-
Chang, C.-H.; Hsu, C.-C.: Integrating query expansion and conceptual relevance feedback for personalized Web information retrieval (1998)
0.02
0.021695316 = product of:
0.04339063 = sum of:
0.04339063 = product of:
0.06508595 = sum of:
0.02179201 = weight(_text_:h in 1319) [ClassicSimilarity], result of:
0.02179201 = score(doc=1319,freq=2.0), product of:
0.113413334 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045649286 = queryNorm
0.19214681 = fieldWeight in 1319, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0546875 = fieldNorm(doc=1319)
0.043293934 = weight(_text_:22 in 1319) [ClassicSimilarity], result of:
0.043293934 = score(doc=1319,freq=2.0), product of:
0.15985602 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045649286 = 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)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 1. 8.1996 22:08:06
-
White, H. D.: Co-cited author retrieval and relevance theory : examples from the humanities (2015)
0.02
0.019734526 = product of:
0.039469052 = sum of:
0.039469052 = product of:
0.059203576 = sum of:
0.03735773 = weight(_text_:h in 1687) [ClassicSimilarity], result of:
0.03735773 = score(doc=1687,freq=2.0), product of:
0.113413334 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045649286 = queryNorm
0.32939452 = fieldWeight in 1687, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.09375 = fieldNorm(doc=1687)
0.021845847 = weight(_text_:d in 1687) [ClassicSimilarity], result of:
0.021845847 = score(doc=1687,freq=2.0), product of:
0.0867278 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045649286 = queryNorm
0.2518898 = fieldWeight in 1687, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.09375 = fieldNorm(doc=1687)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
-
Fan, W.; Fox, E.A.; Pathak, P.; Wu, H.: ¬The effects of fitness functions an genetic programming-based ranking discovery for Web search (2004)
0.02
0.018595984 = product of:
0.03719197 = sum of:
0.03719197 = product of:
0.05578795 = sum of:
0.018678864 = weight(_text_:h in 2239) [ClassicSimilarity], result of:
0.018678864 = score(doc=2239,freq=2.0), product of:
0.113413334 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045649286 = queryNorm
0.16469726 = fieldWeight in 2239, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.046875 = fieldNorm(doc=2239)
0.03710909 = weight(_text_:22 in 2239) [ClassicSimilarity], result of:
0.03710909 = score(doc=2239,freq=2.0), product of:
0.15985602 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045649286 = queryNorm
0.23214069 = fieldWeight in 2239, 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=2239)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 31. 5.2004 19:22:06
-
Voorhees, E.M.: Implementing agglomerative hierarchic clustering algorithms for use in document retrieval (1986)
0.02
0.01649293 = product of:
0.03298586 = sum of:
0.03298586 = product of:
0.09895757 = sum of:
0.09895757 = weight(_text_:22 in 402) [ClassicSimilarity], result of:
0.09895757 = score(doc=402,freq=2.0), product of:
0.15985602 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045649286 = queryNorm
0.61904186 = fieldWeight in 402, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.125 = fieldNorm(doc=402)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Source
- Information processing and management. 22(1986) no.6, S.465-476
-
Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983)
0.01
0.014431312 = product of:
0.028862623 = sum of:
0.028862623 = product of:
0.08658787 = sum of:
0.08658787 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
0.08658787 = score(doc=2134,freq=2.0), product of:
0.15985602 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045649286 = queryNorm
0.5416616 = fieldWeight in 2134, 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=2134)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Date
- 30. 3.2001 13:32:22
-
Back, J.: ¬An evaluation of relevancy ranking techniques used by Internet search engines (2000)
0.01
0.014431312 = product of:
0.028862623 = sum of:
0.028862623 = product of:
0.08658787 = sum of:
0.08658787 = weight(_text_:22 in 3445) [ClassicSimilarity], result of:
0.08658787 = score(doc=3445,freq=2.0), product of:
0.15985602 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045649286 = queryNorm
0.5416616 = fieldWeight in 3445, 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=3445)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Date
- 25. 8.2005 17:42:22
-
Song, D.; Bruza, P.D.: Towards context sensitive information inference (2003)
0.01
0.013342226 = product of:
0.026684452 = sum of:
0.026684452 = product of:
0.040026676 = sum of:
0.009102437 = weight(_text_:d in 1428) [ClassicSimilarity], result of:
0.009102437 = score(doc=1428,freq=2.0), product of:
0.0867278 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045649286 = queryNorm
0.104954086 = fieldWeight in 1428, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.0390625 = fieldNorm(doc=1428)
0.03092424 = weight(_text_:22 in 1428) [ClassicSimilarity], result of:
0.03092424 = score(doc=1428,freq=2.0), product of:
