-
Chandler, A.; LeBlanc, J.: Exploring the potential of a virtual undergraduate library collection based on the hierarchical interface to LC Classification (2006)
0.01
0.006543072 = product of:
0.019629216 = sum of:
0.019629216 = product of:
0.03925843 = sum of:
0.03925843 = weight(_text_:22 in 769) [ClassicSimilarity], result of:
0.03925843 = score(doc=769,freq=2.0), product of:
0.16911483 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.048293278 = queryNorm
0.23214069 = fieldWeight in 769, 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=769)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Date
- 10. 9.2000 17:38:22
-
Slavic, A.: On the nature and typology of documentary classifications and their use in a networked environment (2007)
0.01
0.006543072 = product of:
0.019629216 = sum of:
0.019629216 = product of:
0.03925843 = sum of:
0.03925843 = weight(_text_:22 in 780) [ClassicSimilarity], result of:
0.03925843 = score(doc=780,freq=2.0), product of:
0.16911483 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.048293278 = queryNorm
0.23214069 = fieldWeight in 780, 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=780)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Date
- 22.12.2007 17:22:31
-
Frâncu, V.; Sabo, C.-N.: Implementation of a UDC-based multilingual thesaurus in a library catalogue : the case of BiblioPhil (2010)
0.01
0.006543072 = product of:
0.019629216 = sum of:
0.019629216 = product of:
0.03925843 = sum of:
0.03925843 = weight(_text_:22 in 3697) [ClassicSimilarity], result of:
0.03925843 = score(doc=3697,freq=2.0), product of:
0.16911483 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.048293278 = queryNorm
0.23214069 = fieldWeight in 3697, 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=3697)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Date
- 22. 7.2010 20:40:56
-
Lardera, M.; Gnoli, C.; Rolandi, C.; Trzmielewski, M.: Developing SciGator, a DDC-based library browsing tool (2017)
0.01
0.006543072 = product of:
0.019629216 = sum of:
0.019629216 = product of:
0.03925843 = sum of:
0.03925843 = weight(_text_:22 in 4144) [ClassicSimilarity], result of:
0.03925843 = score(doc=4144,freq=2.0), product of:
0.16911483 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.048293278 = queryNorm
0.23214069 = fieldWeight in 4144, 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=4144)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Content
- Beitrag eines Special Issue: ISKO-Italy: 8' Incontro ISKO Italia, Università di Bologna, 22 maggio 2017, Bologna, Italia.
-
Chowdhury, S.; Chowdhury, G.G.: Using DDC to create a visual knowledge map as an aid to online information retrieval (2004)
0.01
0.0065360325 = product of:
0.019608097 = sum of:
0.019608097 = product of:
0.039216194 = sum of:
0.039216194 = weight(_text_:2002 in 2643) [ClassicSimilarity], result of:
0.039216194 = score(doc=2643,freq=2.0), product of:
0.20701107 = queryWeight, product of:
4.28654 = idf(docFreq=1652, maxDocs=44218)
0.048293278 = queryNorm
0.18944009 = fieldWeight in 2643, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.28654 = idf(docFreq=1652, maxDocs=44218)
0.03125 = fieldNorm(doc=2643)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Content
- 1. Introduction Web search engines and digital libraries usually expect the users to use search terms that most accurately represent their information needs. Finding the most appropriate search terms to represent an information need is an age old problem in information retrieval. Keyword or phrase search may produce good search results as long as the search terms or phrase(s) match those used by the authors and have been chosen for indexing by the concerned information retrieval system. Since this does not always happen, a large number of false drops are produced by information retrieval systems. The retrieval results become worse in very large systems that deal with millions of records, such as the Web search engines and digital libraries. Vocabulary control tools are used to improve the performance of text retrieval systems. Thesauri, the most common type of vocabulary control tool used in information retrieval, appeared in the late fifties, designed for use with the emerging post-coordinate indexing systems of that time. They are used to exert terminology control in indexing, and to aid in searching by allowing the searcher to select appropriate search terms. A large volume of literature exists describing the design features, and experiments with the use, of thesauri in various types of information retrieval systems (see for example, Furnas et.al., 1987; Bates, 1986, 1998; Milstead, 1997, and Shiri et al., 2002).
-
National Seminar on Classification in the Digital Environment : Papers contributed to the National Seminar an Classification in the Digital Environment, Bangalore, 9-11 August 2001 (2001)
0.00
0.0021810243 = product of:
0.0065430724 = sum of:
0.0065430724 = product of:
0.013086145 = sum of:
0.013086145 = weight(_text_:22 in 2047) [ClassicSimilarity], result of:
0.013086145 = score(doc=2047,freq=2.0), product of:
0.16911483 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.048293278 = queryNorm
0.07738023 = fieldWeight in 2047, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.015625 = fieldNorm(doc=2047)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Date
- 2. 1.2004 10:35:22
