-
Chen, H.-M.; Cooper, M.D.: Stochastic modeling of usage patterns in a Web-based information system (2002)
0.04
0.044585004 = product of:
0.11146251 = sum of:
0.062146567 = weight(_text_:index in 577) [ClassicSimilarity], result of:
0.062146567 = score(doc=577,freq=6.0), product of:
0.18579477 = queryWeight, product of:
4.369764 = idf(docFreq=1520, maxDocs=44218)
0.04251826 = queryNorm
0.3344904 = fieldWeight in 577, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
4.369764 = idf(docFreq=1520, maxDocs=44218)
0.03125 = fieldNorm(doc=577)
0.049315944 = weight(_text_:system in 577) [ClassicSimilarity], result of:
0.049315944 = score(doc=577,freq=14.0), product of:
0.13391352 = queryWeight, product of:
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.04251826 = queryNorm
0.36826712 = fieldWeight in 577, product of:
3.7416575 = tf(freq=14.0), with freq of:
14.0 = termFreq=14.0
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.03125 = fieldNorm(doc=577)
0.4 = coord(2/5)
- Abstract
- Users move from one state (or task) to another in an information system's labyrinth as they try to accomplish their work, and the amount of time they spend in each state varies. This article uses continuous-time stochastic models, mainly based on semi-Markov chains, to derive user state transition patterns (both in rates and in probabilities) in a Web-based information system. The methodology was demonstrated with 126,925 search sessions drawn from the transaction logs of the University of California's MELVYL® library catalog system (www.melvyLucop.edu). First, user sessions were categorized into six groups based on their similar use of the system. Second, by using a three-layer hierarchical taxonomy of the system Web pages, user sessions in each usage group were transformed into a sequence of states. All the usage groups but one have third-order sequential dependency in state transitions. The sole exception has fourth-order sequential dependency. The transition rates as well as transition probabilities of the semi-Markov model provide a background for interpreting user behavior probabilistically, at various levels of detail. Finally, the differences in derived usage patterns between usage groups were tested statistically. The test results showed that different groups have distinct patterns of system use. Knowledge of the extent of sequential dependency is beneficial because it allows one to predict a user's next move in a search space based on the past moves that have been made. It can also be used to help customize the design of the user interface to the system to facilitate interaction. The group CL6 labeled "knowledgeable and sophisticated usage" and the group CL7 labeled "unsophisticated usage" both had third-order sequential dependency and had the same most-frequently occurring search pattern: screen display, record display, screen display, and record display. The group CL8 called "highly interactive use with good search results" had fourth-order sequential dependency, and its most frequently occurring pattern was the same as CL6 and CL7 with one more screen display action added. The group CL13, called "known-item searching" had third-order sequential dependency, and its most frequently occurring pattern was index access, search with retrievals, screen display, and record display. Group CL14 called "help intensive searching," and CL18 called "relatively unsuccessful" both had thirdorder sequential dependency, and for both groups the most frequently occurring pattern was index access, search without retrievals, index access, and again, search without retrievals.