0.15985602 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045649286 = queryNorm
0.19345059 = fieldWeight in 1428, 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=1428)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Date
- 22. 3.2003 19:35:46
-
Shiri, A.A.; Revie, C.: Query expansion behavior within a thesaurus-enhanced search environment : a user-centered evaluation (2006)
0.01
0.013342226 = product of:
0.026684452 = sum of:
0.026684452 = product of:
0.040026676 = sum of:
0.009102437 = weight(_text_:d in 56) [ClassicSimilarity], result of:
0.009102437 = score(doc=56,freq=2.0), product of:
0.0867278 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045649286 = queryNorm
0.104954086 = fieldWeight in 56, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.0390625 = fieldNorm(doc=56)
0.03092424 = weight(_text_:22 in 56) [ClassicSimilarity], result of:
0.03092424 = score(doc=56,freq=2.0), product of:
0.15985602 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045649286 = 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)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- 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
-
Radev, D.; Fan, W.; Qu, H.; Wu, H.; Grewal, A.: Probabilistic question answering on the Web (2005)
0.01
0.012446277 = product of:
0.024892554 = sum of:
0.024892554 = product of:
0.03733883 = sum of:
0.026415905 = weight(_text_:h in 3455) [ClassicSimilarity], result of:
0.026415905 = score(doc=3455,freq=4.0), product of:
0.113413334 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045649286 = queryNorm
0.2329171 = fieldWeight in 3455, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.046875 = fieldNorm(doc=3455)
0.010922924 = weight(_text_:d in 3455) [ClassicSimilarity], result of:
0.010922924 = score(doc=3455,freq=2.0), product of:
0.0867278 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045649286 = queryNorm
0.1259449 = fieldWeight in 3455, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.046875 = fieldNorm(doc=3455)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
-
Li, H.; Wu, H.; Li, D.; Lin, S.; Su, Z.; Luo, X.: PSI: A probabilistic semantic interpretable framework for fine-grained image ranking (2018)
0.01
0.012446277 = product of:
0.024892554 = sum of:
0.024892554 = product of:
0.03733883 = sum of:
0.026415905 = weight(_text_:h in 4577) [ClassicSimilarity], result of:
0.026415905 = score(doc=4577,freq=4.0), product of:
0.113413334 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045649286 = queryNorm
0.2329171 = fieldWeight in 4577, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.046875 = fieldNorm(doc=4577)
0.010922924 = weight(_text_:d in 4577) [ClassicSimilarity], result of:
0.010922924 = score(doc=4577,freq=2.0), product of:
0.0867278 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045649286 = queryNorm
0.1259449 = fieldWeight in 4577, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.046875 = fieldNorm(doc=4577)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
-
Wu, H.; Salton, G.: ¬The estimation of term relevance weights using relevance feedback (1981)
0.01
0.008301718 = product of:
0.016603436 = sum of:
0.016603436 = product of:
0.04981031 = sum of:
0.04981031 = weight(_text_:h in 4728) [ClassicSimilarity], result of:
0.04981031 = score(doc=4728,freq=2.0), product of:
0.113413334 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045649286 = queryNorm
0.4391927 = fieldWeight in 4728, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.125 = fieldNorm(doc=4728)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
-
MacFarlane, A.; Robertson, S.E.; McCann, J.A.: Parallel computing for passage retrieval (2004)
0.01
0.008246465 = product of:
0.01649293 = sum of:
0.01649293 = product of:
0.049478784 = sum of:
0.049478784 = weight(_text_:22 in 5108) [ClassicSimilarity], result of:
0.049478784 = score(doc=5108,freq=2.0), product of:
0.15985602 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045649286 = queryNorm
0.30952093 = fieldWeight in 5108, 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=5108)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Date
- 20. 1.2007 18:30:22
-
Faloutsos, C.: Signature files (1992)
0.01
0.008246465 = product of:
0.01649293 = sum of:
0.01649293 = product of:
0.049478784 = sum of:
0.049478784 = weight(_text_:22 in 3499) [ClassicSimilarity], result of:
0.049478784 = score(doc=3499,freq=2.0), product of:
0.15985602 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045649286 = queryNorm
0.30952093 = fieldWeight in 3499, 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=3499)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Date
- 7. 5.1999 15:22:48
-
Losada, D.E.; Barreiro, A.: Emebedding term similarity and inverse document frequency into a logical model of information retrieval (2003)
0.01
0.008246465 = product of:
0.01649293 = sum of:
0.01649293 = product of:
0.049478784 = sum of:
0.049478784 = weight(_text_:22 in 1422) [ClassicSimilarity], result of:
0.049478784 = score(doc=1422,freq=2.0), product of:
0.15985602 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045649286 = 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)
