-
Joss, M.W.; Wszola, S.: ¬The engines that can : text search and retrieval software, their strategies, and vendors (1996)
0.03
0.026303962 = product of:
0.13151981 = sum of:
0.04202097 = weight(_text_:software in 5123) [ClassicSimilarity], result of:
0.04202097 = score(doc=5123,freq=8.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.525975 = fieldWeight in 5123, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.046875 = fieldNorm(doc=5123)
0.04202097 = weight(_text_:software in 5123) [ClassicSimilarity], result of:
0.04202097 = score(doc=5123,freq=8.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.525975 = fieldWeight in 5123, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.046875 = fieldNorm(doc=5123)
0.04202097 = weight(_text_:software in 5123) [ClassicSimilarity], result of:
0.04202097 = score(doc=5123,freq=8.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.525975 = fieldWeight in 5123, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.046875 = fieldNorm(doc=5123)
0.005456915 = product of:
0.016370745 = sum of:
0.016370745 = weight(_text_:22 in 5123) [ClassicSimilarity], result of:
0.016370745 = score(doc=5123,freq=2.0), product of:
0.07052079 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.02013827 = queryNorm
0.23214069 = fieldWeight in 5123, 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=5123)
0.33333334 = coord(1/3)
0.2 = coord(4/20)
- Abstract
- Traces the development of text searching and retrieval software designed to cope with the increasing demands made by the storage and handling of large amounts of data, recorded on high data storage media, from CD-ROM to multi gigabyte storage media and online information services, with particular reference to the need to cope with graphics as well as conventional ASCII text. Includes details of: Boolean searching, fuzzy searching and matching; relevance ranking; proximity searching and improved strategies for dealing with text searching in very large databases. Concludes that the best searching tools for CD-ROM publishers are those optimized for searching and retrieval on CD-ROM. CD-ROM drives have relatively lower random seek times than hard discs and so the software most appropriate to the medium is that which can effectively arrange the indexes and text on the CD-ROM to avoid continuous random access searching. Lists and reviews a selection of software packages designed to achieve the sort of results required for rapid CD-ROM searching
- Date
- 12. 9.1996 13:56:22
-
Wu, H.; Salton, G.: ¬The estimation of term relevance weights using relevance feedback (1981)
0.02
0.020578332 = product of:
0.13718888 = sum of:
0.045729626 = weight(_text_:23 in 4728) [ClassicSimilarity], result of:
0.045729626 = score(doc=4728,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.63357824 = fieldWeight in 4728, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.125 = fieldNorm(doc=4728)
0.045729626 = weight(_text_:23 in 4728) [ClassicSimilarity], result of:
0.045729626 = score(doc=4728,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.63357824 = fieldWeight in 4728, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.125 = fieldNorm(doc=4728)
0.045729626 = weight(_text_:23 in 4728) [ClassicSimilarity], result of:
0.045729626 = score(doc=4728,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.63357824 = fieldWeight in 4728, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.125 = fieldNorm(doc=4728)
0.15 = coord(3/20)
- Date
- 8.10.2000 14:23:35
-
Jones, K.: Linguistic searching versus relevance ranking : DR-LINK and TARGET (1999)
0.02
0.018006042 = product of:
0.12004027 = sum of:
0.04001342 = weight(_text_:23 in 6423) [ClassicSimilarity], result of:
0.04001342 = score(doc=6423,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.55438095 = fieldWeight in 6423, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.109375 = fieldNorm(doc=6423)
0.04001342 = weight(_text_:23 in 6423) [ClassicSimilarity], result of:
0.04001342 = score(doc=6423,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.55438095 = fieldWeight in 6423, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.109375 = fieldNorm(doc=6423)
0.04001342 = weight(_text_:23 in 6423) [ClassicSimilarity], result of:
0.04001342 = score(doc=6423,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.55438095 = fieldWeight in 6423, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.109375 = fieldNorm(doc=6423)
0.15 = coord(3/20)
- Source