-
Merchant, B.; Winters, N.: Small libraries on the Internet (1997)
0.02
0.021112198 = product of:
0.052780494 = sum of:
0.03727935 = weight(_text_:system in 1633) [ClassicSimilarity], result of:
0.03727935 = score(doc=1633,freq=2.0), product of:
0.13391352 = queryWeight, product of:
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.04251826 = queryNorm
0.27838376 = fieldWeight in 1633, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.0625 = fieldNorm(doc=1633)
0.015501143 = product of:
0.04650343 = sum of:
0.04650343 = weight(_text_:29 in 1633) [ClassicSimilarity], result of:
0.04650343 = score(doc=1633,freq=2.0), product of:
0.14956595 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.04251826 = queryNorm
0.31092256 = fieldWeight in 1633, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.0625 = fieldNorm(doc=1633)
0.33333334 = coord(1/3)
0.4 = coord(2/5)
- Abstract
- 2nd of 2 articles detailing how library management systems have been used in special libraries to launch WWW catalogue services. Reports on how the Science Policy Research Unit, University of Sussex, UK, launched a WWW catalogue using the library and management system Heritage. Describes: software choice and installation, the Internet online catalogue module, and responses to it so far
- Date
- 29. 7.1998 11:30:35
-
Welcome to the MELVYL system web interface (1997)
0.02
0.021112198 = product of:
0.052780494 = sum of:
0.03727935 = weight(_text_:system in 1776) [ClassicSimilarity], result of:
0.03727935 = score(doc=1776,freq=2.0), product of:
0.13391352 = queryWeight, product of:
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.04251826 = queryNorm
0.27838376 = fieldWeight in 1776, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.0625 = fieldNorm(doc=1776)
0.015501143 = product of:
0.04650343 = sum of:
0.04650343 = weight(_text_:29 in 1776) [ClassicSimilarity], result of:
0.04650343 = score(doc=1776,freq=2.0), product of:
0.14956595 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.04251826 = queryNorm
0.31092256 = fieldWeight in 1776, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.0625 = fieldNorm(doc=1776)
0.33333334 = coord(1/3)
0.4 = coord(2/5)
- Date
- 29. 1.1996 12:21:39
-
Sharma, A.: ¬The Z39.50 information retrieval protocol (1998)
0.02
0.02105642 = product of:
0.05264105 = sum of:
0.03727935 = weight(_text_:system in 1406) [ClassicSimilarity], result of:
0.03727935 = score(doc=1406,freq=2.0), product of:
0.13391352 = queryWeight, product of:
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.04251826 = queryNorm
0.27838376 = fieldWeight in 1406, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.0625 = fieldNorm(doc=1406)
0.015361699 = product of:
0.046085097 = sum of:
0.046085097 = weight(_text_:22 in 1406) [ClassicSimilarity], result of:
0.046085097 = score(doc=1406,freq=2.0), product of:
0.1488917 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04251826 = queryNorm
0.30952093 = fieldWeight in 1406, 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=1406)
0.33333334 = coord(1/3)
0.4 = coord(2/5)
- Abstract
- Reports results of the work of a new member of the ELINOR project team to review the development taking place in Z39.50 networked information retrieval protocol with a view to bringing the University's electronic library pilot systems, including ELINOR and the online catalogue into a single, unified system. Focuses particularly on the WWW client server environment
- Series
- British Library Research and Innovation Centre (BLRIC) report; 22
-
Cooper, M.D.: Usage patterns of a Web-based library catalog (2001)
0.01
0.013195123 = product of:
0.032987807 = sum of:
0.023299592 = weight(_text_:system in 5584) [ClassicSimilarity], result of:
0.023299592 = score(doc=5584,freq=2.0), product of:
0.13391352 = queryWeight, product of:
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.04251826 = queryNorm
0.17398985 = fieldWeight in 5584, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.0390625 = fieldNorm(doc=5584)
0.009688215 = product of:
0.029064644 = sum of:
0.029064644 = weight(_text_:29 in 5584) [ClassicSimilarity], result of:
0.029064644 = score(doc=5584,freq=2.0), product of:
0.14956595 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.04251826 = queryNorm
0.19432661 = fieldWeight in 5584, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.0390625 = fieldNorm(doc=5584)
0.33333334 = coord(1/3)
0.4 = coord(2/5)
- Abstract