0.5 = coord(1/2)
- Date
- 22. 3.2003 19:27:23
-
Bornmann, L.; Mutz, R.: From P100 to P100' : a new citation-rank approach (2014)
0.01
0.008246465 = product of:
0.01649293 = sum of:
0.01649293 = product of:
0.049478784 = sum of:
0.049478784 = weight(_text_:22 in 1431) [ClassicSimilarity], result of:
0.049478784 = score(doc=1431,freq=2.0), product of:
0.15985602 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045649286 = queryNorm
0.30952093 = fieldWeight in 1431, 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=1431)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Date
- 22. 8.2014 17:05:18
-
Bhansali, D.; Desai, H.; Deulkar, K.: ¬A study of different ranking approaches for semantic search (2015)
0.01
0.00822272 = product of:
0.01644544 = sum of:
0.01644544 = product of:
0.024668159 = sum of:
0.015565722 = weight(_text_:h in 2696) [ClassicSimilarity], result of:
0.015565722 = score(doc=2696,freq=2.0), product of:
0.113413334 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045649286 = queryNorm
0.13724773 = fieldWeight in 2696, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0390625 = fieldNorm(doc=2696)
0.009102437 = weight(_text_:d in 2696) [ClassicSimilarity], result of:
0.009102437 = score(doc=2696,freq=2.0), product of:
0.0867278 = queryWeight, product of:
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.045649286 = queryNorm
0.104954086 = fieldWeight in 2696, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.899872 = idf(docFreq=17979, maxDocs=44218)
0.0390625 = fieldNorm(doc=2696)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
-
Ravana, S.D.; Rajagopal, P.; Balakrishnan, V.: Ranking retrieval systems using pseudo relevance judgments (2015)
0.01
0.0072889132 = product of:
0.0145778265 = sum of:
0.0145778265 = product of:
0.043733478 = sum of:
0.043733478 = weight(_text_:22 in 2591) [ClassicSimilarity], result of:
0.043733478 = score(doc=2591,freq=4.0), product of:
0.15985602 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045649286 = queryNorm
0.27358043 = fieldWeight in 2591, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=2591)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Date
- 20. 1.2015 18:30:22
18. 9.2018 18:22:56
-
Jacso, P.: Testing the calculation of a realistic h-index in Google Scholar, Scopus, and Web of Science for F. W. Lancaster (2008)
0.01
0.0063546794 = product of:
0.012709359 = sum of:
0.012709359 = product of:
0.038128074 = sum of:
0.038128074 = weight(_text_:h in 5586) [ClassicSimilarity], result of:
0.038128074 = score(doc=5586,freq=12.0), product of:
0.113413334 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045649286 = queryNorm
0.3361869 = fieldWeight in 5586, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0390625 = fieldNorm(doc=5586)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Abstract
- This paper focuses on the practical limitations in the content and software of the databases that are used to calculate the h-index for assessing the publishing productivity and impact of researchers. To celebrate F. W. Lancaster's biological age of seventy-five, and "scientific age" of forty-five, this paper discusses the related features of Google Scholar, Scopus, and Web of Science (WoS), and demonstrates in the latter how a much more realistic and fair h-index can be computed for F. W. Lancaster than the one produced automatically. Browsing and searching the cited reference index of the 1945-2007 edition of WoS, which in my estimate has over a hundred million "orphan references" that have no counterpart master records to be attached to, and "stray references" that cite papers which do have master records but cannot be identified by the matching algorithm because of errors of omission and commission in the references of the citing works, can bring up hundreds of additional cited references given to works of an accomplished author but are ignored in the automatic process of calculating the h-index. The partially manual process doubled the h-index value for F. W. Lancaster from 13 to 26, which is a much more realistic value for an information scientist and professor of his stature.
- Object
- h-index
-
Joss, M.W.; Wszola, S.: ¬The engines that can : text search and retrieval software, their strategies, and vendors (1996)
0.01
0.006184848 = product of:
0.012369696 = sum of:
0.012369696 = product of:
0.03710909 = sum of:
0.03710909 = weight(_text_:22 in 5123) [ClassicSimilarity], result of:
0.03710909 = score(doc=5123,freq=2.0), product of:
0.15985602 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045649286 = 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)
0.5 = coord(1/2)
- Date
- 12. 9.1996 13:56:22
-
Kelledy, F.; Smeaton, A.F.: Signature files and beyond (1996)
0.01
0.006184848 = product of:
0.012369696 = sum of:
0.012369696 = product of:
0.03710909 = sum of:
0.03710909 = weight(_text_:22 in 6973) [ClassicSimilarity], result of:
0.03710909 = score(doc=6973,freq=2.0), product of:
0.15985602 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045649286 = 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)
0.5 = 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