- Online and CD-ROM review. 23(1999) no.2, S.67-80
-
Losada, D.E.; Barreiro, A.: Emebedding term similarity and inverse document frequency into a logical model of information retrieval (2003)
0.02
0.015174066 = product of:
0.07587033 = sum of:
0.022864813 = weight(_text_:23 in 1422) [ClassicSimilarity], result of:
0.022864813 = score(doc=1422,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.31678912 = fieldWeight in 1422, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.0625 = fieldNorm(doc=1422)
0.022864813 = weight(_text_:23 in 1422) [ClassicSimilarity], result of:
0.022864813 = score(doc=1422,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.31678912 = fieldWeight in 1422, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.0625 = fieldNorm(doc=1422)
0.022864813 = weight(_text_:23 in 1422) [ClassicSimilarity], result of:
0.022864813 = score(doc=1422,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.31678912 = fieldWeight in 1422, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.0625 = fieldNorm(doc=1422)
0.007275887 = product of:
0.02182766 = sum of:
0.02182766 = weight(_text_:22 in 1422) [ClassicSimilarity], result of:
0.02182766 = score(doc=1422,freq=2.0), product of:
0.07052079 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.02013827 = queryNorm
0.30952093 = fieldWeight in 1422, 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=1422)
0.33333334 = coord(1/3)
0.2 = coord(4/20)
- Date
- 22. 3.2003 19:27:23
-
Courtois, M.P.; Berry, M.W.: Results ranking in Web search engines (1999)
0.01
0.012861458 = product of:
0.08574305 = sum of:
0.028581016 = weight(_text_:23 in 3726) [ClassicSimilarity], result of:
0.028581016 = score(doc=3726,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.3959864 = fieldWeight in 3726, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.078125 = fieldNorm(doc=3726)
0.028581016 = weight(_text_:23 in 3726) [ClassicSimilarity], result of:
0.028581016 = score(doc=3726,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.3959864 = fieldWeight in 3726, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.078125 = fieldNorm(doc=3726)
0.028581016 = weight(_text_:23 in 3726) [ClassicSimilarity], result of:
0.028581016 = score(doc=3726,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.3959864 = fieldWeight in 3726, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.078125 = fieldNorm(doc=3726)
0.15 = coord(3/20)
- Source
- Online. 23(1999) no.3, S.39-46
-
Ruthven, I.; Lalmas, M.: Selective relevance feedback using term characteristics (1999)
0.01
0.012861458 = product of:
0.08574305 = sum of:
0.028581016 = weight(_text_:23 in 3824) [ClassicSimilarity], result of:
0.028581016 = score(doc=3824,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.3959864 = fieldWeight in 3824, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.078125 = fieldNorm(doc=3824)
0.028581016 = weight(_text_:23 in 3824) [ClassicSimilarity], result of:
0.028581016 = score(doc=3824,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.3959864 = fieldWeight in 3824, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.078125 = fieldNorm(doc=3824)
0.028581016 = weight(_text_:23 in 3824) [ClassicSimilarity], result of:
0.028581016 = score(doc=3824,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.3959864 = fieldWeight in 3824, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.078125 = fieldNorm(doc=3824)
0.15 = coord(3/20)
- Source
- Vocabulary as a central concept in digital libraries: interdisciplinary concepts, challenges, and opportunities : proceedings of the Third International Conference an Conceptions of Library and Information Science (COLIS3), Dubrovnik, Croatia, 23-26 May 1999. Ed. by T. Arpanac et al
-
Chang, R.: ¬The development of indexing technology (1993)
0.01
0.012606291 = product of:
0.08404194 = sum of:
0.028013978 = weight(_text_:software in 7024) [ClassicSimilarity], result of:
0.028013978 = score(doc=7024,freq=2.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.35064998 = fieldWeight in 7024, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.0625 = fieldNorm(doc=7024)
0.028013978 = weight(_text_:software in 7024) [ClassicSimilarity], result of:
0.028013978 = score(doc=7024,freq=2.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.35064998 = fieldWeight in 7024, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.0625 = fieldNorm(doc=7024)
0.028013978 = weight(_text_:software in 7024) [ClassicSimilarity], result of:
