-
Allan, J.; Callan, J.P.; Croft, W.B.; Ballesteros, L.; Broglio, J.; Xu, J.; Shu, H.: INQUERY at TREC-5 (1997)
0.07
0.070155784 = product of:
0.14031157 = sum of:
0.14031157 = sum of:
0.06951974 = weight(_text_:5 in 3103) [ClassicSimilarity], result of:
0.06951974 = score(doc=3103,freq=4.0), product of:
0.15247129 = queryWeight, product of:
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.052250203 = queryNorm
0.45595303 = fieldWeight in 3103, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.078125 = fieldNorm(doc=3103)
0.07079182 = weight(_text_:22 in 3103) [ClassicSimilarity], result of:
0.07079182 = score(doc=3103,freq=2.0), product of:
0.18297131 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052250203 = queryNorm
0.38690117 = fieldWeight in 3103, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=3103)
0.5 = coord(1/2)
- Date
- 27. 2.1999 20:55:22
- Source
- The Fifth Text Retrieval Conference (TREC-5). Ed.: E.M. Voorhees u. D.K. Harman
-
Ng, K.B.; Loewenstern, D.; Basu, C.; Hirsh, H.; Kantor, P.B.: Data fusion of machine-learning methods for the TREC5 routing tak (and other work) (1997)
0.06
0.05997485 = product of:
0.1199497 = sum of:
0.1199497 = sum of:
0.049157884 = weight(_text_:5 in 3107) [ClassicSimilarity], result of:
0.049157884 = score(doc=3107,freq=2.0), product of:
0.15247129 = queryWeight, product of:
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.052250203 = queryNorm
0.32240748 = fieldWeight in 3107, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.078125 = fieldNorm(doc=3107)
0.07079182 = weight(_text_:22 in 3107) [ClassicSimilarity], result of:
0.07079182 = score(doc=3107,freq=2.0), product of:
0.18297131 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052250203 = queryNorm
0.38690117 = fieldWeight in 3107, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=3107)
0.5 = coord(1/2)
- Date
- 27. 2.1999 20:59:22
- Source
- The Fifth Text Retrieval Conference (TREC-5). Ed.: E.M. Voorhees u. D.K. Harman
-
¬The Fifth Text Retrieval Conference (TREC-5) (1997)
0.05
0.047979876 = product of:
0.09595975 = sum of:
0.09595975 = sum of:
0.039326306 = weight(_text_:5 in 3087) [ClassicSimilarity], result of:
0.039326306 = score(doc=3087,freq=2.0), product of:
0.15247129 = queryWeight, product of:
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.052250203 = queryNorm
0.257926 = fieldWeight in 3087, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.0625 = fieldNorm(doc=3087)
0.05663345 = weight(_text_:22 in 3087) [ClassicSimilarity], result of:
0.05663345 = score(doc=3087,freq=2.0), product of:
0.18297131 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052250203 = queryNorm
0.30952093 = fieldWeight in 3087, 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=3087)
0.5 = coord(1/2)
- Abstract
- Proceedings of the 5th TREC-confrerence held in Gaithersburgh, Maryland, Nov 20-22, 1996. Aim of the conference was discussion on retrieval techniques for large test collections. Different research groups used different techniques, such as automated thesauri, term weighting, natural language techniques, relevance feedback and advanced pattern matching, for information retrieval from the same large database. This procedure makes it possible to compare the results. The proceedings include papers, tables of the system results, and brief system descriptions including timing and storage information
-
Blair, D.C.: STAIRS Redux : thoughts on the STAIRS evaluation, ten years after (1996)
0.04
0.041982394 = product of:
0.08396479 = sum of:
0.08396479 = sum of:
0.034410518 = weight(_text_:5 in 3002) [ClassicSimilarity], result of:
0.034410518 = score(doc=3002,freq=2.0), product of:
0.15247129 = queryWeight, product of:
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.052250203 = queryNorm
0.22568524 = fieldWeight in 3002, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.0546875 = fieldNorm(doc=3002)
0.04955427 = weight(_text_:22 in 3002) [ClassicSimilarity], result of:
