-
Shiri, A.A.; Revie, C.; Chowdhury, G.: Thesaurus-enhanced search interfaces (2002)
0.04
0.0430834 = product of:
0.10052793 = sum of:
0.015377128 = weight(_text_:information in 3807) [ClassicSimilarity], result of:
0.015377128 = score(doc=3807,freq=2.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.23274569 = fieldWeight in 3807, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.09375 = fieldNorm(doc=3807)
0.064569265 = weight(_text_:retrieval in 3807) [ClassicSimilarity], result of:
0.064569265 = score(doc=3807,freq=4.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.5671716 = fieldWeight in 3807, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.09375 = fieldNorm(doc=3807)
0.020581532 = product of:
0.061744597 = sum of:
0.061744597 = weight(_text_:29 in 3807) [ClassicSimilarity], result of:
0.061744597 = score(doc=3807,freq=2.0), product of:
0.13239008 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.037635546 = queryNorm
0.46638384 = fieldWeight in 3807, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.09375 = fieldNorm(doc=3807)
0.33333334 = coord(1/3)
0.42857143 = coord(3/7)
- Date
- 18. 5.2002 17:29:00
- Source
- Journal of information science. 28(2002) no.2, S.111-122
- Theme
- Verbale Doksprachen im Online-Retrieval
Semantisches Umfeld in Indexierung u. Retrieval
-
Chan, L.M.; Hodges, T.: Entering the millennium : a new century for LCSH (2000)
0.03
0.034693338 = product of:
0.08095112 = sum of:
0.007688564 = weight(_text_:information in 5920) [ClassicSimilarity], result of:
0.007688564 = score(doc=5920,freq=2.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.116372846 = fieldWeight in 5920, 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=5920)
0.032284632 = weight(_text_:retrieval in 5920) [ClassicSimilarity], result of:
0.032284632 = score(doc=5920,freq=4.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.2835858 = fieldWeight in 5920, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.046875 = fieldNorm(doc=5920)
0.04097792 = product of:
0.06146688 = sum of:
0.030872298 = weight(_text_:29 in 5920) [ClassicSimilarity], result of:
0.030872298 = score(doc=5920,freq=2.0), product of:
0.13239008 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.037635546 = queryNorm
0.23319192 = fieldWeight in 5920, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.046875 = fieldNorm(doc=5920)
0.030594582 = weight(_text_:22 in 5920) [ClassicSimilarity], result of:
0.030594582 = score(doc=5920,freq=2.0), product of:
0.13179328 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.037635546 = queryNorm
0.23214069 = fieldWeight in 5920, 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=5920)
0.6666667 = coord(2/3)
0.42857143 = coord(3/7)
- Abstract
- Library of Congress Subject Headings (LCSH), a system originally designed as a tool for subject access to the Library's own collection in the late nineteenth century, has become, in the course of the last century, the main subject retrieval tool in library catalogs throughout the United States and in many other countries. It is one of the largest non-specialized controlled vocabularies in the world. As LCSH enters a new century, it faces an information environment that has undergone vast changes from what had prevailed when LCSH began, or, indeed, from its state in the early days of the online age. In order to continue its mission and to be useful in spheres outside library catalogs as well, LCSH must adapt to the multifarious environment. One possible approach is to adopt a series of scalable and flexible syntax and application rules to meet the needs of different user communities
- Date
- 27. 5.2001 16:22:21
- Series
- Cataloging and classification quarterly; vol.29, nos.1/2
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Gilchrist, A.: ¬The thesaurus in retrieval (1971)
0.03
0.03395036 = product of:
0.118826255 = sum of:
0.025628544 = weight(_text_:information in 4593) [ClassicSimilarity], result of:
0.025628544 = score(doc=4593,freq=8.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.38790947 = fieldWeight in 4593, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.078125 = fieldNorm(doc=4593)
0.09319771 = weight(_text_:retrieval in 4593) [ClassicSimilarity], result of:
0.09319771 = score(doc=4593,freq=12.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.81864166 = fieldWeight in 4593, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.078125 = fieldNorm(doc=4593)
0.2857143 = coord(2/7)
- LCSH
- Information retrieval
- RSWK
- Schlagwortnormdatei / Information Retrieval
- Subject
- Schlagwortnormdatei / Information Retrieval
Information retrieval
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Miller, U.; Teitelbaum, R.: Pre-coordination and post-coordination : past and future (2002)
0.03
0.032604165 = product of:
0.07607639 = sum of:
0.017939983 = weight(_text_:information in 1395) [ClassicSimilarity], result of:
0.017939983 = score(doc=1395,freq=8.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.27153665 = fieldWeight in 1395, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=1395)