0.028013978 = score(doc=7024,freq=2.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.35064998 = fieldWeight in 7024, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.0625 = fieldNorm(doc=7024)
0.15 = coord(3/20)
- Source
- Library software review. 12(1993) no.3, S.30-35
-
Van der Veer Martens, B.; Fleet, C. van: Opening the black box of "relevance work" : a domain analysis (2012)
0.01
0.011621411 = product of:
0.058107052 = sum of:
0.017148608 = weight(_text_:23 in 247) [ClassicSimilarity], result of:
0.017148608 = score(doc=247,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.23759183 = fieldWeight in 247, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.046875 = fieldNorm(doc=247)
0.017148608 = weight(_text_:23 in 247) [ClassicSimilarity], result of:
0.017148608 = score(doc=247,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.23759183 = fieldWeight in 247, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.046875 = fieldNorm(doc=247)
0.017148608 = weight(_text_:23 in 247) [ClassicSimilarity], result of:
0.017148608 = score(doc=247,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.23759183 = fieldWeight in 247, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.046875 = fieldNorm(doc=247)
0.006661224 = weight(_text_:der in 247) [ClassicSimilarity], result of:
0.006661224 = score(doc=247,freq=2.0), product of:
0.044984195 = queryWeight, product of:
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.02013827 = queryNorm
0.14807922 = fieldWeight in 247, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.046875 = fieldNorm(doc=247)
0.2 = coord(4/20)
- Date
- 11. 6.2012 14:23:00
-
Shiri, A.A.; Revie, C.: Query expansion behavior within a thesaurus-enhanced search environment : a user-centered evaluation (2006)
0.01
0.011414727 = product of:
0.057073634 = sum of:
0.017508736 = weight(_text_:software in 56) [ClassicSimilarity], result of:
0.017508736 = score(doc=56,freq=2.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.21915624 = fieldWeight in 56, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.0390625 = fieldNorm(doc=56)
0.017508736 = weight(_text_:software in 56) [ClassicSimilarity], result of:
0.017508736 = score(doc=56,freq=2.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.21915624 = fieldWeight in 56, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.0390625 = fieldNorm(doc=56)
0.017508736 = weight(_text_:software in 56) [ClassicSimilarity], result of:
0.017508736 = score(doc=56,freq=2.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.21915624 = fieldWeight in 56, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.0390625 = fieldNorm(doc=56)
0.0045474293 = product of:
0.013642288 = sum of:
0.013642288 = weight(_text_:22 in 56) [ClassicSimilarity], result of:
0.013642288 = score(doc=56,freq=2.0), product of:
0.07052079 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.02013827 = queryNorm
0.19345059 = fieldWeight in 56, 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=56)
0.33333334 = coord(1/3)
0.2 = coord(4/20)
- Abstract
- The study reported here investigated the query expansion behavior of end-users interacting with a thesaurus-enhanced search system on the Web. Two groups, namely academic staff and postgraduate students, were recruited into this study. Data were collected from 90 searches performed by 30 users using the OVID interface to the CAB abstracts database. Data-gathering techniques included questionnaires, screen capturing software, and interviews. The results presented here relate to issues of search-topic and search-term characteristics, number and types of expanded queries, usefulness of thesaurus terms, and behavioral differences between academic staff and postgraduate students in their interaction. The key conclusions drawn were that (a) academic staff chose more narrow and synonymous terms than did postgraduate students, who generally selected broader and related terms; (b) topic complexity affected users' interaction with the thesaurus in that complex topics required more query expansion and search term selection; (c) users' prior topic-search experience appeared to have a significant effect on their selection and evaluation of thesaurus terms; (d) in 50% of the searches where additional terms were suggested from the thesaurus, users stated that they had not been aware of the terms at the beginning of the search; this observation was particularly noticeable in the case of postgraduate students.