- This article reports on a model and patterns of use of a library catalog that can be accessed through the Internet. Three categories of users are identified. individuals who perform a search of the catalog, tourists who look only at opening pages of the library catalog's site, and Web spiders that come to the site to obtain pages for indexing the Web. A number of types of use activities are also identified, and can be grouped with the presearch phase (which takes place before any searching begins): the search phase, the display phase (in which users display the results of their search), and phases in which users make errors, ask the system for help or assistance, and take other actions. An empirical investigation of patterns of use of a university Web-based library catalog was conducted for 479 days. During that period, the characteristics of about 2.5 million sessions were recorded and analyzed, and usage trends were identified. Of the total, 62% of the sessions were for users who performed a search, 27% were from spiders, and 11% were for tourists. During the study period, the average search session lasted about 5 minutes when the study began and had increased to about 10 minutes 16 months later. An average search consisted of about 1.5 presearch actions lasting about 25 seconds, about 5.3 display actions, and 2.5 searches per session. The latter two categories are in the range of 35-37 seconds per session each. There were major differences in usage (number of searches, search time, number of display actions, and display time), depending upon the database accessed
- Date
- 29. 9.2001 13:59:04
-
Piccotti, P.: ¬Les nouvelles technologies et la recherche documentaire (1998)
0.01
0.013049269 = product of:
0.06524634 = sum of:
0.06524634 = product of:
0.097869515 = sum of:
0.05754506 = weight(_text_:29 in 2226) [ClassicSimilarity], result of:
0.05754506 = score(doc=2226,freq=4.0), product of:
0.14956595 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.04251826 = queryNorm
0.38474706 = fieldWeight in 2226, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.0546875 = fieldNorm(doc=2226)
0.04032446 = weight(_text_:22 in 2226) [ClassicSimilarity], result of:
0.04032446 = score(doc=2226,freq=2.0), product of:
0.1488917 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04251826 = queryNorm
0.2708308 = fieldWeight in 2226, 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=2226)
0.6666667 = coord(2/3)
0.2 = coord(1/5)
- Date
- 29. 1.1996 16:50:24
17.11.1998 10:33:29
- Source
- Bulletin d'informations de l'Association des Bibliothecaires Francais. 1998, no.178, S.20-22
-
Davis, E.; Stone, J.: ¬A painless route on to the Web : Web services 1: The Royal Postgraduate Medical School (1997)
0.01
0.012345138 = product of:
0.061725687 = sum of:
0.061725687 = product of:
0.09258853 = sum of:
0.04650343 = weight(_text_:29 in 1632) [ClassicSimilarity], result of:
0.04650343 = score(doc=1632,freq=2.0), product of:
0.14956595 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.04251826 = queryNorm
0.31092256 = fieldWeight in 1632, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.0625 = fieldNorm(doc=1632)
0.046085097 = weight(_text_:22 in 1632) [ClassicSimilarity], result of:
0.046085097 = score(doc=1632,freq=2.0), product of:
0.1488917 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04251826 = queryNorm
0.30952093 = fieldWeight in 1632, 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=1632)
0.6666667 = coord(2/3)
0.2 = coord(1/5)
- Date
- 29. 7.1998 21:22:27
-
Ayres, F.H.; Nielsen, L.P.S.; Ridley, M.J.: ¬The Bradford OPAC2 : Managing and displaying retrievals from a distributed search in Z39.50 (1998)
0.01
0.011299702 = product of:
0.056498513 = sum of:
0.056498513 = weight(_text_:system in 1787) [ClassicSimilarity], result of:
0.056498513 = score(doc=1787,freq=6.0), product of:
0.13391352 = queryWeight, product of:
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.04251826 = queryNorm
0.42190298 = fieldWeight in 1787, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.0546875 = fieldNorm(doc=1787)
0.2 = coord(1/5)
- Abstract
- Describes work of the BOPAC2 project, funded by the British Library Research and Inoovation Centre, from Sep 1996 to Jan 1997, to investigate the issues involved in managing large and complex retrievals involving Z39.50 searches, including searches of multiple databases. The system is a WWW front end that allows simultaneously access to a number of library OPACs via Z39.50. The system is designed to make access to large and complex retrieval simpler, similar records are clustered together and retrievals may be sorted in a number of ways and by different criteria. Describes the design, development and evaluation of the system with suggestions for future work