0.046130512 = weight(_text_:retrieval in 1395) [ClassicSimilarity], result of:
0.046130512 = score(doc=1395,freq=6.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.40520695 = fieldWeight in 1395, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.0546875 = fieldNorm(doc=1395)
0.0120058935 = product of:
0.03601768 = sum of:
0.03601768 = weight(_text_:29 in 1395) [ClassicSimilarity], result of:
0.03601768 = score(doc=1395,freq=2.0), product of:
0.13239008 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.037635546 = queryNorm
0.27205724 = fieldWeight in 1395, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.0546875 = fieldNorm(doc=1395)
0.33333334 = coord(1/3)
0.42857143 = coord(3/7)
- Abstract
- This article deals with the meaningful processing of information in relation to two systems of Information processing: pre-coordination and post-coordination. The different approaches are discussed, with emphasis an the need for a controlled vocabulary in information retrieval. Assigned indexing, which employs a controlled vocabulary, is described in detail. Types of indexing language can be divided into two broad groups - those using pre-coordinated terms and those depending an post-coordination. They represent two different basic approaches in processing and Information retrieval. The historical development of these two approaches is described, as well as the two tools that apply to these approaches: thesauri and subject headings.
- Source
- Knowledge organization. 29(2002) no.2, S.87-93
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Hjoerland, B.; Kyllesbech Nielsen, L.: Subject access points in electronic retrieval (2001)
0.03
0.031486005 = product of:
0.11020101 = sum of:
0.017939983 = weight(_text_:information in 3826) [ClassicSimilarity], result of:
0.017939983 = score(doc=3826,freq=2.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.27153665 = fieldWeight in 3826, 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=3826)
0.092261024 = weight(_text_:retrieval in 3826) [ClassicSimilarity], result of:
0.092261024 = score(doc=3826,freq=6.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.8104139 = fieldWeight in 3826, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.109375 = fieldNorm(doc=3826)
0.2857143 = coord(2/7)
- Source
- Annual review of information science and technology. 35(2001), S.249-298
- Theme
- Klassifikationssysteme im Online-Retrieval
Verbale Doksprachen im Online-Retrieval
-
Mu, X.; Lu, K.; Ryu, H.: Explicitly integrating MeSH thesaurus help into health information retrieval systems : an empirical user study (2014)
0.03
0.028046215 = product of:
0.06544117 = sum of:
0.014326792 = weight(_text_:information in 2703) [ClassicSimilarity], result of:
0.014326792 = score(doc=2703,freq=10.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.21684799 = fieldWeight in 2703, 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=2703)
0.04253874 = weight(_text_:retrieval in 2703) [ClassicSimilarity], result of:
0.04253874 = score(doc=2703,freq=10.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.37365708 = fieldWeight in 2703, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.0390625 = fieldNorm(doc=2703)
0.008575639 = product of:
0.025726916 = sum of:
0.025726916 = weight(_text_:29 in 2703) [ClassicSimilarity], result of:
0.025726916 = score(doc=2703,freq=2.0), product of:
0.13239008 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.037635546 = queryNorm
0.19432661 = fieldWeight in 2703, 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=2703)
0.33333334 = coord(1/3)
0.42857143 = coord(3/7)
- Abstract
- When consumers search for health information, a major obstacle is their unfamiliarity with the medical terminology. Even though medical thesauri such as the Medical Subject Headings (MeSH) and related tools (e.g., the MeSH Browser) were created to help consumers find medical term definitions, the lack of direct and explicit integration of these help tools into a health retrieval system prevented them from effectively achieving their objectives. To explore this issue, we conducted an empirical study with two systems: One is a simple interface system supporting query-based searching; the other is an augmented system with two new components supporting MeSH term searching and MeSH tree browsing. A total of 45 subjects were recruited to participate in the study. The results indicated that the augmented system is more effective than the simple system in terms of improving user-perceived topic familiarity and question-answer performance, even though we did not find users spend more time on the augmented system. The two new MeSH help components played a critical role in participants' health information retrieval and were found to allow them to develop new search strategies. The findings of the study enhanced our understanding of consumers' search behaviors and shed light on the design of future health information retrieval systems.