- Date
- 22. 7.2006 16:32:43
-
Kelledy, F.; Smeaton, A.F.: Signature files and beyond (1996)
0.01
0.011380549 = product of:
0.056902744 = sum of:
0.017148608 = weight(_text_:23 in 6973) [ClassicSimilarity], result of:
0.017148608 = score(doc=6973,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.23759183 = fieldWeight in 6973, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.046875 = fieldNorm(doc=6973)
0.017148608 = weight(_text_:23 in 6973) [ClassicSimilarity], result of:
0.017148608 = score(doc=6973,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.23759183 = fieldWeight in 6973, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.046875 = fieldNorm(doc=6973)
0.017148608 = weight(_text_:23 in 6973) [ClassicSimilarity], result of:
0.017148608 = score(doc=6973,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.23759183 = fieldWeight in 6973, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.046875 = fieldNorm(doc=6973)
0.005456915 = product of:
0.016370745 = sum of:
0.016370745 = weight(_text_:22 in 6973) [ClassicSimilarity], result of:
0.016370745 = score(doc=6973,freq=2.0), product of:
0.07052079 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.02013827 = queryNorm
0.23214069 = fieldWeight in 6973, 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=6973)
0.33333334 = coord(1/3)
0.2 = coord(4/20)
- 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
-
Keen, M.: Query reformulation in ranked output interaction (1994)
0.01
0.011030504 = product of:
0.07353669 = sum of:
0.02451223 = weight(_text_:software in 1065) [ClassicSimilarity], result of:
0.02451223 = score(doc=1065,freq=2.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.30681872 = fieldWeight in 1065, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.0546875 = fieldNorm(doc=1065)
0.02451223 = weight(_text_:software in 1065) [ClassicSimilarity], result of:
0.02451223 = score(doc=1065,freq=2.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.30681872 = fieldWeight in 1065, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.0546875 = fieldNorm(doc=1065)
0.02451223 = weight(_text_:software in 1065) [ClassicSimilarity], result of:
0.02451223 = score(doc=1065,freq=2.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.30681872 = fieldWeight in 1065, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.0546875 = fieldNorm(doc=1065)
0.15 = coord(3/20)
- Abstract
- Reports on a research project to evaluate and compare Boolean searching and methods of query reformulation using ranked output retrieval. Illustrates the design and operating features of the ranked output system, called ROSE (Ranked Output Search Engine), by means of typical results obtained by searching a database of 1239 records on the subject of cystic fibrosis. Concludes that further work is needed to determine the best reformulation tactics needed to harness the professional searcher's intelligence with that much more limited intelligence provided by the search software
-
Wollf, J.G.: ¬A scalable technique for best-match retrieval of sequential information using metrics-guided search (1994)
0.01
0.011030504 = product of:
0.07353669 = sum of:
0.02451223 = weight(_text_:software in 5334) [ClassicSimilarity], result of:
0.02451223 = score(doc=5334,freq=2.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.30681872 = fieldWeight in 5334, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.0546875 = fieldNorm(doc=5334)
0.02451223 = weight(_text_:software in 5334) [ClassicSimilarity], result of:
0.02451223 = score(doc=5334,freq=2.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.30681872 = fieldWeight in 5334, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.0546875 = fieldNorm(doc=5334)
0.02451223 = weight(_text_:software in 5334) [ClassicSimilarity], result of:
0.02451223 = score(doc=5334,freq=2.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.30681872 = fieldWeight in 5334, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.0546875 = fieldNorm(doc=5334)
0.15 = coord(3/20)
- Abstract
- Describes a new technique for retrieving information by finding the best match or matches between a textual query and a textual database. The technique uses principles of beam search with a measure of probability to guide the search and prune the search tree. Unlike many methods for comparing strings, the method gives a set of alternative matches, graded by the quality of the matching. The new technique is embodies in a software simulation SP21 which runs on a conventional computer. Presnts examples showing best-match retrieval of information from a textual database. Presents analytic and emprirical evidence on the performance of the technique. It lends itself well to parallel processing. Discusses planned developments
-
Berry, M.W.; Browne, M.: Understanding search engines : mathematical modeling and text retrieval (2005)
0.01
0.010917367 = product of:
0.07278245 = sum of:
0.024260817 = weight(_text_:software in 7) [ClassicSimilarity], result of:
0.024260817 = score(doc=7,freq=6.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.3036718 = fieldWeight in 7, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.03125 = fieldNorm(doc=7)
0.024260817 = weight(_text_:software in 7) [ClassicSimilarity], result of:
0.024260817 = score(doc=7,freq=6.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.3036718 = fieldWeight in 7, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.03125 = fieldNorm(doc=7)
0.024260817 = weight(_text_:software in 7) [ClassicSimilarity], result of:
0.024260817 = score(doc=7,freq=6.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.3036718 = fieldWeight in 7, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.03125 = fieldNorm(doc=7)
0.15 = coord(3/20)
- Abstract
- The second edition of Understanding Search Engines: Mathematical Modeling and Text Retrieval follows the basic premise of the first edition by discussing many of the key design issues for building search engines and emphasizing the important role that applied mathematics can play in improving information retrieval. The authors discuss important data structures, algorithms, and software as well as user-centered issues such as interfaces, manual indexing, and document preparation. Significant changes bring the text up to date on current information retrieval methods: for example the addition of a new chapter on link-structure algorithms used in search engines such as Google. The chapter on user interface has been rewritten to specifically focus on search engine usability. In addition the authors have added new recommendations for further reading and expanded the bibliography, and have updated and streamlined the index to make it more reader friendly.
- Content
- Inhalt: Introduction Document File Preparation - Manual Indexing - Information Extraction - Vector Space Modeling - Matrix Decompositions - Query Representations - Ranking and Relevance Feedback - Searching by Link Structure - User Interface - Book Format Document File Preparation Document Purification and Analysis - Text Formatting - Validation - Manual Indexing - Automatic Indexing - Item Normalization - Inverted File Structures - Document File - Dictionary List - Inversion List - Other File Structures Vector Space Models Construction - Term-by-Document Matrices - Simple Query Matching - Design Issues - Term Weighting - Sparse Matrix Storage - Low-Rank Approximations Matrix Decompositions QR Factorization - Singular Value Decomposition - Low-Rank Approximations - Query Matching - Software - Semidiscrete Decomposition - Updating Techniques Query Management Query Binding - Types of Queries - Boolean Queries - Natural Language Queries - Thesaurus Queries - Fuzzy Queries - Term Searches - Probabilistic Queries Ranking and Relevance Feedback Performance Evaluation - Precision - Recall - Average Precision - Genetic Algorithms - Relevance Feedback Searching by Link Structure HITS Method - HITS Implementation - HITS Summary - PageRank Method - PageRank Adjustments - PageRank Implementation - PageRank Summary User Interface Considerations General Guidelines - Search Engine Interfaces - Form Fill-in - Display Considerations - Progress Indication - No Penalties for Error - Results - Test and Retest - Final Considerations Further Reading
- Series
- Software, environments, tools; 17
-
Evans, R.: Beyond Boolean : relevance ranking, natural language and the new search paradigm (1994)
0.01
0.009454718 = product of:
0.06303145 = sum of:
0.021010485 = weight(_text_:software in 8578) [ClassicSimilarity], result of:
0.021010485 = score(doc=8578,freq=2.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.2629875 = fieldWeight in 8578, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.046875 = fieldNorm(doc=8578)
0.021010485 = weight(_text_:software in 8578) [ClassicSimilarity], result of:
0.021010485 = score(doc=8578,freq=2.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.2629875 = fieldWeight in 8578, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.046875 = fieldNorm(doc=8578)
0.021010485 = weight(_text_:software in 8578) [ClassicSimilarity], result of:
0.021010485 = score(doc=8578,freq=2.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.2629875 = fieldWeight in 8578, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.046875 = fieldNorm(doc=8578)
0.15 = coord(3/20)
- Abstract
- New full-text search engines that employ relevance ranking have become available online services. These software tools provide increased ease of use by making natural language queries possible, and deliver superior recall. Even inexperienced end users can execute searchers with good results. For experienced database searchers, the ranked search engines offer a technology that is complementary to structured Boolean strategy, not necessarily a replacement. Even traditional Boolean queries become useful when the results are ranked by probable relevance, such ranking can free users from overwhelming output. Relevance ranking also permits the use of statistical inference methods to find related terms. using such tools to their best advantage requires rethinking some basic techniques, such as progressively narrowing queries until the retrieved set is small enough. users should broaden their search to maximize recall, then browse retrieved documents or pare the set down from the top