-
Edwards, K.: Evaluation of user interface design to optimize access to library databases for people who are motor impaired (1997)
0.01
0.0092261685 = product of:
0.04613084 = sum of:
0.04613084 = weight(_text_:system in 2228) [ClassicSimilarity], result of:
0.04613084 = score(doc=2228,freq=4.0), product of:
0.13391352 = queryWeight, product of:
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.04251826 = queryNorm
0.34448233 = fieldWeight in 2228, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.0546875 = fieldNorm(doc=2228)
0.2 = coord(1/5)
- Abstract
- 3 user interfaces to LIBIS, a library catalogue accessible via the Internet, were evaluated for use by people who are motor impaired, to identify how interface design influences the motor actions necessary to operate the system. Results confirm that minimizing the motor actions necessary for interaction with the interfaces is needed for this group and recommends improving consistency in design, optimizing instinctive awareness of how to use the system and providing informative feedback and instructive messages on how to progress. these recommendations will be validated through iterative adaptation and testing of the user interface, while designing a prototype library service
-
Hildreth, C.R.: Are Web-based OPACs more effective retrieval systems than their conventional predecessors? : an experimental study (2000)
0.01
0.008069678 = product of:
0.040348392 = sum of:
0.040348392 = weight(_text_:context in 113) [ClassicSimilarity], result of:
0.040348392 = score(doc=113,freq=2.0), product of:
0.17622331 = queryWeight, product of:
4.14465 = idf(docFreq=1904, maxDocs=44218)
0.04251826 = queryNorm
0.22896172 = fieldWeight in 113, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.14465 = idf(docFreq=1904, maxDocs=44218)
0.0390625 = fieldNorm(doc=113)
0.2 = coord(1/5)
- Abstract
- The World Wide Web (simplified here to "Web") is well-known for its "point and click" graphical user interface (GUI) and hyperlink search and navigate capabilities. When OPACs are placed in this operational context, users can easily hyperlink from a bibliographic display to related search terms, class marks, or bibliographic records. This hyperlinking capability is not available in most conventional text-based OPACs. As more and more users undertake their searches on Web-based information retrieval systems such as OPACs, it is natural to ask, "Are Web-based OPACs more effective retrieval systems than their conventional predecessors?" This paper presents the findings of an experimental study which compared users' search performance, assessments of ease of use, and satisfaction with search results after use of a Web OPAC or its conventional counterpart. The primary questions addressed by this research center on the influence of two experimental factors, OPAC search interface style and search task level of difficulty, on the dependent variables: actual search performance, perceptions of ease of use, and user assessments of satisfaction with search results. It was hypothesized that Web OPACs would be assessed as easier to use and that they would outperform conventional OPACs when measured by actual search results and users' levels of satisfaction with search results. Web OPAC searchers outperformed Text OPAC searchers, but search task level of difficulty is a major determinant of search success. The study also found little association between searchers' level of satisfaction with results and actual search performance
-
Denning, R.; Shuttleworth, M.; Smith, P.: Interface design concepts in the development of a Web-based information retrieval system (1998)
0.01
0.00745587 = product of:
0.03727935 = sum of:
0.03727935 = weight(_text_:system in 1936) [ClassicSimilarity], result of:
0.03727935 = score(doc=1936,freq=2.0), product of:
0.13391352 = queryWeight, product of:
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.04251826 = queryNorm
0.27838376 = fieldWeight in 1936, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.0625 = fieldNorm(doc=1936)
0.2 = coord(1/5)
-
Bjorvik, L.; Kogstand, O.T.: BIBLIOFIL and the World Wide Web : IT in public libraries in Norway (1995)
0.01
0.00745587 = product of:
0.03727935 = sum of:
0.03727935 = weight(_text_:system in 2406) [ClassicSimilarity], result of:
0.03727935 = score(doc=2406,freq=2.0), product of:
0.13391352 = queryWeight, product of:
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.04251826 = queryNorm
0.27838376 = fieldWeight in 2406, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.0625 = fieldNorm(doc=2406)
