-
Robertson, S.E.: On term selection for query expansion (1990)
0.01
0.012625597 = product of:
0.025251195 = sum of:
0.025251195 = product of:
0.05050239 = sum of:
0.05050239 = weight(_text_:b in 2650) [ClassicSimilarity], result of:
0.05050239 = score(doc=2650,freq=2.0), product of:
0.16126883 = queryWeight, product of:
3.542962 = idf(docFreq=3476, maxDocs=44218)
0.045518078 = queryNorm
0.31315655 = fieldWeight in 2650, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.542962 = idf(docFreq=3476, maxDocs=44218)
0.0625 = fieldNorm(doc=2650)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- In the framework of a relevance feedback system, term values or term weights may be used to (a) select new terms for inclusion in a query, and/or (b) weight the terms for retrieval purposes once selected. It has sometimes been assumed that the same weighting formula should be used for both purposes. This paper sketches a quantitative argument which suggests that the two purposes require different weighting formulae
-
Efthimiadis, E.N.: End-users' understanding of thesaural knowledge structures in interactive query expansion (1994)
0.01
0.012334143 = product of:
0.024668286 = sum of:
0.024668286 = product of:
0.04933657 = sum of:
0.04933657 = weight(_text_:22 in 5693) [ClassicSimilarity], result of:
0.04933657 = score(doc=5693,freq=2.0), product of:
0.15939656 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045518078 = 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)
0.5 = coord(1/2)
- Date
- 30. 3.2001 13:35:22
-
Fieldhouse, M.; Hancock-Beaulieu, M.: ¬The design of a graphical user interface for a highly interactive information retrieval system (1996)
0.01
0.010792375 = product of:
0.02158475 = sum of:
0.02158475 = product of:
0.0431695 = sum of:
0.0431695 = weight(_text_:22 in 6958) [ClassicSimilarity], result of:
0.0431695 = score(doc=6958,freq=2.0), product of:
0.15939656 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045518078 = queryNorm
0.2708308 = fieldWeight in 6958, 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=6958)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon
-
Chang, C.-H.; Hsu, C.-C.: Integrating query expansion and conceptual relevance feedback for personalized Web information retrieval (1998)
0.01
0.010792375 = product of:
0.02158475 = sum of:
0.02158475 = product of:
0.0431695 = sum of:
0.0431695 = weight(_text_:22 in 1319) [ClassicSimilarity], result of:
0.0431695 = score(doc=1319,freq=2.0), product of:
0.15939656 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045518078 = queryNorm
0.2708308 = fieldWeight in 1319, 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=1319)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 1. 8.1996 22:08:06
-
Lund, K.; Burgess, C.; Atchley, R.A.: Semantic and associative priming in high-dimensional semantic space (1995)
0.01
0.010792375 = product of:
0.02158475 = sum of:
0.02158475 = product of:
0.0431695 = sum of:
0.0431695 = weight(_text_:22 in 2151) [ClassicSimilarity], result of:
0.0431695 = score(doc=2151,freq=2.0), product of:
0.15939656 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045518078 = queryNorm
0.2708308 = fieldWeight in 2151, 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=2151)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Proceedings of the Seventeenth Annual Conference of the Cognitive Science Society: July 22 - 25, 1995, University of Pittsburgh / ed. by Johanna D. Moore and Jill Fain Lehmann
-
Järvelin, K.; Kristensen, J.; Niemi, T.; Sormunen, E.; Keskustalo, H.: ¬A deductive data model for query expansion (1996)
0.01
0.009250606 = product of:
0.018501213 = sum of:
0.018501213 = product of:
0.037002426 = sum of:
0.037002426 = weight(_text_:22 in 2230) [ClassicSimilarity], result of:
0.037002426 = score(doc=2230,freq=2.0), product of:
0.15939656 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045518078 = queryNorm
0.23214069 = fieldWeight in 2230, 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=2230)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Proceedings of the 19th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (ACM SIGIR '96), Zürich, Switzerland, August 18-22, 1996. Eds.: H.P. Frei et al
-
ALA / Subcommittee on Subject Relationships/Reference Structures: Final Report to the ALCTS/CCS Subject Analysis Committee (1997)
0.01
0.0078116907 = product of:
0.015623381 = sum of:
0.015623381 = product of:
0.031246763 = sum of:
0.031246763 = weight(_text_:b in 1800) [ClassicSimilarity], result of:
0.031246763 = score(doc=1800,freq=4.0), product of:
0.16126883 = queryWeight, product of:
3.542962 = idf(docFreq=3476, maxDocs=44218)
0.045518078 = queryNorm
0.19375575 = fieldWeight in 1800, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.542962 = idf(docFreq=3476, maxDocs=44218)
0.02734375 = fieldNorm(doc=1800)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Content
- Enthält: Appendix A: Subcommittee on Subject Relationships/Reference Structures - REPORT TO THE ALCTS/CCS SUBJECT ANALYSIS COMMITTEE - July 1996 Appendix B (part 1): Taxonomy of Subject Relationships. Compiled by Dee Michel with the assistance of Pat Kuhr - June 1996 draft (alphabetical display) (Separat in: http://web2.ala.org/ala/alctscontent/CCS/committees/subjectanalysis/subjectrelations/msrscu2.pdf) Appendix B (part 2): Taxonomy of Subject Relationships. Compiled by Dee Michel with the assistance of Pat Kuhr - June 1996 draft (hierarchical display) Appendix C: Checklist of Candidate Subject Relationships for Information Retrieval. Compiled by Dee Michel, Pat Kuhr, and Jane Greenberg; edited by Greg Wool - June 1997 Appendix D: Review of Reference Displays in Selected CD-ROM Abstracts and Indexes by Harriette Hemmasi and Steven Riel Appendix E: Analysis of Relationships in Six LC Subject Authority Records by Harriette Hemmasi and Gary Strawn Appendix F: Report of a Preliminary Survey of Subject Referencing in OPACs by Gregory Wool Appendix G: LC Subject Referencing in OPACs--Why Bother? by Gregory Wool Appendix H: Research Needs on Subject Relationships and Reference Structures in Information Access compiled by Jane Greenberg and Steven Riel with contributions from Dee Michel and others edited by Gregory Wool Appendix I: Bibliography on Subject Relationships compiled mostly by Dee Michel with additional contributions from Jane Greenberg, Steven Riel, and Gregory Wool
-
Efthimiadis, E.N.: User choices : a new yardstick for the evaluation of ranking algorithms for interactive query expansion (1995)
0.01
0.0077088396 = product of:
0.015417679 = sum of:
0.015417679 = product of:
0.030835358 = sum of:
0.030835358 = weight(_text_:22 in 5697) [ClassicSimilarity], result of:
0.030835358 = score(doc=5697,freq=2.0), product of:
0.15939656 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045518078 = 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)
0.5 = coord(1/2)
- Date
- 22. 2.1996 13:14:10
