-
Fidel, R.; Efthimiadis, E.N.: Terminological knowledge structure for intermediary expert systems (1995)
0.02
0.018342271 = product of:
0.08559726 = sum of:
0.028549349 = weight(_text_:classification in 5695) [ClassicSimilarity], result of:
0.028549349 = score(doc=5695,freq=4.0), product of:
0.09562149 = queryWeight, product of:
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.03002521 = queryNorm
0.29856625 = fieldWeight in 5695, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.046875 = fieldNorm(doc=5695)
0.02849856 = product of:
0.05699712 = sum of:
0.05699712 = weight(_text_:schemes in 5695) [ClassicSimilarity], result of:
0.05699712 = score(doc=5695,freq=2.0), product of:
0.16067243 = queryWeight, product of:
5.3512506 = idf(docFreq=569, maxDocs=44218)
0.03002521 = queryNorm
0.35474116 = fieldWeight in 5695, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.3512506 = idf(docFreq=569, maxDocs=44218)
0.046875 = fieldNorm(doc=5695)
0.5 = coord(1/2)
0.028549349 = weight(_text_:classification in 5695) [ClassicSimilarity], result of:
0.028549349 = score(doc=5695,freq=4.0), product of:
0.09562149 = queryWeight, product of:
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.03002521 = queryNorm
0.29856625 = fieldWeight in 5695, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.1847067 = idf(docFreq=4974, maxDocs=44218)
0.046875 = fieldNorm(doc=5695)
0.21428572 = coord(3/14)
- Abstract
- To provide advice for online searching about term selection and query expansion, an intermediary expert system should indicate a terminological knowledge structure. Terminological attributes could provide the foundation of a knowledge base, and knowledge acquisition could rely on knowledge base techniques coupled with statistical techniques. The strategies of expert searchers would provide 1 source of knowledge. The knowledge structure would include 3 constructs for each term: frequency data, a hedge, and a position in a classification scheme. Switching vocabularies could provide a meta-scheme and facilitate the interoperability of databases in similar subjects. To develop such knowledge structure, research should focus on terminological attributes, word and phrase disambiguation, automated text processing, and the role of thesauri and classification schemes in indexing and retrieval. It should develop techniques that combine knowledge base and statistical methods and that consider user preferences
-
Efthimiadis, E.N.; Neilson, C.: ¬A classified bibliography on online public access catalogues (1989)
0.00
0.0042866482 = product of:
0.060013074 = sum of:
0.060013074 = weight(_text_:subject in 509) [ClassicSimilarity], result of:
0.060013074 = score(doc=509,freq=4.0), product of:
0.10738805 = queryWeight, product of:
3.576596 = idf(docFreq=3361, maxDocs=44218)
0.03002521 = queryNorm
0.55884314 = fieldWeight in 509, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.576596 = idf(docFreq=3361, maxDocs=44218)
0.078125 = fieldNorm(doc=509)
0.071428575 = coord(1/14)
- Abstract
- Bibliography on all aspects of online public access catalogues, covering the period to 1988. Citations are listed in subject order supplemented by an author index. A description of the subject coverage, source of citations and how to use the bibliography is given in the introduction.
-
Efthimiadis, E.N.: ¬A study of end-user behaviour in searching CD-ROM bibliographic databases (1994)
0.00
0.002872974 = product of:
0.04022163 = sum of:
0.04022163 = weight(_text_:bibliographic in 8583) [ClassicSimilarity], result of:
0.04022163 = score(doc=8583,freq=2.0), product of:
0.11688946 = queryWeight, product of:
3.893044 = idf(docFreq=2449, maxDocs=44218)
0.03002521 = queryNorm
0.34409973 = fieldWeight in 8583, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.893044 = idf(docFreq=2449, maxDocs=44218)
0.0625 = fieldNorm(doc=8583)
0.071428575 = coord(1/14)
-
Efthimiadis, E.N.: Query expansion (1996)
0.00
0.0024248946 = product of:
0.033948522 = sum of:
0.033948522 = weight(_text_:subject in 4847) [ClassicSimilarity], result of:
0.033948522 = score(doc=4847,freq=2.0), product of:
0.10738805 = queryWeight, product of:
3.576596 = idf(docFreq=3361, maxDocs=44218)
0.03002521 = queryNorm
0.31612942 = fieldWeight in 4847, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.576596 = idf(docFreq=3361, maxDocs=44218)
0.0625 = fieldNorm(doc=4847)
0.071428575 = coord(1/14)
- Abstract
- State of the art review of query expansion (or term expansion) as the process of supplementing the original query with additional terms in order to improve retrieval performance. Research in the subject is presented in a highly structured way and is presented according to 3 types of query expansion; manual query expansion; automatic query expansion; and interactive query expansion
-
Efthimiadis, E.N.; Carlyle, A.: Organizing Internet resources : metadata and the Web (1997)
0.00
0.0024248946 = product of:
0.033948522 = sum of:
0.033948522 = weight(_text_:subject in 2561) [ClassicSimilarity], result of:
0.033948522 = score(doc=2561,freq=2.0), product of:
0.10738805 = queryWeight, product of:
3.576596 = idf(docFreq=3361, maxDocs=44218)
0.03002521 = queryNorm
0.31612942 = fieldWeight in 2561, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.576596 = idf(docFreq=3361, maxDocs=44218)
0.0625 = fieldNorm(doc=2561)
0.071428575 = coord(1/14)
- Abstract
- Introduces a special section on organizing Internet resources. Approaches based on fulltext indexing of the content of Internet sites are not an adequate solution for providing access to Internet resources. Adding metadata can provide an overview of a subject area and improve the user's ability to discriminate among similar sources. Introduces the articles in this section that explore issues associated with the provision of metadata
-
Efthimiadis, E.N.: End-users' understanding of thesaural knowledge structures in interactive query expansion (1994)
0.00
0.0011622861 = product of:
0.016272005 = sum of:
0.016272005 = product of:
0.03254401 = sum of:
0.03254401 = weight(_text_:22 in 5693) [ClassicSimilarity], result of:
0.03254401 = score(doc=5693,freq=2.0), product of:
0.10514317 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03002521 = queryNorm
0.30952093 = fieldWeight in 5693, 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=5693)
0.5 = coord(1/2)
0.071428575 = coord(1/14)
- Date
- 30. 3.2001 13:35:22
-
Efthimiadis, E.N.: User choices : a new yardstick for the evaluation of ranking algorithms for interactive query expansion (1995)
0.00
7.264289E-4 = product of:
0.010170003 = sum of:
0.010170003 = product of:
0.020340007 = sum of:
0.020340007 = weight(_text_:22 in 5697) [ClassicSimilarity], result of:
0.020340007 = score(doc=5697,freq=2.0), product of:
0.10514317 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03002521 = queryNorm
0.19345059 = fieldWeight in 5697, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=5697)
0.5 = coord(1/2)
0.071428575 = coord(1/14)
- Date
- 22. 2.1996 13:14:10