0.2 = coord(1/5)
- Abstract
- The BIBLIOFIL library management system is widely used by public libraries throughout Norway. The supplier, Bibliotek-Systemer, recognizes the importance of making public library catalogues available on the Internet. After considering the alterbative of Z39.50/SR, it was decided to implement http, the WWW protocol to enable catalogue access. In the 1st month, 3 BIBLIOFIL libraries have already made their collections available and many more look set to follow
-
Auto-Graphics to provide Web-based solutions to Ohio, Illinois libraries (1998)
0.01
0.00745587 = product of:
0.03727935 = sum of:
0.03727935 = weight(_text_:system in 2232) [ClassicSimilarity], result of:
0.03727935 = score(doc=2232,freq=2.0), product of:
0.13391352 = queryWeight, product of:
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.04251826 = queryNorm
0.27838376 = fieldWeight in 2232, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.0625 = fieldNorm(doc=2232)
0.2 = coord(1/5)
- Abstract
- Auto-Graphics, California, has been chosen to establish an Internet and WWW accessible catalogue that combines the holdings the state Library of Ohio and 4 regional libraries for the purpose of sharing resources among more than 100 of the state's 250 public library systems. The company has also been selected by the North Suburban Library System, a consortium of 600 public, school academic and special libraries in the suburbs of Chicago. The AccessOhio project utilizes the Ohio Public Library Information Network
-
Hirawa, M.: Role of keywords in the network searching era (1998)
0.01
0.00745587 = product of:
0.03727935 = sum of:
0.03727935 = weight(_text_:system in 3446) [ClassicSimilarity], result of:
0.03727935 = score(doc=3446,freq=2.0), product of:
0.13391352 = queryWeight, product of:
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.04251826 = queryNorm
0.27838376 = fieldWeight in 3446, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.0625 = fieldNorm(doc=3446)
0.2 = coord(1/5)
- Abstract
- A survey of Japanese OPACs available on the Internet was conducted relating to use of keywords for subject access. The findings suggest that present OPACs are not capable of storing subject-oriented information. Currently available keyword access derives from a merely title-based retrieval system. Contents data should be added to bibliographic records as an efficient way of providing subject access, and costings for this process should be estimated. Word standardisation issues must also be addressed
-
Mowat, I.R.M.: ¬A national union catalogue : the ? edition (1996)
0.01
0.006523886 = product of:
0.03261943 = sum of:
0.03261943 = weight(_text_:system in 7227) [ClassicSimilarity], result of:
0.03261943 = score(doc=7227,freq=2.0), product of:
0.13391352 = queryWeight, product of:
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.04251826 = queryNorm
0.2435858 = fieldWeight in 7227, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.0546875 = fieldNorm(doc=7227)
0.2 = coord(1/5)
- Abstract
- Reports briefly on the development, by the Consortium of University Research Libraries (CURL) of the CURL OPAC, or COPAC. COPAC is seen as the partial realization of the aims of earlier projects, such as the UK Libraries Database System (UKLDS). Although COPAC was not designed as a union catalogue, it was a natural next step for CURL to obtain funding from the Joint Information Services Committee (JISC), following the Follett Report, to use the database to create a union catalogue. The work is being undertaken at Manchester University, which has held the CURL database since its creation, and the version was launched on 30 Apr 96
-
Harmsen, B.: Adding value to Web-OPACs (2000)
0.01
0.0062004575 = product of:
0.031002287 = sum of:
0.031002287 = product of:
0.09300686 = sum of:
0.09300686 = weight(_text_:29 in 4672) [ClassicSimilarity], result of:
0.09300686 = score(doc=4672,freq=2.0), product of:
0.14956595 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.04251826 = queryNorm
0.6218451 = fieldWeight in 4672, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.125 = fieldNorm(doc=4672)
0.33333334 = coord(1/3)
0.2 = coord(1/5)
- Date
- 28. 3.2002 10:08:29
-
Cousins, S.A.: COPAC: the new national OPAC service based on the CURL database (1997)
0.01
0.0055919024 = product of:
0.027959513 = sum of:
0.027959513 = weight(_text_:system in 2834) [ClassicSimilarity], result of:
0.027959513 = score(doc=2834,freq=2.0), product of:
0.13391352 = queryWeight, product of:
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.04251826 = queryNorm
