-
Hider, P.: ¬The search value added by professional indexing to a bibliographic database (2018)
0.03
0.025093256 = product of:
0.075279765 = sum of:
0.075279765 = weight(_text_:resources in 4300) [ClassicSimilarity], result of:
0.075279765 = score(doc=4300,freq=8.0), product of:
0.18665522 = queryWeight, product of:
3.650338 = idf(docFreq=3122, maxDocs=44218)
0.051133685 = queryNorm
0.40330917 = fieldWeight in 4300, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
3.650338 = idf(docFreq=3122, maxDocs=44218)
0.0390625 = fieldNorm(doc=4300)
0.33333334 = coord(1/3)
- Abstract
- Gross et al. (2015) have demonstrated that about a quarter of hits would typically be lost to keyword searchers if contemporary academic library catalogs dropped their controlled subject headings. This article reports on an investigation of the search value that subject descriptors and identifiers assigned by professional indexers add to a bibliographic database, namely the Australian Education Index (AEI). First, a similar methodology to that developed by Gross et al. (2015) was applied, with keyword searches representing a range of educational topics run on the AEI database with and without its subject indexing. The results indicated that AEI users would also lose, on average, about a quarter of hits per query. Second, an alternative research design was applied in which an experienced literature searcher was asked to find resources on a set of educational topics on an AEI database stripped of its subject indexing and then asked to search for additional resources on the same topics after the subject indexing had been reinserted. In this study, the proportion of additional resources that would have been lost had it not been for the subject indexing was again found to be about a quarter of the total resources found for each topic, on average.
-
Ashford, J.H.: Full text retrieval in document management : a review (1995)
0.02
0.024205469 = product of:
0.072616406 = sum of:
0.072616406 = product of:
0.14523281 = sum of:
0.14523281 = weight(_text_:management in 2054) [ClassicSimilarity], result of:
0.14523281 = score(doc=2054,freq=16.0), product of:
0.17235184 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.051133685 = queryNorm
0.8426531 = fieldWeight in 2054, product of:
4.0 = tf(freq=16.0), with freq of:
16.0 = termFreq=16.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.0625 = fieldNorm(doc=2054)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Abstract
- Full text management which applied to document management tends to be centred on text storage and retrieval. Recent developments are concerned with integration with relational database management system products to deliver document management services offering both the flexibility of text retrieval and the ability to support process based funnctions. There has been a move towards client server architectures, more user friendly user interfaces and more flexible and easier to understand retrieval. Advocates caution in choosing tasks for full text methods. Identifies document management functions for which the combined use of database management systems or special purpose tools should be considered
- Source
- Information management and technology. 28(1995) no.1, S.28-32
-
Hider, P.: ¬The search value added by professional indexing to a bibliographic database (2017)
0.02
0.021731397 = product of:
0.06519419 = sum of:
0.06519419 = weight(_text_:resources in 3868) [ClassicSimilarity], result of:
0.06519419 = score(doc=3868,freq=6.0), product of:
0.18665522 = queryWeight, product of:
3.650338 = idf(docFreq=3122, maxDocs=44218)
0.051133685 = queryNorm
0.349276 = fieldWeight in 3868, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.650338 = idf(docFreq=3122, maxDocs=44218)
0.0390625 = fieldNorm(doc=3868)
0.33333334 = coord(1/3)
- Abstract
- Gross et al. (2015) have demonstrated that about a quarter of hits would typically be lost to keyword searchers if contemporary academic library catalogs dropped their controlled subject headings. This paper reports on an analysis of the loss levels that would result if a bibliographic database, namely the Australian Education Index (AEI), were missing the subject descriptors and identifiers assigned by its professional indexers, employing the methodology developed by Gross and Taylor (2005), and later by Gross et al. (2015). The results indicate that AEI users would lose a similar proportion of hits per query to that experienced by library catalog users: on average, 27% of the resources found by a sample of keyword queries on the AEI database would not have been found without the subject indexing, based on the Australian Thesaurus of Education Descriptors (ATED). The paper also discusses the methodological limitations of these studies, pointing out that real-life users might still find some of the resources missed by a particular query through follow-up searches, while additional resources might also be found through iterative searching on the subject vocabulary. The paper goes on to describe a new research design, based on a before - and - after experiment, which addresses some of these limitations. It is argued that this alternative design will provide a more realistic picture of the value that professionally assigned subject indexing and controlled subject vocabularies can add to literature searching of a more scholarly and thorough kind.