0.04955427 = score(doc=3002,freq=2.0), product of:
0.18297131 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052250203 = queryNorm
0.2708308 = fieldWeight in 3002, 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=3002)
0.5 = coord(1/2)
- Abstract
- The test of retrieval effectiveness performed on IBM's STAIRS and reported in 'Communications of the ACM' 10 years ago, continues to be cited frequently in the information retrieval literature. The reasons for the study's continuing pertinence to today's research are discussed, and the political, legal, and commercial aspects of the study are presented. In addition, the method of calculating recall that was used in the STAIRS study is discussed in some detail, especially how it reduces the 5 major types of uncertainty in recall estimations. It is also suggested that this method of recall estimation may serve as the basis for recall estimations that might be truly comparable between systems
- Source
- Journal of the American Society for Information Science. 47(1996) no.1, S.4-22
-
Larsen, B.; Ingwersen, P.; Lund, B.: Data fusion according to the principle of polyrepresentation (2009)
0.03
0.028062312 = product of:
0.056124624 = sum of:
0.056124624 = sum of:
0.027807899 = weight(_text_:5 in 2752) [ClassicSimilarity], result of:
0.027807899 = score(doc=2752,freq=4.0), product of:
0.15247129 = queryWeight, product of:
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.052250203 = queryNorm
0.18238121 = fieldWeight in 2752, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.03125 = fieldNorm(doc=2752)
0.028316725 = weight(_text_:22 in 2752) [ClassicSimilarity], result of:
0.028316725 = score(doc=2752,freq=2.0), product of:
0.18297131 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052250203 = queryNorm
0.15476047 = fieldWeight in 2752, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03125 = fieldNorm(doc=2752)
0.5 = coord(1/2)
- Abstract
- We report data fusion experiments carried out on the four best-performing retrieval models from TREC 5. Three were conceptually/algorithmically very different from one another; one was algorithmically similar to one of the former. The objective of the test was to observe the performance of the 11 logical data fusion combinations compared to the performance of the four individual models and their intermediate fusions when following the principle of polyrepresentation. This principle is based on cognitive IR perspective (Ingwersen & Järvelin, 2005) and implies that each retrieval model is regarded as a representation of a unique interpretation of information retrieval (IR). It predicts that only fusions of very different, but equally good, IR models may outperform each constituent as well as their intermediate fusions. Two kinds of experiments were carried out. One tested restricted fusions, which entails that only the inner disjoint overlap documents between fused models are ranked. The second set of experiments was based on traditional data fusion methods. The experiments involved the 30 TREC 5 topics that contain more than 44 relevant documents. In all tests, the Borda and CombSUM scoring methods were used. Performance was measured by precision and recall, with document cutoff values (DCVs) at 100 and 15 documents, respectively. Results show that restricted fusions made of two, three, or four cognitively/algorithmically very different retrieval models perform significantly better than do the individual models at DCV100. At DCV15, however, the results of polyrepresentative fusion were less predictable. The traditional fusion method based on polyrepresentation principles demonstrates a clear picture of performance at both DCV levels and verifies the polyrepresentation predictions for data fusion in IR. Data fusion improves retrieval performance over their constituent IR models only if the models all are quite conceptually/algorithmically dissimilar and equally and well performing, in that order of importance.