-
Computational information retrieval (2001)
0.01
0.009454718 = product of:
0.06303145 = sum of:
0.021010485 = weight(_text_:software in 4167) [ClassicSimilarity], result of:
0.021010485 = score(doc=4167,freq=2.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.2629875 = fieldWeight in 4167, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.046875 = fieldNorm(doc=4167)
0.021010485 = weight(_text_:software in 4167) [ClassicSimilarity], result of:
0.021010485 = score(doc=4167,freq=2.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.2629875 = fieldWeight in 4167, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.046875 = fieldNorm(doc=4167)
0.021010485 = weight(_text_:software in 4167) [ClassicSimilarity], result of:
0.021010485 = score(doc=4167,freq=2.0), product of:
0.07989157 = queryWeight, product of:
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.02013827 = queryNorm
0.2629875 = fieldWeight in 4167, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9671519 = idf(docFreq=2274, maxDocs=44218)
0.046875 = fieldNorm(doc=4167)
0.15 = coord(3/20)
- Abstract
- This volume contains selected papers that focus on the use of linear algebra, computational statistics, and computer science in the development of algorithms and software systems for text retrieval. Experts in information modeling and retrieval share their perspectives on the design of scalable but precise text retrieval systems, revealing many of the challenges and obstacles that mathematical and statistical models must overcome to be viable for automated text processing. This very useful proceedings is an excellent companion for courses in information retrieval, applied linear algebra, and applied statistics. Computational Information Retrieval provides background material on vector space models for text retrieval that applied mathematicians, statisticians, and computer scientists may not be familiar with. For graduate students in these areas, several research questions in information modeling are exposed. In addition, several case studies concerning the efficacy of the popular Latent Semantic Analysis (or Indexing) approach are provided.
-
Henzinger, M.R.: Link analysis in Web information retrieval (2000)
0.01
0.009428329 = product of:
0.04714164 = sum of:
0.0114324065 = weight(_text_:23 in 801) [ClassicSimilarity], result of:
0.0114324065 = score(doc=801,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.15839456 = fieldWeight in 801, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.03125 = fieldNorm(doc=801)
0.0114324065 = weight(_text_:23 in 801) [ClassicSimilarity], result of:
0.0114324065 = score(doc=801,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.15839456 = fieldWeight in 801, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.03125 = fieldNorm(doc=801)
0.0114324065 = weight(_text_:23 in 801) [ClassicSimilarity], result of:
0.0114324065 = score(doc=801,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.15839456 = fieldWeight in 801, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.03125 = fieldNorm(doc=801)
0.012844422 = product of:
0.025688844 = sum of:
0.025688844 = weight(_text_:engineering in 801) [ClassicSimilarity], result of:
0.025688844 = score(doc=801,freq=2.0), product of:
0.10819342 = queryWeight, product of:
5.372528 = idf(docFreq=557, maxDocs=44218)
0.02013827 = queryNorm
0.23743443 = fieldWeight in 801, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.372528 = idf(docFreq=557, maxDocs=44218)
0.03125 = fieldNorm(doc=801)
0.5 = coord(1/2)
0.2 = coord(4/20)
- Source
- IEEE data engineering bulletin. 23(2000) no.3, S.3-8
-
Schaefer, A.; Jordan, M.; Klas, C.-P.; Fuhr, N.: Active support for query formulation in virtual digital libraries : a case study with DAFFODIL (2005)
0.01
0.009094424 = product of:
0.06062949 = sum of:
0.02020983 = weight(_text_:23 in 4296) [ClassicSimilarity], result of:
0.02020983 = score(doc=4296,freq=4.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.28000468 = fieldWeight in 4296, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.0390625 = fieldNorm(doc=4296)
0.02020983 = weight(_text_:23 in 4296) [ClassicSimilarity], result of:
0.02020983 = score(doc=4296,freq=4.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.28000468 = fieldWeight in 4296, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.0390625 = fieldNorm(doc=4296)
0.02020983 = weight(_text_:23 in 4296) [ClassicSimilarity], result of:
0.02020983 = score(doc=4296,freq=4.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.28000468 = fieldWeight in 4296, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.0390625 = fieldNorm(doc=4296)
0.15 = coord(3/20)
- Date
- 16.11.2008 17:23:50
- Source
- Research and advanced technology for digital libraries : 9th European conference, ECDL 2005, Vienna, Austria, September 18-23, 2005 ; proceedings / Andreas Rauber ... (eds.)