0.20878783 = fieldWeight in 2834, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.046875 = fieldNorm(doc=2834)
0.2 = coord(1/5)
- Abstract
- Presents a brief description of the operation of COPAC, the new OPAC providing a unified interface to the consolidated database and online catalogues of the UK's Consortium of University Research Libraries (CURL). COPAC is seen as the partial realization of the aims of earlier projects, such as the UK Libraries Database System (UKLDS). Provides a brief overview of the background to the CURL OPAC and the COPAC project, describing the main content of the COPAC database. Considers the effect of having multiple contributors to the database and the inevitable need for deduplication and record consolidation to cope with the inevitable record duplication. COPAC is accessible via a text interface and a WWW interface. Discusses each interface using example screens to illustrate the search process
-
Novotny, E,: I don't think I click : a protocol analysis study of use of a library online catalog in the Internet age (2004)
0.01
0.0055919024 = product of:
0.027959513 = sum of:
0.027959513 = weight(_text_:system in 3103) [ClassicSimilarity], result of:
0.027959513 = score(doc=3103,freq=2.0), product of:
0.13391352 = queryWeight, product of:
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.04251826 = queryNorm
0.20878783 = fieldWeight in 3103, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.046875 = fieldNorm(doc=3103)
0.2 = coord(1/5)
- Abstract
- There's something magical about interface design. The research done to determine user behavior that leads to design decisions is positively fascinating. This time round we have a group at Penn State testing the proficiency of users on their brand new OPAC. The users were divided into two groups, "experienced" and "first-time". Results confirm other studies in this area, namely, that when confronting an OPAC, users both experienced and not, assume they're in front of something similar to Google. They go for keywords by default, expect results ranked by relevancy (as opposed to chronology), make no use of Boolean Operators, have no idea of what information is actually indexed, and lack the curiosity or time to "learn the system". "We can either abandon this population," the author stresses, "or design systems that do not require expert knowledge to be used effectively.
-
Dierolf, U.: Internet: UB Karlsruhe erweitert Dienste vom WWW-Katalog zur WWW-Ausleihe (1996)
0.01
0.0054254006 = product of:
0.027127001 = sum of:
0.027127001 = product of:
0.081381 = sum of:
0.081381 = weight(_text_:29 in 3652) [ClassicSimilarity], result of:
0.081381 = score(doc=3652,freq=2.0), product of:
0.14956595 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.04251826 = queryNorm
0.5441145 = fieldWeight in 3652, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.109375 = fieldNorm(doc=3652)
0.33333334 = coord(1/3)
0.2 = coord(1/5)
- Date
- 29. 3.1996 16:52:32
-
Ihadjadene, M.; Bouché, R.; Zâafrani, R.: ¬The dynamic nature of searching and browsing on Web-OPACs : the CATHIE experience (2000)
0.00
0.0046599186 = product of:
0.023299592 = sum of:
0.023299592 = weight(_text_:system in 118) [ClassicSimilarity], result of:
0.023299592 = score(doc=118,freq=2.0), product of:
0.13391352 = queryWeight, product of:
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.04251826 = queryNorm
0.17398985 = fieldWeight in 118, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1495528 = idf(docFreq=5152, maxDocs=44218)
0.0390625 = fieldNorm(doc=118)
0.2 = coord(1/5)
- Abstract
- The paradigm shift from the old system centered view to a user centered approach involves new tools needed for accessing library resources under the condition that the user's needs are taken into account. An end-user, who has only a little knowledge of classification systems or thesauri, understands little of the mode of the representation of contents and the use of authority lists. In addition, he will have difficulty in formulating his question in a precise manner. He needs to know better what the library proposes in order to define of what use it would be for him. Many studies have been carried out on the use of controlled vocabularies (classification, authority lists, thesauri) as searching devices. It is surprising to find that relatively little attention has been given to the role of these tools in filtering and browsing processes. We have developed a prototype named CATHIE (CATalog Hypertextuel Interactif et Enrichi) that supports such filtering and interactive reformulation features