- Date
- 22. 3.2009 18:48:28
-
Hawking, D.; Thistlewaite, P.; Bailey, P.: ANU/ACSys TREC-5 experiments : TREC-5 report (1997)
0.03
0.025543189 = product of:
0.051086377 = sum of:
0.051086377 = product of:
0.102172755 = sum of:
0.102172755 = weight(_text_:5 in 3101) [ClassicSimilarity], result of:
0.102172755 = score(doc=3101,freq=6.0), product of:
0.15247129 = queryWeight, product of:
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.052250203 = queryNorm
0.6701114 = fieldWeight in 3101, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.09375 = fieldNorm(doc=3101)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- The Fifth Text Retrieval Conference (TREC-5). Ed.: E.M. Voorhees u. D.K. Harman
-
Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984)
0.02
0.024777135 = product of:
0.04955427 = sum of:
0.04955427 = product of:
0.09910854 = sum of:
0.09910854 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
0.09910854 = score(doc=262,freq=2.0), product of:
0.18297131 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052250203 = queryNorm
0.5416616 = fieldWeight in 262, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.109375 = fieldNorm(doc=262)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 20.10.2000 12:22:23
-
Tomaiuolo, N.G.; Parker, J.: Maximizing relevant retrieval : keyword and natural language searching (1998)
0.02
0.024777135 = product of:
0.04955427 = sum of:
0.04955427 = product of:
0.09910854 = sum of:
0.09910854 = weight(_text_:22 in 6418) [ClassicSimilarity], result of:
0.09910854 = score(doc=6418,freq=2.0), product of:
0.18297131 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052250203 = queryNorm
0.5416616 = fieldWeight in 6418, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.109375 = fieldNorm(doc=6418)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Online. 22(1998) no.6, S.57-58
-
Voorhees, E.M.; Harman, D.: Overview of the Sixth Text REtrieval Conference (TREC-6) (2000)
0.02
0.024777135 = product of:
0.04955427 = sum of:
0.04955427 = product of:
0.09910854 = sum of:
0.09910854 = weight(_text_:22 in 6438) [ClassicSimilarity], result of:
0.09910854 = score(doc=6438,freq=2.0), product of:
0.18297131 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052250203 = queryNorm
0.5416616 = fieldWeight in 6438, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.109375 = fieldNorm(doc=6438)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 11. 8.2001 16:22:19
-
Dalrymple, P.W.: Retrieval by reformulation in two library catalogs : toward a cognitive model of searching behavior (1990)
0.02
0.024777135 = product of:
0.04955427 = sum of:
0.04955427 = product of:
0.09910854 = sum of:
0.09910854 = weight(_text_:22 in 5089) [ClassicSimilarity], result of:
0.09910854 = score(doc=5089,freq=2.0), product of:
0.18297131 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052250203 = queryNorm
0.5416616 = fieldWeight in 5089, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.109375 = fieldNorm(doc=5089)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 7.2006 18:43:54
-
Gauch, S.; Wang, J.: Corpus analysis for TREC 5 query expansion (1997)
0.02
0.020855924 = product of:
0.04171185 = sum of:
0.04171185 = product of:
0.0834237 = sum of:
0.0834237 = weight(_text_:5 in 5800) [ClassicSimilarity], result of:
0.0834237 = score(doc=5800,freq=4.0), product of:
0.15247129 = queryWeight, product of:
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.052250203 = queryNorm
0.54714364 = fieldWeight in 5800, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.09375 = fieldNorm(doc=5800)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- The Fifth Text Retrieval Conference (TREC-5). Ed.: E.M. Voorhees u. D.K. Harman
-
Kelledy, L.; Smeaton, A.F.: TREC-5 experiments at Dublin City University : Query space reduction, Spanish & character shape encoding (1997)
0.02
0.020855924 = product of:
0.04171185 = sum of:
0.04171185 = product of:
0.0834237 = sum of:
0.0834237 = weight(_text_:5 in 3089) [ClassicSimilarity], result of:
0.0834237 = score(doc=3089,freq=4.0), product of:
0.15247129 = queryWeight, product of:
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.052250203 = queryNorm
0.54714364 = fieldWeight in 3089, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.09375 = fieldNorm(doc=3089)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- The Fifth Text Retrieval Conference (TREC-5). Ed.: E.M. Voorhees u. D.K. Harman
-
Singhal, A.; Buckley, C.; Mitra, M.: Using query zoning and correlation with SMART : TREC 5 (1997)
0.02
0.020855924 = product of:
0.04171185 = sum of:
0.04171185 = product of:
0.0834237 = sum of:
0.0834237 = weight(_text_:5 in 3090) [ClassicSimilarity], result of:
0.0834237 = score(doc=3090,freq=4.0), product of:
0.15247129 = queryWeight, product of:
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.052250203 = queryNorm