-
Klein, S.T.: On the use of negation in Boolean IR queries. (2009)
0.01
0.009003021 = product of:
0.060020134 = sum of:
0.02000671 = weight(_text_:23 in 3927) [ClassicSimilarity], result of:
0.02000671 = score(doc=3927,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.27719048 = fieldWeight in 3927, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.0546875 = fieldNorm(doc=3927)
0.02000671 = weight(_text_:23 in 3927) [ClassicSimilarity], result of:
0.02000671 = score(doc=3927,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.27719048 = fieldWeight in 3927, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.0546875 = fieldNorm(doc=3927)
0.02000671 = weight(_text_:23 in 3927) [ClassicSimilarity], result of:
0.02000671 = score(doc=3927,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.27719048 = fieldWeight in 3927, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.0546875 = fieldNorm(doc=3927)
0.15 = coord(3/20)
- Date
- 23. 1.2011 13:59:51
-
Ning, X.; Jin, H.; Jia, W.; Yuan, P.: Practical and effective IR-style keyword search over semantic web (2009)
0.01
0.009003021 = product of:
0.060020134 = sum of:
0.02000671 = weight(_text_:23 in 4213) [ClassicSimilarity], result of:
0.02000671 = score(doc=4213,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.27719048 = fieldWeight in 4213, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.0546875 = fieldNorm(doc=4213)
0.02000671 = weight(_text_:23 in 4213) [ClassicSimilarity], result of:
0.02000671 = score(doc=4213,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.27719048 = fieldWeight in 4213, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.0546875 = fieldNorm(doc=4213)
0.02000671 = weight(_text_:23 in 4213) [ClassicSimilarity], result of:
0.02000671 = score(doc=4213,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.27719048 = fieldWeight in 4213, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.0546875 = fieldNorm(doc=4213)
0.15 = coord(3/20)
- Date
- 23. 1.2011 13:55:17
-
García Cumbreras, M.A.; Perea-Ortega, J.M.; García Vega, M.; Ureña López, L.A.: Information retrieval with geographical references : relevant documents filtering vs. query expansion (2009)
0.01
0.009003021 = product of:
0.060020134 = sum of:
0.02000671 = weight(_text_:23 in 4222) [ClassicSimilarity], result of:
0.02000671 = score(doc=4222,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.27719048 = fieldWeight in 4222, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.0546875 = fieldNorm(doc=4222)
0.02000671 = weight(_text_:23 in 4222) [ClassicSimilarity], result of:
0.02000671 = score(doc=4222,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.27719048 = fieldWeight in 4222, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.0546875 = fieldNorm(doc=4222)
0.02000671 = weight(_text_:23 in 4222) [ClassicSimilarity], result of:
0.02000671 = score(doc=4222,freq=2.0), product of:
0.07217676 = queryWeight, product of:
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.02013827 = queryNorm
0.27719048 = fieldWeight in 4222, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5840597 = idf(docFreq=3336, maxDocs=44218)
0.0546875 = fieldNorm(doc=4222)
0.15 = coord(3/20)
- Date
- 23. 1.2011 14:19:08