- Date
- 25. 1.2016 18:43:29
- Source
- Information processing and management. 50(2014) no.1, S.24-40
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Hauffe, H.: Sacherschließung bibliographischer Datenbanken und ihre Nutzung im Information Retrieval : Vortrag anläßlich der Tagung 'Automatisierte Sacherschließung - Status und Trends, Schloß Hofen, Lochau bei Bregenz, 17.4.-20.4.1989.
0.03
0.026988003 = product of:
0.09445801 = sum of:
0.015377128 = weight(_text_:information in 891) [ClassicSimilarity], result of:
0.015377128 = score(doc=891,freq=2.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.23274569 = fieldWeight in 891, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.09375 = fieldNorm(doc=891)
0.07908088 = weight(_text_:retrieval in 891) [ClassicSimilarity], result of:
0.07908088 = score(doc=891,freq=6.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.6946405 = fieldWeight in 891, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.09375 = fieldNorm(doc=891)
0.2857143 = coord(2/7)
- Theme
- Klassifikationssysteme im Online-Retrieval
Verbale Doksprachen im Online-Retrieval
-
O'Neill, E.T.; Bennett, R.; Kammerer, K.: Using authorities to improve subject searches (2012)
0.02
0.02465133 = product of:
0.05751977 = sum of:
0.007688564 = weight(_text_:information in 310) [ClassicSimilarity], result of:
0.007688564 = score(doc=310,freq=2.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.116372846 = fieldWeight in 310, 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=310)
0.03954044 = weight(_text_:retrieval in 310) [ClassicSimilarity], result of:
0.03954044 = score(doc=310,freq=6.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.34732026 = fieldWeight in 310, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.046875 = fieldNorm(doc=310)
0.010290766 = product of:
0.030872298 = sum of:
0.030872298 = weight(_text_:29 in 310) [ClassicSimilarity], result of:
0.030872298 = score(doc=310,freq=2.0), product of:
0.13239008 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.037635546 = queryNorm
0.23319192 = fieldWeight in 310, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.046875 = fieldNorm(doc=310)
0.33333334 = coord(1/3)
0.42857143 = coord(3/7)
- Abstract
- Authority files have played an important role in improving the quality of indexing and subject cataloging. Although authorities can significantly improve search by increasing the number of access points, they are rarely an integral part of the information retrieval process, particularly end-users searches. A retrieval prototype, searchFAST, was developed to test the feasibility of using an authority file as an index to bibliographic records. searchFAST uses FAST (Faceted Application of Subject Terminology) as an index to OCLC's WorldCat.org bibliographic database. The searchFAST methodology complements, rather than replaces, existing WorldCat.org access. The bibliographic file is searched indirectly; first the authority file is searched to identify appropriate subject headings, then the headings are used to retrieve the matching bibliographic records. The prototype demonstrates the effectiveness and practicality of using an authority file as an index. Searching the authority file leverages authority control work by increasing the number of access points while supporting a simple interface designed for end-users.