-
Tenopir, C.; Ro, J.S.: Full text databases (1990)
0.01
0.014976369 = product of:
0.044929106 = sum of:
0.044929106 = product of:
0.08985821 = sum of:
0.08985821 = weight(_text_:management in 1916) [ClassicSimilarity], result of:
0.08985821 = score(doc=1916,freq=2.0), product of:
0.17235184 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.051133685 = queryNorm
0.521365 = fieldWeight in 1916, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.109375 = fieldNorm(doc=1916)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Series
- New directions in information management; 21
-
Laegreid, J.A.: SIFT: a Norwegian information retrieval system (1993)
0.01
0.009237211 = product of:
0.027711634 = sum of:
0.027711634 = product of:
0.055423267 = sum of:
0.055423267 = weight(_text_:22 in 7701) [ClassicSimilarity], result of:
0.055423267 = score(doc=7701,freq=2.0), product of:
0.17906146 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051133685 = queryNorm
0.30952093 = fieldWeight in 7701, 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=7701)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Date
- 23. 1.1999 19:22:09
-
Reinisch, F.: Wer suchet - der findet? : oder Die Überwindung der sprachlichen Grenzen bei der Suche in Volltextdatenbanken (2000)
0.01
0.009237211 = product of:
0.027711634 = sum of:
0.027711634 = product of:
0.055423267 = sum of:
0.055423267 = weight(_text_:22 in 4919) [ClassicSimilarity], result of:
0.055423267 = score(doc=4919,freq=2.0), product of:
0.17906146 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051133685 = queryNorm
0.30952093 = fieldWeight in 4919, 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=4919)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Date
- 22. 7.2000 17:48:06
-
Zillmann, H.: OSIRIS und eLib : Information Retrieval und Search Engines in Full-text Databases (2001)
0.01
0.009237211 = product of:
0.027711634 = sum of:
0.027711634 = product of:
0.055423267 = sum of:
0.055423267 = weight(_text_:22 in 5937) [ClassicSimilarity], result of:
0.055423267 = score(doc=5937,freq=2.0), product of:
0.17906146 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051133685 = queryNorm
0.30952093 = fieldWeight in 5937, 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=5937)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Date
- 14. 6.2001 12:22:31
-
Dambeck, H.; Engler, T.: Gesucht und gefunden : Neun Volltext-Suchprogramme für den Desktop (2002)
0.01
0.009237211 = product of:
0.027711634 = sum of:
0.027711634 = product of:
0.055423267 = sum of:
0.055423267 = weight(_text_:22 in 1169) [ClassicSimilarity], result of:
0.055423267 = score(doc=1169,freq=2.0), product of:
0.17906146 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051133685 = queryNorm
0.30952093 = fieldWeight in 1169, 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=1169)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Source
- c't. 2002, H.22, S.190-197
-
Molto, M.: Improving full text search performance through textual analysis (1993)
0.01
0.008557925 = product of:
0.025673775 = sum of:
0.025673775 = product of:
0.05134755 = sum of:
0.05134755 = weight(_text_:management in 5099) [ClassicSimilarity], result of:
0.05134755 = score(doc=5099,freq=2.0), product of:
0.17235184 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.051133685 = queryNorm
0.29792285 = fieldWeight in 5099, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.0625 = fieldNorm(doc=5099)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Source
- Information processing and management. 29(1993) no.5, S.614-632
-
Kristensen, J.: Expanding end-users' query statements for free text searching with a search-aid thesaurus (1993)
0.01
0.008557925 = product of:
0.025673775 = sum of:
0.025673775 = product of:
0.05134755 = sum of:
0.05134755 = weight(_text_:management in 6621) [ClassicSimilarity], result of:
0.05134755 = score(doc=6621,freq=2.0), product of:
0.17235184 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.051133685 = queryNorm
0.29792285 = fieldWeight in 6621, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.0625 = fieldNorm(doc=6621)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Source
- Information processing and management. 29(1993) no.6, S.733-744
-
Blair, D.C.; Maron, M.E.: Full-text information retrieval : further analysis and clarification (1990)
0.01
0.008557925 = product of:
0.025673775 = sum of:
0.025673775 = product of:
0.05134755 = sum of:
0.05134755 = weight(_text_:management in 2046) [ClassicSimilarity], result of:
0.05134755 = score(doc=2046,freq=2.0), product of:
0.17235184 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.051133685 = queryNorm
0.29792285 = fieldWeight in 2046, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.0625 = fieldNorm(doc=2046)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Source
- Information processing and management. 26(1990), S.437-447
-
Turtle, H.; Flood, J.: Query evaluation : strategies and optimizations (1995)
0.01
0.008557925 = product of:
0.025673775 = sum of:
0.025673775 = product of:
0.05134755 = sum of:
0.05134755 = weight(_text_:management in 4087) [ClassicSimilarity], result of:
0.05134755 = score(doc=4087,freq=2.0), product of:
0.17235184 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.051133685 = queryNorm
0.29792285 = fieldWeight in 4087, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.0625 = fieldNorm(doc=4087)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Source
- Information processing and management. 31(1995) no.6, S.831-850
-
Magennis, M.: Expert rule-based query expansion (1995)
0.01
0.0074881846 = product of:
0.022464553 = sum of:
0.022464553 = product of:
0.044929106 = sum of:
0.044929106 = weight(_text_:management in 5181) [ClassicSimilarity], result of:
0.044929106 = score(doc=5181,freq=2.0), product of:
0.17235184 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.051133685 = queryNorm
0.2606825 = fieldWeight in 5181, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.0546875 = fieldNorm(doc=5181)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Source
- New review of document and text management. 1995, no.1, S.63-83
-
Melucci, M.: Passage retrieval : a probabilistic technique (1998)
0.01
0.0074881846 = product of:
0.022464553 = sum of:
0.022464553 = product of:
0.044929106 = sum of:
0.044929106 = weight(_text_:management in 1150) [ClassicSimilarity], result of:
0.044929106 = score(doc=1150,freq=2.0), product of:
0.17235184 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.051133685 = queryNorm
0.2606825 = fieldWeight in 1150, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.0546875 = fieldNorm(doc=1150)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Source
- Information processing and management. 34(1998) no.1, S.43-68
-
Shewale, N.G.: Information delivery of full-text databases in academic and research libraries using hypermedia (1998)
0.01
0.0074881846 = product of:
0.022464553 = sum of:
0.022464553 = product of:
0.044929106 = sum of:
0.044929106 = weight(_text_:management in 3566) [ClassicSimilarity], result of:
0.044929106 = score(doc=3566,freq=2.0), product of:
0.17235184 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.051133685 = queryNorm
0.2606825 = fieldWeight in 3566, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.0546875 = fieldNorm(doc=3566)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Source
- Information management in academic and research libraries: Proceedings of the 5th National convention for Automation of Libraries in Education and Research (CALIBER-98), Bhubaneswar, India, 4-5 March 1998. Ed. by M. Mahapatra et al
-
Sievert, M.E.; McKinin, E.J.: Why full-text misses some relevant documents : an analysis of documents not retrieved by CCML or MEDIS (1989)
0.01
0.0069279084 = product of:
0.020783724 = sum of:
0.020783724 = product of:
0.04156745 = sum of:
0.04156745 = weight(_text_:22 in 3564) [ClassicSimilarity], result of:
0.04156745 = score(doc=3564,freq=2.0), product of:
0.17906146 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.051133685 = queryNorm
0.23214069 = fieldWeight in 3564, 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=3564)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Date
- 9. 1.1996 10:22:31
-
Pirkola, A.; Jarvelin, K.: ¬The effect of anaphor and ellipsis resolution on proximity searching in a text database (1995)
0.01
0.005348703 = product of:
0.016046109 = sum of:
0.016046109 = product of:
0.032092217 = sum of:
0.032092217 = weight(_text_:management in 4088) [ClassicSimilarity], result of:
0.032092217 = score(doc=4088,freq=2.0), product of:
0.17235184 = queryWeight, product of:
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.051133685 = queryNorm
0.18620178 = fieldWeight in 4088, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3706124 = idf(docFreq=4130, maxDocs=44218)
0.0390625 = fieldNorm(doc=4088)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Source
- Information processing and management. 32(1996) no.2, S.199-216