0.54714364 = fieldWeight in 3090, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.09375 = fieldNorm(doc=3090)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- The Fifth Text Retrieval Conference (TREC-5). Ed.: E.M. Voorhees u. D.K. Harman
-
Burnett, M.; Jones, R.; Pape, L.: InTEXT automatic query enhancements in TREC-5 (1997)
0.02
0.020855924 = product of:
0.04171185 = sum of:
0.04171185 = product of:
0.0834237 = sum of:
0.0834237 = weight(_text_:5 in 3091) [ClassicSimilarity], result of:
0.0834237 = score(doc=3091,freq=4.0), product of:
0.15247129 = queryWeight, product of:
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.052250203 = queryNorm
0.54714364 = fieldWeight in 3091, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.09375 = fieldNorm(doc=3091)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- The Fifth Text Retrieval Conference (TREC-5). Ed.: E.M. Voorhees u. D.K. Harman
-
Lai, K.F.; Ngo, C.-W.: Experiments on routing, filtering and Chinese text retrieval in TREC-5 (1997)
0.02
0.020855924 = product of:
0.04171185 = sum of:
0.04171185 = product of:
0.0834237 = sum of:
0.0834237 = weight(_text_:5 in 3092) [ClassicSimilarity], result of:
0.0834237 = score(doc=3092,freq=4.0), product of:
0.15247129 = queryWeight, product of:
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.052250203 = queryNorm
0.54714364 = fieldWeight in 3092, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.09375 = fieldNorm(doc=3092)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- The Fifth Text Retrieval Conference (TREC-5). Ed.: E.M. Voorhees u. D.K. Harman
-
Ravin, Y.: ¬The GURU system in TREC-5 (1997)
0.02
0.020855924 = product of:
0.04171185 = sum of:
0.04171185 = product of:
0.0834237 = sum of:
0.0834237 = weight(_text_:5 in 3094) [ClassicSimilarity], result of:
0.0834237 = score(doc=3094,freq=4.0), product of:
0.15247129 = queryWeight, product of:
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.052250203 = queryNorm
0.54714364 = fieldWeight in 3094, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.09375 = fieldNorm(doc=3094)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- The Fifth Text Retrieval Conference (TREC-5). Ed.: E.M. Voorhees u. D.K. Harman
-
Lewis, D.D.: ¬The TREC-5 filtering track (1997)
0.02
0.020855924 = product of:
0.04171185 = sum of:
0.04171185 = product of:
0.0834237 = sum of:
0.0834237 = weight(_text_:5 in 3095) [ClassicSimilarity], result of:
0.0834237 = score(doc=3095,freq=4.0), product of:
0.15247129 = queryWeight, product of:
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.052250203 = queryNorm
0.54714364 = fieldWeight in 3095, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.09375 = fieldNorm(doc=3095)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- The Fifth Text Retrieval Conference (TREC-5). Ed.: E.M. Voorhees u. D.K. Harman
-
Beaulieu, M.M.; Gatford, M.; Huang, X.; Robertson, S.E.; Walker, S.; Williams, P.: Okapi an TREC-5 (1997)
0.02
0.020855924 = product of:
0.04171185 = sum of:
0.04171185 = product of:
0.0834237 = sum of:
0.0834237 = weight(_text_:5 in 3097) [ClassicSimilarity], result of:
0.0834237 = score(doc=3097,freq=4.0), product of:
0.15247129 = queryWeight, product of:
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.052250203 = queryNorm
0.54714364 = fieldWeight in 3097, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.09375 = fieldNorm(doc=3097)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- The Fifth Text Retrieval Conference (TREC-5). Ed.: E.M. Voorhees u. D.K. Harman
-
Strzalkowski, T.; Sparck Jones, K.: NLP track at TREC-5 (1997)
0.02
0.020855924 = product of:
0.04171185 = sum of:
0.04171185 = product of:
0.0834237 = sum of:
0.0834237 = weight(_text_:5 in 3098) [ClassicSimilarity], result of:
0.0834237 = score(doc=3098,freq=4.0), product of:
0.15247129 = queryWeight, product of:
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.052250203 = queryNorm
0.54714364 = fieldWeight in 3098, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.09375 = fieldNorm(doc=3098)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- The Fifth Text Retrieval Conference (TREC-5). Ed.: E.M. Voorhees u. D.K. Harman
-
Clarke, C.L.A.; Cormack, G.V.: Interactive substring retrieval : multitext experiments for TREC-5 (1997)
0.02
0.020855924 = product of:
0.04171185 = sum of:
0.04171185 = product of:
0.0834237 = sum of:
0.0834237 = weight(_text_:5 in 3099) [ClassicSimilarity], result of:
0.0834237 = score(doc=3099,freq=4.0), product of:
0.15247129 = queryWeight, product of:
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.052250203 = queryNorm
0.54714364 = fieldWeight in 3099, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.9180994 = idf(docFreq=6494, maxDocs=44218)
0.09375 = fieldNorm(doc=3099)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- The Fifth Text Retrieval Conference (TREC-5). Ed.: E.M. Voorhees u. D.K. Harman