- Date
- 29. 5.2015 20:57:41
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Cochrane, P.A.: Indexing and searching thesauri, the Janus or Proteus of information retrieval (1992)
0.02
0.022841828 = product of:
0.07994639 = sum of:
0.015377128 = weight(_text_:information in 2098) [ClassicSimilarity], result of:
0.015377128 = score(doc=2098,freq=2.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.23274569 = fieldWeight in 2098, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.09375 = fieldNorm(doc=2098)
0.064569265 = weight(_text_:retrieval in 2098) [ClassicSimilarity], result of:
0.064569265 = score(doc=2098,freq=4.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.5671716 = fieldWeight in 2098, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.09375 = fieldNorm(doc=2098)
0.2857143 = coord(2/7)
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Anderson, J.D.: Indexing and classification : file organization and display for information retrieval (1989)
0.02
0.022490004 = product of:
0.07871501 = sum of:
0.012814272 = weight(_text_:information in 873) [ClassicSimilarity], result of:
0.012814272 = score(doc=873,freq=2.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.19395474 = fieldWeight in 873, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.078125 = fieldNorm(doc=873)
0.065900736 = weight(_text_:retrieval in 873) [ClassicSimilarity], result of:
0.065900736 = score(doc=873,freq=6.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.5788671 = fieldWeight in 873, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.078125 = fieldNorm(doc=873)
0.2857143 = coord(2/7)
- Theme
- Klassifikationssysteme im Online-Retrieval
Verbale Doksprachen im Online-Retrieval
-
Informatics 10: prospects for intelligent retrieval : Proc. of a conference jointly sponsored by Aslib, the Aslib Informatics Group and the Information Retrieval Specialist Group of the British Computer Society, King's College, Cambridge, 21.-23.3.1989 (1990)
0.02
0.022490004 = product of:
0.07871501 = sum of:
0.012814272 = weight(_text_:information in 2184) [ClassicSimilarity], result of:
0.012814272 = score(doc=2184,freq=2.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.19395474 = fieldWeight in 2184, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.078125 = fieldNorm(doc=2184)
0.065900736 = weight(_text_:retrieval in 2184) [ClassicSimilarity], result of:
0.065900736 = score(doc=2184,freq=6.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.5788671 = fieldWeight in 2184, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.078125 = fieldNorm(doc=2184)
0.2857143 = coord(2/7)
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Hildreth, C.R.: Intelligent interfaces and retrieval methods for subject searching in bibliographic retrieval systems (1989)
0.02
0.022490004 = product of:
0.07871501 = sum of:
0.012814272 = weight(_text_:information in 2306) [ClassicSimilarity], result of:
0.012814272 = score(doc=2306,freq=2.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.19395474 = fieldWeight in 2306, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.078125 = fieldNorm(doc=2306)
0.065900736 = weight(_text_:retrieval in 2306) [ClassicSimilarity], result of:
0.065900736 = score(doc=2306,freq=6.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.5788671 = fieldWeight in 2306, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.078125 = fieldNorm(doc=2306)
0.2857143 = coord(2/7)
- Series
- Advances in library information technology; 2
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Blair, D.C.: Language and representation in information retrieval (1991)
0.02
0.022121262 = product of:
0.077424414 = sum of:
0.018481007 = weight(_text_:information in 1545) [ClassicSimilarity], result of:
0.018481007 = score(doc=1545,freq=26.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.2797255 = fieldWeight in 1545, product of:
5.0990195 = tf(freq=26.0), with freq of:
26.0 = termFreq=26.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.03125 = fieldNorm(doc=1545)
0.058943406 = weight(_text_:retrieval in 1545) [ClassicSimilarity], result of:
0.058943406 = score(doc=1545,freq=30.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.51775444 = fieldWeight in 1545, product of:
5.477226 = tf(freq=30.0), with freq of:
30.0 = termFreq=30.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.03125 = fieldNorm(doc=1545)
0.2857143 = coord(2/7)
- Abstract
- Information or Document Retrieval is the subject of this book. It is not an introductory book, although it is self-contained in the sense that it is not necessary to have a background in the theory or practice of Information Retrieval in order to understand its arguments. The book presents, as clearly as possible, one particular perspective on Information Retrieval, and attempts to say that certain aspects of the theory or practice of the management of documents are more important than others. The majority of Information Retrieval research has been aimed at the more experimentally tractable small-scale systems, and although much of that work has added greatly to our understanding of Information Retrieval it is becoming increasingly apparent that retrieval systems with large data bases of documents are a fundamentally different genre of systems than small-scale systems. If this is so, which is the thesis of this book, then we must now study large information retrieval systems with the same rigor and intensity that we once studied small-scale systems. Hegel observed that the quantitative growth of any system caused qualitative changes to take place in its structure and processes.
