight(_text_:problems in 2157) [ClassicSimilarity], result of:
0.10987563 = score(doc=2157,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.72964144 = fieldWeight in 2157, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.125 = fieldNorm(doc=2157)
0.5 = coord(1/2)
0.2 = coord(1/5)
-
Berg, O.: Current problems with MARC/ISBD formats in relation to online public access of bibliographic information (1991)
0.01
0.009614117 = product of:
0.048070587 = sum of:
0.048070587 = product of:
0.096141174 = sum of:
0.096141174 = weight(_text_:problems in 469) [ClassicSimilarity], result of:
0.096141174 = score(doc=469,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.63843626 = fieldWeight in 469, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.109375 = fieldNorm(doc=469)
0.5 = coord(1/2)
0.2 = coord(1/5)
-
Lynch, C.: Large databases and multiple database problems in online catalogs (1989)
0.01
0.009614117 = product of:
0.048070587 = sum of:
0.048070587 = product of:
0.096141174 = sum of:
0.096141174 = weight(_text_:problems in 6044) [ClassicSimilarity], result of:
0.096141174 = score(doc=6044,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.63843626 = fieldWeight in 6044, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.109375 = fieldNorm(doc=6044)
0.5 = coord(1/2)
0.2 = coord(1/5)
-
Yee, M.M.; Soto, R.: User problems with access to fictional characters and personal names in online public access catalogs (1991)
0.01
0.009614117 = product of:
0.048070587 = sum of:
0.048070587 = product of:
0.096141174 = sum of:
0.096141174 = weight(_text_:problems in 7257) [ClassicSimilarity], result of:
0.096141174 = score(doc=7257,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.63843626 = fieldWeight in 7257, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.109375 = fieldNorm(doc=7257)
0.5 = coord(1/2)
0.2 = coord(1/5)