- COMPASS
- Information retrieval
- LCSH
- Information Retrieval
- RSWK
- Information Retrieval
- Subject
- Information retrieval
Information Retrieval
Information Retrieval
- Theme
- Verbale Doksprachen im Online-Retrieval
-
DeHart, F.E.; Glazier, J.: Computer searching on PRECIS : an exploration of measuring comparative retrieval effectiveness (1984)
0.02
0.02063992 = product of:
0.07223972 = sum of:
0.012685482 = weight(_text_:information in 828) [ClassicSimilarity], result of:
0.012685482 = score(doc=828,freq=4.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.1920054 = fieldWeight in 828, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=828)
0.059554238 = weight(_text_:retrieval in 828) [ClassicSimilarity], result of:
0.059554238 = score(doc=828,freq=10.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.5231199 = fieldWeight in 828, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.0546875 = fieldNorm(doc=828)
0.2857143 = coord(2/7)
- Abstract
- Designing research on the retrieval effectiveness of computer searches on PRECIS compared with retrieval effectiveness of searches on other types of subject analysis used in computer-based information sources is a complex process. This paper explores the complexity of measuring comparative retrieval effectiveness through a comparison of the subject analysis provided by the PRECIS system for fifty articles with the subject analysis provided for the same articles by three computer-based information sources: ERIC/CIJE, LLBA/Online and PsycINFO. Objectives are: (1) to discover factors that should be taken into account when designing this type of research; and (2) to identify extraneous variables that work against internal validity in research design .
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Bates, M.J.: Subject access in online catalogs: a design model (1986)
0.02
0.020344833 = product of:
0.07120691 = sum of:
0.017939983 = weight(_text_:information in 120) [ClassicSimilarity], result of:
0.017939983 = score(doc=120,freq=2.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.27153665 = fieldWeight in 120, 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=120)
0.053266928 = weight(_text_:retrieval in 120) [ClassicSimilarity], result of:
0.053266928 = score(doc=120,freq=2.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.46789268 = fieldWeight in 120, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.109375 = fieldNorm(doc=120)
0.2857143 = coord(2/7)
- Source
- Journal of the American Society for Information Science. 37(1986), S.357-367
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Piternick, A.B.: Vocabularies for online subject searching (1990)
0.02
0.020344833 = product of:
0.07120691 = sum of:
0.017939983 = weight(_text_:information in 1330) [ClassicSimilarity], result of:
0.017939983 = score(doc=1330,freq=2.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.27153665 = fieldWeight in 1330, 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=1330)
0.053266928 = weight(_text_:retrieval in 1330) [ClassicSimilarity], result of:
0.053266928 = score(doc=1330,freq=2.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.46789268 = fieldWeight in 1330, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.109375 = fieldNorm(doc=1330)
0.2857143 = coord(2/7)
- Source
- Encyclopedia of library and information science. Vol.45, [=Suppl.10]
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Zeng, L.: Achieving compatibility of indexing languages in online access environment (1992)
0.02
0.020344833 = product of:
0.07120691 = sum of:
0.017939983 = weight(_text_:information in 1284) [ClassicSimilarity], result of:
0.017939983 = score(doc=1284,freq=2.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.27153665 = fieldWeight in 1284, 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=1284)
0.053266928 = weight(_text_:retrieval in 1284) [ClassicSimilarity], result of:
0.053266928 = score(doc=1284,freq=2.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.46789268 = fieldWeight in 1284, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.109375 = fieldNorm(doc=1284)
0.2857143 = coord(2/7)
- Source
- Encyclopedia of library and information science. Vol.50, [=Suppl.13]
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Bodoff, D.; Kambil, A.: Partial coordination : II. A preliminary evaluation and failure analysis (1998)
0.02
0.0190834 = product of:
0.06679189 = sum of:
0.010873271 = weight(_text_:information in 2323) [ClassicSimilarity], result of:
0.010873271 = score(doc=2323,freq=4.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.16457605 = fieldWeight in 2323, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=2323)
0.055918623 = weight(_text_:retrieval in 2323) [ClassicSimilarity], result of:
0.055918623 = score(doc=2323,freq=12.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.49118498 = fieldWeight in 2323, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.046875 = fieldNorm(doc=2323)
0.2857143 = coord(2/7)
- Abstract
- Partial coordination is a new method for cataloging documents for subject access. It is especially designed to enhance the precision of document searches in online environments. This article reports a preliminary evaluation of partial coordination that shows promising results compared with full-text retrieval. We also report the difficulties in empirically evaluating the effectiveness of automatic full-text retrieval in contrast to mixed methods such as partial coordination which combine human cataloging with computerized retrieval. Based on our study, we propose research in this area will substantially benefit from a common framework for failure analysis and a common data set. This will allow information retrieval researchers adapting 'library style'cataloging to large electronic document collections, as well as those developing automated or mixed methods, to directly compare their proposals for indexing and retrieval. This article concludes by suggesting guidelines for constructing such as testbed
- Source
- Journal of the American Society for Information Science. 49(1998) no.14, S.1270-1282
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Devadason, F.J.; Kumbhar, M.R.: Language and indexing language : Nalimor and Gardin revised (1988)
0.02
0.019034855 = product of:
0.06662199 = sum of:
0.012814272 = weight(_text_:information in 2852) [ClassicSimilarity], result of:
0.012814272 = score(doc=2852,freq=2.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.19395474 = fieldWeight in 2852, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.078125 = fieldNorm(doc=2852)
0.05380772 = weight(_text_:retrieval in 2852) [ClassicSimilarity], result of:
0.05380772 = score(doc=2852,freq=4.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.47264296 = fieldWeight in 2852, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.078125 = fieldNorm(doc=2852)
0.2857143 = coord(2/7)
- Abstract
- Studies the salient features of ordinary language as a means of designing languages for information storage and retrieval systems. Pays particular attention to the POPSI (Postulate-based Permuted Subject Indexing) language.
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Aluri, R.D.; Kemp, A.; Boll, J.J.: Subject analysis in online catalogs (1991)
0.02
0.018843547 = product of:
0.06595241 = sum of:
0.012685482 = weight(_text_:information in 863) [ClassicSimilarity], result of:
0.012685482 = score(doc=863,freq=4.0), product of:
0.066068366 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.037635546 = queryNorm
0.1920054 = fieldWeight in 863, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=863)
0.053266928 = weight(_text_:retrieval in 863) [ClassicSimilarity], result of:
0.053266928 = score(doc=863,freq=8.0), product of:
0.11384433 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.037635546 = queryNorm
0.46789268 = fieldWeight in 863, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.0546875 = fieldNorm(doc=863)
0.2857143 = coord(2/7)
- LCSH
- Information retrieval
- Subject
- Information retrieval
- Theme
- Klassifikationssysteme im Online-Retrieval
Verbale Doksprachen im Online-Retrieval
